TThe Traveling Tradesman
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Pipefitter & Steamfitter

Only four states issue a pipefitter license as its own thing: Massachusetts, Minnesota, Rhode Island, and Michigan. Everywhere else you're licensed as a plumber or a mechanical contractor, and the boundary between "plumbing" and "pipefitting" is drawn by the state, not by you. Massachusetts draws it at 700,000 BTU — above that heating threshold you're a pipefitter, below it you're not. The trap worth knowing before you move: your state's electrician reciprocity has nothing to do with this trade, because a different board runs it.

Where can I take my pipefitter & steamfitter license?

Pick the state you're licensed in. You'll get the states that will consider that license — which is not the same as a free transfer.

FAQ

Does my pipefitting experience count if I move?

Sometimes — but usually as exam eligibility, not an exam waiver, and that distinction matters. Rhode Island spells it out in regulation: an out-of-state Class I journeyperson license lets you be tested for the Rhode Island license. Minnesota credits high-pressure pipefitting work done outside the state toward its four-year requirement, then still makes you sit the exam. That's a genuine benefit — it can save you years — but it isn't reciprocity, and anyone telling you your license transfers is wrong. Where actual exam waivers exist they're narrow: Mississippi's board says Tennessee is the only state whose agreement covers mechanical and plumbing trades at all.

Pipefitter & Steamfitter rules in every state

Researched 2026-07-21 to 2026-07-24

One entry per state, in alphabetical order. Each one covers who licenses the trade there, what it takes to qualify, and whether that state accepts a license earned somewhere else.

What the colors mean
  • Reciprocity accepts some out-of-state licenses
  • No reciprocity licensed here, but no out-of-state license is accepted
  • Nothing to reciprocate no state license exists here
  • Not established we could not verify this state's position — treat it as an open question, not a no
  • secondarydrawn from consistent secondary sources, not confirmed on the agency's own page

Alabama

State license
Issuing agency: Alabama Plumbers and Gas Fitters Examining Board - pipefitters licensed through the plumbing/gas fitting credential documented in the AL plumber entry; no standalone pipefitter license.

Board certification required to contract or engage in plumbing/gas fitting, with no dollar threshold. Same board and structure documented for Alabama plumbing.

No reciprocitySecondary sources — not independently confirmed by the agency

Alabama licenses pipefitters through the Plumbers and Gas Fitters Examining Board - the same credential documented for Alabama plumbing, which has no reciprocity agreements with any state.

Why, and what applies instead: This dataset's Alabama plumber record confirms, from board-sourced information: 'Alabama has no reciprocity agreements for this license.' Since pipefitting runs through the same Plumbers and Gas Fitters Examining Board, that finding applies.

See all trades in Alabama

Alaska

State license
Issuing agency: Alaska Dept. Of Labor and Workforce Development - pipefitters need a plumber's license (Certificate of Fitness system documented in the AK plumber entry); no standalone pipefitter credential.

Same Mechanical Inspection Section Certificate of Fitness structure documented for Alaska plumbing.

No reciprocitySecondary sources — not independently confirmed by the agency

Alaska licenses pipefitters through its plumber Certificate of Fitness. No named-state reciprocity was confirmed, though a Provisional license offers a temporary bridge for out-of-state license holders while a full application processes.

Why, and what applies instead: This dataset's Alaska plumber record found a Provisional license option (temporary bridge for any valid out-of-state license holder, $150) but no confirmed named-state reciprocity for plumbing. Separately, Alaska'S DCCED construction contractor licenses have explicitly no reciprocity (confirmed in the AK roofer record).

See all trades in Alaska

Arizona

State license
Issuing agency: Arizona Registrar of Contractors (ROC) - pipefitters need an ROC contractor's license; the applicable classification depends on scope (plumbing C-37, HVAC C-39, or a related mechanical specialty). Same business-license model documented for Arizona'S other trades.

Same az ROC structure: roughly 4 years qualifying experience, trade exam, Statutes & Rules Exam (SRE), bonding and insurance. Specialty trades require licensure regardless of project size.

No reciprocitySecondary sources — not independently confirmed by the agency

Arizona has no formal pipefitter reciprocity with any state - consistent with every Arizona trade. A case-by-case Out-of-State Waiver Request is the only alternative, and Arizona's Statutes & Rules exam is never waived.

Why, and what applies instead: This dataset's Arizona records confirm, from the Registrar'S own page, that Arizona has no formal bilateral reciprocity with any state for any trade. Two alternatives exist: NASCLA exam substitution (confirmed for electrical and B/KB building classifications, not confirmed for plumbing/HVAC/mechanical) and a case-by-case Out-of-State Waiver Request. The SRE is never waived.

See all trades in Arizona

Arkansas

State license
Issuing agency: Dual requirement confirmed: an Arkansas pipefitter needs both a plumbing contractor's license from the Arkansas Contractors Licensing Board and a license from the Arkansas Department of Health - an unusual two-agency structure.

Two separate credentials required. The Arkansas Department of Health administers plumbing/gas licensing (noted in the AR carpenter entry as licensing plumbers with 6 hours annual CE), while the Contractors Licensing Board handles the contractor side.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Arkansas requires pipefitters to hold both a Contractors Licensing Board credential and an Arkansas Department of Health license. Reciprocity for this pathway was not confirmed - do not assume Arkansas' extensive electrical reciprocity applies, as that is a separate board.

What applies instead: Reciprocity for the Arkansas pipefitting pathway was not confirmed in this research pass. This dataset's Arkansas plumber record likewise left the plumbing reciprocity list unconfirmed (Arkansas' own reciprocal-application form confirms a general process exists for 'Plumbing, Electrical, HVACR or other classifications' without naming states). Do not assume the well-documented Arkansas electrical reciprocity list (17 states) extends here - it is administered by a different board.

Note: Needs a dedicated follow-up with both the Arkansas Contractors Licensing Board and the Department of Health.

See all trades in Arkansas

California

State license
Issuing agency: California CSLB - no standalone pipefitter license. Pipefitting falls under existing CSLB classifications depending on work type: C-36 Plumbing, C-20 HVAC, or C-4 Boiler/Hot-Water Heating/Steam Fitting. All three are already documented (C-36 and C-20 under plumber/hvac records).

No separate pipefitter credential. Which CSLB classification applies depends on the specific work: steam/process piping generally falls under C-4 (Boiler, Hot Water Heating and Steam Fitting) or C-36; HVAC-related piping under C-20. Standard CSLB requirements apply: 4 years journeyman experience, trade + law/business exams, $25,000 bond.

Reciprocity existsSecondary sources — not independently confirmed by the agency

California has no standalone pipefitter license - the work falls under existing CSLB classifications (C-36 plumbing, C-20 HVAC, or C-4 boiler/steam fitting). CSLB's reciprocity with Arizona, Louisiana, Mississippi, Nevada, and North Carolina applies where the specific classification qualifies.

What's actually required: Because pipefitting runs through standard CSLB classifications, the CSLB reciprocity program already documented for California's plumber and HVAC records applies here - subject to the classification appearing on the Reciprocal Classifications List for that state pair.

States accepted from
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Note: Which CSLB classification covers a given pipefitting scope wasn't independently verified against CSLB's classification descriptions - confirm with CSLB for a specific scope of work.

See all trades in California

Colorado

State license
Issuing agency: Colorado DORA - pipefitters licensed through DORA, which per this dataset's Colorado records licenses only electrical and plumbing at the state level (HVAC, general contracting, and roofing are all local-only in Colorado). Pipefitting would fall under the State Plumbing Board.

Same DORA State Plumbing Board structure documented for Colorado plumbing: no apprentice license (registration only), Journeyworker requires apprenticeship completion + exam, Master requires an additional year + exam.

No reciprocitySecondary sources — not independently confirmed by the agency

Colorado licenses pipefitting through DORA's plumbing framework, which has no formal reciprocity agreements - just case-by-case endorsement review for substantial equivalency. Denver runs its own separate system.

Why, and what applies instead: This dataset's Colorado plumber record confirms Colorado has no formal named-state reciprocity for plumbing - DORA instead runs a case-by-case endorsement review for substantial equivalency (exam basis, code edition, training hours). Denver operates its own separate licensing authority outside the state framework.

See all trades in Colorado

Connecticut

State license
Issuing agency: Connecticut Dept. Of Consumer Protection - Plumbing & Piping Contractor's License. Connecticut'S DCP explicitly uses a 'Plumbing and Piping' license title (P-1/P-2 classifications), making piping work a named part of the credential documented in the CT plumber entry.

Same DCP individual-licensing structure documented for Connecticut's other trades: apprentice registration with ct DOL, then journeyperson and contractor levels via experience + exam.

No reciprocityCross-confirmed

Connecticut licenses pipefitting through its Plumbing & Piping Contractor license. Connecticut has no reciprocal agreements with any jurisdiction - its own licensing department says so explicitly.

Why, and what applies instead: Connecticut's own official DCP page, cited in the CT electrician entry, states verbatim: 'Connecticut does not have reciprocal agreements with any other jurisdiction.' A separate source confirms DCP 'Generally does not offer reciprocity for state-licensed building trades.' This applies to the Plumbing & Piping license.

See all trades in Connecticut

Delaware

State license
Issuing agency: Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners (Division of Professional Regulation) - pipefitting falls under plumbing/HVACR licensing. Delaware notably has no state general contractor license at all (documented 's DE carpenter and roofer records) - only trade boards and business registration.

Division of Professional Regulation licensing, plus Construction Contractors Certificate registration with the Dept. Of Labor and a Division of Revenue business license.

Reciprocity existsCross-confirmed

Delaware's plumbing/pipefitting reciprocity with Maryland is cross-confirmed from Maryland'S side (Master level). Delaware generally handles reciprocity as a case-by-case 'substantially similar' review rather than a fixed state list.

What's actually required: The Maryland relationship is cross-confirmed from Maryland's own official page. The DE electrician entry confirms Delaware'S general approach via its administrative code: reciprocity is a case-by-case 'substantially similar' review rather than a fixed named-state list. Delaware's complete outbound plumbing list wasn'T independently verified.

States accepted from
MD (cross-confirmed - Maryland's own official reciprocity page names Delaware as its sole interstate plumbing reciprocity partner at the Master level)
See all trades in Delaware

Florida

State license
Issuing agency: Florida DBPR - Construction Industry Licensing Board. No standalone pipefitter license; pipefitting falls under the Plumbing Contractor or Mechanical Contractor classifications already documented.

Same CILB structure documented for Florida plumbing/HVAC: certified (statewide) or registered (local), trade + business & finance exams, 4 years experience, financial responsibility, insurance.

No reciprocityCross-confirmed

Florida has no standalone pipefitter license - the work falls under plumbing or mechanical contractor licensing, neither of which has formal reciprocity with any state (only case-by-case endorsement), per DBPR's own reciprocity form already documented.

Why, and what applies instead: This dataset's Florida plumber and HVAC records both confirm (from DBPR'S own reciprocity form CILB 32) that formal reciprocity covers only General/Building/Residential classifications - not plumbing or mechanical. Pipefitting, running through those same classifications, therefore has no formal reciprocity either; case-by-case endorsement (form CILB 10) is the only pathway.

See all trades in Florida

Georgia

State license
Issuing agency: Georgia State Construction Industry Licensing Board - no standalone pipefitter license. Pipefitting falls under the Conditioned Air Contractor or Master/Journeyman Plumber divisions already documented, depending on the work.

Same divisions documented for Georgia plumbing and HVAC: board application, PSI exam, continuing education.

No reciprocitySecondary sources — not independently confirmed by the agency

Georgia has no standalone pipefitter license - the work falls under plumbing or conditioned-air licensing. Georgia's plumbing licensing has explicitly no reciprocity with any state; the conditioned-air side has narrow reciprocity with South Carolina and Texas. Confirm which classification applies to your scope.

Why, and what applies instead: Georgia's own Secretary of State FAQ, already cited in the GA plumber entry, states: 'Georgia does not have reciprocity with any other states for Master or Journeyman Plumbers.' If the work instead falls under Conditioned Air, that record documents narrow reciprocity with South Carolina and Texas. Given the plumbing side is an explicit no and the applicable classification for pipefitting wasn'T confirmed, the answer here is recorded as no.

Note: Which Georgia classification governs pipefitting specifically wasn't confirmed - the answer determines whether any reciprocity applies.

See all trades in Georgia

Hawaii

State license
Issuing agency: Hawaii Contractors License Board (CLB), DCCA - pipefitting falls under the C-37 Plumbing specialty classification or a related mechanical specialty among the CLB's 42 defined C classifications. Same board documented for Hawaii'S other trades.

Same CLB structure documented for Hawaii: 4 years supervisory experience within the last 10 years, trade exam + Business & Law exam (75%+ each), general liability insurance, case-by-case bond. $1,000 threshold applies to all contracting work.

No reciprocityCross-confirmed

Hawaii has no pipefitting reciprocity with any state - its licensing agency states it plainly, and applies it across all trade boards. Out-of-state experience may count toward Hawaii's hour requirements, but Hawaii'S exams are always required.

Why, and what applies instead: This dataset's Hawaii records confirm - from an official government source quoting DCCA policy - that 'Hawaii does not have reciprocity agreements with other jurisdictions.' This is one of the most consistently-confirmed no-reciprocity findings in the dataset (5+ independent sources for electrical), and DCCA applies it across its licensing boards. Out-of-state experience may count toward Hawaii'S hour requirements, but the exam is always required.

See all trades in Hawaii

Idaho

State license
Issuing agency: Idaho DOPL - Plumbing Bureau. Pipefitting falls under Idaho's plumbing licensing (documented in the ID plumber entry); no standalone pipefitter credential. Idaho licenses electrical, plumbing, and HVAC statewide but not general contracting or roofing.

Same DOPL Plumbing Bureau structure: individual journeyman/master credentials plus a business Plumbing Contractor license requiring a designated master plumber.

Reciprocity existsCross-confirmed

Idaho's plumbing/pipefitting reciprocity is cross-confirmed with Washington and Oregon from those states' own official pages. Idaho's complete list wasn'T independently verified - and its extensive 13-state electrical reciprocity is a separate program that doesn't automatically extend here.

What's actually required: Both relationships are cross-confirmed from the other states' own official pages (Washington L&I and Oregon BCD). Idaho'S own complete outbound list for plumbing wasn't independently verified from DOPL'S materials - one source characterized Idaho's plumbing reciprocity as more informal and limited than its electrical program (13 states, well documented).

States accepted from
WA (cross-confirmed - Washington L&I's own page names Idaho as its sole plumbing reciprocity partner, journey-level)OR (cross-confirmed - Oregon BCD's own pages list Idaho among its two journeyman plumber reciprocity partners)
See all trades in Idaho

Illinois

No license — state or local

No license exists for this trade at any level — state or local — in this state.

Issuing agency: No pipefitter license in Illinois - Confirmed directly by Illinois workNet (a State of Illinois government career-information site), which states plainly: 'Pipefitters are not licensed.' Plumbers are licensed by IDPH or the City of Chicago (already documented for IL plumber), but pipefitting is not a separately licensed trade.

No state credential. Note that plumbing work IS licensed statewide by IDPH (documented separately), so the boundary between pipefitting and plumbing work matters for compliance.

No state license to reciprocateOfficial source

Illinois does not license pipefitters at all - confirmed by a State of Illinois government source. There is no reciprocity because there is no license. (Plumbing is separately licensed statewide by IDPH, with no reciprocity.)

What applies instead: No pipefitter license exists in Illinois, so no reciprocity framework applies. Illinois' separately-documented plumbing license has explicitly no reciprocity with any state.

See all trades in Illinois

Indiana

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license. Indiana licenses PLUMBING statewide through the Indiana Plumbing Commission (IPLA) - the only construction trade Indiana licenses at the state level, per this dataset's Indiana records - but pipefitting as such is not separately credentialed. Local licensing (Indianapolis, Fort Wayne/Allen County) may apply.

If the work constitutes plumbing, Indiana's statewide plumbing licensure applies (576 classroom hours + 6,400 OJT hours over 4 years, then exam, under IC 25-28.5). Otherwise local rules govern.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Indiana has no standalone pipefitter license - plumbing is the only construction trade Indiana licenses statewide. If your work falls under plumbing, note that Indiana's reciprocity statute promises more than it delivers: it requires mutual recognition that no state currently appears to meet.

What applies instead: No standalone pipefitter credential exists. If the work falls under Indiana's plumbing license, the IN plumber entry documents a genuine nuance: IC 25-28.5-1-19 technically allows reciprocity 'Without examination,' but gates it on the other state having substantially equal standards and extending the same privilege back to Indiana - and no state currently appears to satisfy that mutual-recognition condition in practice.

See all trades in Indiana

Iowa

State license
Issuing agency: Iowa DIAL - Plumbing and Mechanical Systems Board. Pipefitting falls under this board's mechanical/plumbing licensing (documented 'S ia plumber and HVAC records); contractors additionally register with DIAL under the broad Construction Contractor registration.

Iowa licenses plumbing and mechanical systems contractors at the state level (distinct from its general Construction Contractor registration, which is registration-only with a $2,000/year threshold and no exam). Out-of-state contractors must file a $25,000 bond - notably higher than the $5,000 in-state performance bond.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Iowa licenses pipefitting through its Plumbing and Mechanical Systems Board, whose reciprocity wasn't confirmed in this research. Iowa'S well-documented electrical reciprocity is a separate board's program and doesn'T apply here.

What applies instead: This dataset's Iowa plumber and HVAC records both left the Plumbing and Mechanical Systems Board'S reciprocity unconfirmed. Iowa's electrical reciprocity is well documented here (MN/NE/SD primary plus cross-class agreements with OK/TX/WI, from two official DIAL documents) but is administered by the separate Electrical Examining Board - it does not extend to plumbing or mechanical trades.

Note: Same open item flagged in this dataset's IA plumber and HVAC records - needs a dedicated check with the Plumbing and Mechanical Systems Board.

See all trades in Iowa

Kansas

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license - consistent with the local-only pattern documented for every Kansas trade EXCEPT roofing (which is uniquely registered statewide through the Attorney General's office). Wichita, Overland Park, Olathe, Topeka, and Kansas City KS each run their own contractor licensing.

Varies by municipality. Kansas sets no statewide competency standards for this trade.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Kansas has no statewide pipefitter license - it's entirely local, matching every Kansas trade except roofing (uniquely registered through the Attorney General). There is no state reciprocity because there is no state license.

What applies instead: No state license exists, so no state reciprocity framework applies. Note that as of October 2025, Kansas contractors were actively lobbying the legislature for a statewide electrician license specifically to enable interstate reciprocity (documented in the KS electrician entry) - confirming the absence of statewide trade licensing is a live policy issue in Kansas, not an oversight.

See all trades in Kansas

Kentucky

State license
Issuing agency: Kentucky Dept. Of Housing, Buildings and Construction (DHBC) - Plumbing Division. Pipefitting falls under Kentucky's plumbing licensing; DHBC licenses electrician, plumber, HVAC, boiler, and fire sprinkler statewide but not general contracting or roofing.

Same DHBC Plumbing Division structure documented in the KY plumber entry: journeyman then master plumber via experience + exam.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Kentucky licenses pipefitting through DHBC's Plumbing Division, whose reciprocity list wasn'T confirmed. Do not assume it matches Kentucky's electrical reciprocity - that'S a different division with separately-documented agreements.

What applies instead: This dataset's Kentucky plumber record explicitly left the plumbing reciprocity list unconfirmed, with a specific warning not to assume it mirrors the electrical list. Kentucky'S electrical reciprocity is confirmed from DHBC's own application checklist (Ohio and Louisiana directly confirmed, each with different requirements; TN/WV/NC/VA secondary-sourced), but that is the Electrical Division'S program.

Note: Same open item flagged in this dataset's KY plumber record - needs a dedicated check with DHBC's Plumbing Division.

See all trades in Kentucky

Louisiana

State license
Issuing agency: Louisiana - split authority: the State Plumbing Board of Louisiana licenses individual plumbers (journeyman/master), while LSLBC handles the Mechanical Work contractor classification (covering HVAC, refrigeration, gas piping, and process piping - the classification most directly covering industrial pipefitting).

LSLBC Mechanical Contractor license required for mechanical/process piping work over $10,000. A mechanical contractor performing plumbing work over $10,000 must separately hold or employ a Master Plumber. Commercial licensing threshold is $50,000 generally, but electrical/mechanical/plumbing subcontractors trigger at $10,000.

Reciprocity existsCross-confirmed

Louisiana licenses industrial pipefitting under LSLBC's Mechanical Work classification (which explicitly covers process piping), with plumbing work over $10,000 requiring a separate Master Plumber. Arkansas journeyman plumbers get an exam waiver. Louisiana'S mechanical license is recognized by Alabama and Ohio, confirmed from those states' own boards.

What's actually required: This dataset's Louisiana records document: Arkansas journeyman plumbers can waive the Louisiana exam; the Mississippi relationship is genuinely unresolved (MSBOC'S own page states no formal LA-MS agreement exists anymore, though MSBOC still honors Louisiana exam scores - which resolves an apparent contradiction found earlier); and Louisiana's Mechanical classification is accepted BY Alabama and Ohio, confirmed from those states' own boards. Louisiana's own complete inbound acceptance list for mechanical work wasn'T independently verified from LSLBC.

States accepted from
AR (journeyman plumber exam waiver, confirmed 's LA plumber record)
See all trades in Louisiana

Maine

State license
Issuing agency: Maine Plumbers' Examining Board, Office of Professional and Occupational Regulation (OPOR) - pipefitting falls under plumbing licensing. Maine licenses only electricians, plumbers, and fuel-burning technicians at the state level; general contracting and most other trades have no state license (confirmed on Maine'S own materials 's me HVAC and carpenter records).

Same OPOR structure documented for Maine plumbing: individual journeyman/master credentials via experience + exam, with no separate contractor business license required.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Maine licenses pipefitting through its Plumbers' Examining Board, whose reciprocity wasn'T confirmed. Maine's precisely-documented electrical reciprocity (6 states journeyman, 2 master) is a separate board'S program and doesn't apply here.

What applies instead: This dataset's Maine plumber record left the Plumbers' Examining Board reciprocity list unconfirmed. Maine's electrical reciprocity is precisely documented here from Maine'S own two official license-level pages (Journeyman: NH, VT, ND, ID, OR, WY; Master: NH and VT only) - but that is the Electricians' Examining Board'S program and does not extend to plumbing or pipefitting.

Note: Same open item flagged in this dataset's ME plumber record - needs a dedicated check with the Plumbers' Examining Board.

See all trades in Maine

Maryland

State license
Issuing agency: Maryland State Board of Plumbing - pipefitting falls under the Master Plumber/Gas Fitter credential documented in the MD plumber entry. Note Maryland's three-authority split: the state board, plus Baltimore County and the WSSC service area, which run their own separate plumbing systems and codes.

Same Maryland State Board of Plumbing structure: apprentice/journeyman/master ladder, with Baltimore County and WSSC operating independently.

Reciprocity existsCross-confirmed

Maryland's only true interstate plumbing reciprocity - which covers pipefitting - is with Delaware, at the Master level only, confirmed on Maryland'S own official page. Maryland also recognizes Baltimore County and WSSC licenses, but those are internal Maryland jurisdictions, not other states.

What's actually required: Confirmed from Maryland's own official page (labor.Maryland.gov/license/pl/plrecip.shtml), documented in the MD plumber entry: the only genuine INTERSTATE plumbing reciprocity is with Delaware, Master level only. Maryland also recognizes WSSC and Baltimore County licenses, but those are Maryland'S own internal jurisdictions - not other states, and the site should not present them as such.

States accepted from
DE (CONFIRMED from Maryland's own official reciprocity page as the ONLY true interstate plumbing reciprocity, Master level only)
See all trades in Maryland

Massachusetts

State license
Issuing agency: Massachusetts Dept. Of Public Safety - genuinely separate Pipefitter License (master, journeyman, apprentice) under M.G.L. C.146 s.85. One of only a handful of states with a standalone pipefitter credential, distinct from the plumbing license (Board of State Examiners of Plumbers and Gas Fitters) already documented.

Confirmed from the Dept. Of Public Safety's own licensing document: 'No person shall engage in the business of a master pipefitter, or work as a journeyman or apprentice pipefitter unless they are lawfully licensed under M.G.L. 146 s.85.' Scope is statutorily defined: piping for heating systems rated OVER 700,000 BTU, steam conveyance and associated pumping equipment, vacuum and pneumatic systems, oil and petroleum products, ice-making machinery, and air conditioning equipment - the >700,000 BTU threshold is the key boundary separating pipefitting from plumbing/gas fitting work.

No reciprocityOfficial source

Massachusetts has a genuinely separate Pipefitter License (covering heating systems over 700,000 BTU, steam, vacuum/pneumatic, and petroleum piping) issued by the Dept. Of Public Safety - distinct from the plumbing license. No pipefitter reciprocity program was found; Massachusetts boards generally do not offer reciprocity.

Why, and what applies instead: Massachusetts' Division of Occupational Licensure boards consistently apply narrow or no reciprocity, and this dataset'S Massachusetts records already confirm: the CSL/contractor side states outright that Massachusetts 'does not recognize out of state contractor licenses,' and the plumbing board has no named-state reciprocity (case-by-case substantial-equivalency review only). No pipefitter-specific reciprocity program was found.

Note: The absence of pipefitter-specific reciprocity is inferred from Massachusetts' consistent board-wide pattern rather than a pipefitter-specific denial - confirm with the Dept. of Public Safety.

See all trades in Massachusetts

Michigan

State license
Issuing agency: Michigan LARA, Bureau of Construction Codes - Plumbing Division issues APPRENTICE, JOURNEYMAN, and master pipefitter licenses as a genuinely distinct credential (not merely folded into the plumbing license). One of only a handful of states with a standalone pipefitter license.

Apprentice/journeyman/master ladder administered by the same LARA Plumbing Division documented for Michigan plumbing.

No reciprocityCross-confirmed

Michigan issues a genuinely separate pipefitter license (apprentice/journeyman/master) through LARA's Plumbing Division - and has no reciprocity with any state, consistent with every other Michigan trade documented.

Why, and what applies instead: Michigan's own LARA FAQ, already cited 'S Michigan electrician and carpenter records, states flatly: 'Michigan does not hold reciprocal agreements with any other State.' This applies across all LARA/BCC trades, including pipefitting.

See all trades in Michigan

Minnesota

State license
Issuing agency: Minnesota DLI - genuinely separate High Pressure Pipefitter licensing: Journeyworker, Master, and Contracting High Pressure Pipefitter, under Minn. Stat. 326B.90-925 and Minn. Rules 5230. Distinct from the Minnesota plumbing license already documented. NOTE: one secondary source (Tulsa Welding School) incorrectly states Minnesota pipefitters need a plumbing license - Minnesota's own DLI pages confirm a separate high-pressure pipefitting credential, so the official source governs.

Confirmed from dli.mn.gov: Journeyworker HPP requires age 20+, ability to read blueprints/specs for high pressure piping, and 4 years as a registered unlicensed individual, pipefitter apprentice, OR work in high pressure pipefitting OUTSIDE Minnesota; then a $50 exam (70% to pass) and $48 license fee, valid 2 years. Master HPP requires age 21+ and 5 years in the trade. Unlicensed individuals may work only if registered with DLI or in an approved apprenticeship, under direct supervision, employed by the same licensed high pressure piping contractor (max 2 unlicensed per licensed pipefitter). A Contracting HPP license entitles the holder to work as a journeyman, but not vice versa (Minn. R. 5230.0120).

No reciprocityOfficial source

Minnesota has a genuinely separate High Pressure Pipefitter license (journeyworker, master, and contracting levels). There is no reciprocity - but Minnesota does credit out-of-state high-pressure pipefitting experience toward the 4-year requirement to sit for its exam, which is a real benefit short of reciprocity.

Why, and what applies instead: No named-state reciprocity program was found for Minnesota's high pressure pipefitter licenses. Notable: Minnesota'S own DLI requirements explicitly credit work 'in the trade of high pressure pipefitting outside of Minnesota' toward the 4-year experience requirement - that's recognition of out-of-state Experience toward exam eligibility, which is meaningfully different from reciprocity (the Minnesota exam is still required). This dataset'S Minnesota plumber record separately confirms narrow reciprocity (ND, SD) for plumbing, which does not extend to pipefitting.

See all trades in Minnesota

Mississippi

State license — commercial work only

This license covers commercial work only. Residential work is licensed separately, at the local level, if at all.

Issuing agency: Mississippi State Board of Contractors (MSBOC) - commercial construction contractor's Certificate of Responsibility with a special MECHANICAL certification. No standalone pipefitter license; same MSBOC framework documented for Mississippi'S other trades (individual trade licensing is municipal, MSBOC handles the commercial contractor level).

MSBOC Certificate of Responsibility with mechanical certification. Commercial threshold $50,000; mechanical/electrical/plumbing work triggers commercial licensing at just $10,000 per this dataset's MS records.

Reciprocity existsOfficial source

Mississippi licenses pipefitting under an MSBOC mechanical certification. Tennessee is the only state whose reciprocity with Mississippi covers mechanical trades - MSBOC's own page says so explicitly, and every other partner state'S waiver excludes mechanical work. Mississippi's law and business exam is never waived.

What's actually required: Confirmed from MSBOC's own official reciprocity page, already documented for MS plumber: Tennessee is explicitly called out as the only state whose agreement with Mississippi extends to mechanical and plumbing trades. Every other MSBOC reciprocal partner (Alabama, Florida, Georgia, North Carolina, etc.) has its waiver explicitly excluding mechanical and plumbing. The Mississippi Law and Business Management exam is never waived for anyone.

States accepted from
TN (CONFIRMED from MSBOC's own reciprocity page as 'the only state that waives Mechanical and Plumbing' - directly on point for pipefitting, which falls under the mechanical certification)
See all trades in Mississippi

Missouri

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license - Missouri provides no statewide contractor licenses for this trade; local ordinances apply. Consistent with the local-only pattern documented for Missouri plumbing, HVAC, and carpentry (Missouri's only state-level trade credential is the optional statewide electrical license).

Varies by municipality (Kansas City Certificates of Qualification, St. Louis License Collector, etc.).

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Missouri has no statewide pipefitter license - it's regulated locally, matching Missouri'S plumbing and HVAC trades. There is no state reciprocity because there is no state license.

What applies instead: No state license exists, so no state reciprocity framework applies - matching Missouri's other non-electrical trades.

See all trades in Missouri

Montana

State license
Issuing agency: Montana Board of Plumbers (Dept. Of Labor and Industry) - pipefitters licensed through the plumbing credential documented in the MT plumber entry; no standalone pipefitter license.

Same Montana Board of Plumbers structure: apprentice/journeyman/master ladder with a written exam required before license issuance.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Montana licenses pipefitting through its Board of Plumbers. That board's reciprocity list wasn'T confirmed in this research - and Montana's well-documented 16-state electrical reciprocity does not automatically apply, as it'S a different board.

What applies instead: This dataset's Montana plumber record left the plumbing reciprocity list unconfirmed pending a dedicated check. Montana'S electrical reciprocity (16 states, Residential/Journeyman only, explicitly excluding Master) is well documented here but is administered by the separate State Electrical Board - do not assume it extends to plumbing or pipefitting.

Note: Montana Board of Plumbers reciprocity needs a dedicated follow-up - the same open item already flagged in this dataset's MT plumber record.

See all trades in Montana

Nebraska

No license — state or local

No license exists for this trade at any level — state or local — in this state.

Issuing agency: No specific pipefitter licensing or certification requirements in Nebraska - confirmed by the 50-state reference. Contractors must still register with the Nebraska Dept. Of Labor under the Contractor Registration Act (documented 's NE records), and counties over 100,000 population require local business licensing.

No state trade credential. NDOL contractor registration ($25/year, rising to $40 effective Aug. 1, 2026) verifies business identity and workers' comp - explicitly not a competency credential. Nebraska'S only statewide-licensed trade is electrical.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Nebraska has no pipefitter licensing requirements at the state level - only contractor registration (no exam) plus local licensing in larger counties. Electrical remains Nebraska's only statewide-licensed trade.

What applies instead: No exam-based state pipefitter credential exists, so there's nothing to reciprocate. Consistent with this dataset'S other Nebraska records.

See all trades in Nebraska

Nevada

State license
Issuing agency: Nevada State Contractors Board (NSCB) - pipefitting falls under the C-1 (Plumbing and Heating) classification documented in the NV plumber entry, or a related mechanical classification depending on scope. Business-level license; no individual journeyman/master state credential.

Same NSCB structure: experience + trade exam + Contractor Management Survey (Business & Law) exam + bond/insurance. $1,000 threshold under NRS 624.020.

Reciprocity existsCross-confirmed

Nevada offers licensure by endorsement for its Plumbing and Heating (C-1) classification - which covers pipefitting - from Arizona, California, Florida, and Tennessee. The trade exam may be waived; Nevada's Business & Law exam never is.

What's actually required: Confirmed in the NV plumber entry: states with 'substantially equivalent requirements' for the combined C-1 Plumbing and Heating classification are Arizona, California, Florida, and Tennessee. Nevada calls this 'licensure by endorsement' rather than reciprocity - the trade exam may be waived but the Business & Law (CMS) exam is required of everyone, and the endorsing state must complete a verification form. Typically requires 4-5+ years of active licensure with no disciplinary history.

States accepted from
AZCAFLTN
See all trades in Nevada

New Hampshire

State license
Issuing agency: New Hampshire OPLC - Mechanical Safety & Licensing Board (plumbing, gas fitting, fuel oil, and mechanical trades). Pipefitting falls under this board. NH's OPLC licenses electricians and plumbers but not general contractors or roofers (documented 'S nh records).

Experience + exam structure through OPLC, administered by a different board than the Electricians' Examining Board.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

New Hampshire licenses pipefitting through its Mechanical Safety & Licensing Board, whose specific reciprocity list wasn't confirmed (a general case-by-case process exists). New Hampshire'S extensively-documented electrical reciprocity is a separate board's program.

What applies instead: This dataset's New Hampshire plumber and HVAC records both left the Mechanical Safety & Licensing Board'S specific reciprocity list unconfirmed, noting only that a general case-by-case process exists ('New Hampshire may grant reciprocity if your state'S licensing standards align with its own'). New Hampshire'S electrical reciprocity is thoroughly documented here - full Journeyman+Master agreements with Maine, Massachusetts, and Vermont plus a Journeyman-only NERA list, confirmed from NH's own application PDF and triangulated against Maine'S and Massachusetts's own records - but that is a separate board.

Note: Same open item flagged in this dataset's NH plumber and HVAC records - needs a dedicated check with the Mechanical Safety & Licensing Board.

See all trades in New Hampshire

New Jersey

No license — state or local

No license exists for this trade at any level — state or local — in this state.

Issuing agency: No standalone pipefitter license. New Jersey's Division of Consumer Affairs licenses Master Plumbers and HVACR Contractors (both documented); pipefitting work generally falls under those credentials or the HIC registration depending on scope.

No separate pipefitter credential was identified. Applicable requirements depend on whether the work falls under plumbing (Master Plumber license) or HVACR (Master HVACR Contractor license), both already documented for New Jersey.

No reciprocitySecondary sources — not independently confirmed by the agency

New Jersey has no standalone pipefitter license - the work falls under Master Plumber or HVACR Contractor licensing. Neither has a confirmed named-state reciprocity program; both use conditional, case-by-case review.

Why, and what applies instead: Neither of the credentials pipefitting would fall under has usable named-state reciprocity: the NJ plumber entry found no formal reciprocal agreements (conditional case-by-case review only), and the nj HVAC record found reciprocity is conditional on the home state having comparable standards and reciprocating back, with no confirmed qualifying state list.

Note: Which New Jersey credential governs a given pipefitting scope wasn't confirmed - check with the Division of Consumer Affairs.

See all trades in New Jersey

New Mexico

State license
Issuing agency: New Mexico CID (Construction Industries Division) - pipefitting falls under the Mechanical Bureau's ME-98 Mechanical Contractor classification or a related journeyman certificate. Same CID structure documented for New Mexico'S other trades.

Same CID structure: journeyman certificate plus contractor (qualifying party) license, PSI trade exam + NM Business & Law exam (75% each), $10,000 bond. New Mexico has no dollar minimum - any paid construction work requires a CID license.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

New Mexico licenses pipefitting through CID's Mechanical Bureau. Reciprocity for mechanical trades wasn'T confirmed - and New Mexico's well-documented 10-state reciprocity applies specifically to journeyman ELECTRICIANS, not mechanical trades. New Mexico'S plumbing side has explicitly no reciprocity.

What applies instead: New Mexico's confirmed reciprocity (10 states, from rld.nm.gov'S own page) applies to the ER-1 Journeyman ELECTRICIAN certificate specifically. The NM plumber entry found plumbing has explicitly no reciprocity, and the nm HVAC record left mechanical reciprocity unconfirmed. Pipefitting, falling under the Mechanical Bureau, inherits that unconfirmed status - do not extend the electrician list here.

Note: Same open item flagged in this dataset's NM HVAC record - needs a dedicated check with CID's Mechanical Bureau.

See all trades in New Mexico

New York

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license - consistent with the local-only pattern documented for every New York trade. NYC and other municipalities regulate the trade locally; NYC's plumbing/fire-suppression credentials run through the Dept. Of Buildings.

Varies by municipality. No state credential exists.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

New York has no statewide pipefitter license - licensing is entirely local, matching the pattern documented for all New York trades. There is no state reciprocity because there is no state license.

What applies instead: No state license exists, so no state reciprocity framework applies - matching every other New York trade already recorded.

See all trades in New York

North Carolina

State license
Issuing agency: NC State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors - no standalone pipefitter license; pipefitting falls under the plumbing or heating classifications already documented.

Same board and structure documented for North Carolina plumbing and HVAC: classified licenses by scope, experience hours + exam, SBI background check.

No reciprocityCross-confirmed

North Carolina has no standalone pipefitter license - the work falls under the plumbing/heating board already documented, which has no reciprocity agreements with any state. A South Carolina exam waiver and a residency-based Neighbor State pathway are the only exceptions.

Why, and what applies instead: This dataset's NC plumber and HVAC records both confirm, from the board'S own site: 'There are no license reciprocity agreements with any other state.' A South Carolina technical-exam waiver and the Neighbor State License Recognition Act (GA, SC, TN, VA, WV, residency-based) are the only narrower pathways - neither is reciprocity.

See all trades in North Carolina

North Dakota

State license
Issuing agency: North Dakota State Plumbing Board - pipefitting falls under plumbing licensing; separately, the Secretary of State contractor license (confirmed in the ND roofer entry) applies to the business at $4,000+.

Two layers: individual plumbing credential from the State Plumbing Board, plus the Secretary of State contractor license (NDCC ch. 43-07) for any construction work over $4,000, which is insurance/registration-based with license classes A-D by project value.

Reciprocity existsCross-confirmed

North Dakota licenses pipefitting through its State Plumbing Board, with a reciprocal relationship with Minnesota cross-confirmed from Minnesota's side. North Dakota'S complete plumbing list wasn't verified, and its extensive electrical reciprocity is a separate board'S program.

What's actually required: The Minnesota relationship is cross-confirmed from Minnesota's own official DLI page. North Dakota'S own complete outbound plumbing list wasn't independently verified - the same open item already flagged in the ND plumber entry. North Dakota'S well-documented electrical reciprocity (Master with MN/SD, Journeyman with 10 states) is administered by the separate State Electrical Board.

States accepted from
MN (cross-confirmed - Minnesota DLI's own official page confirms its plumbing reciprocity is limited to North Dakota and South Dakota)
See all trades in North Dakota

Ohio

State license — commercial work only

This license covers commercial work only. Residential work is licensed separately, at the local level, if at all.

Issuing agency: Ohio OCILB - no standalone pipefitter license. Pipefitting falls under the existing OCILB commercial trade licenses already documented (Plumbing, HVAC, Hydronics, Refrigeration); residential work is local.

Same OCILB structure documented for Ohio's other trades: 5 years as a tradesperson in the trade + trade and business/law exams + $500,000 liability insurance + background check.

Reciprocity existsSecondary sources — not independently confirmed by the agency

Ohio has no standalone pipefitter license - the work runs through OCILB's commercial plumbing, HVAC, hydronics, or refrigeration classifications, carrying the same reciprocity already documented for those trades (South Carolina, West Virginia, plus a Tennessee waiver arrangement).

What's actually required: Because pipefitting runs through OCILB's plumbing/HVAC/hydronics classifications, the reciprocity already confirmed 'S Ohio plumber and HVAC records applies - exam-earned licenses only, with Ohio's business & law exam always still required. Which specific classification covers a given pipefitting scope wasn'T independently verified.

States accepted from
SC (via the OCILB plumbing/HVAC classifications this work falls under)WV (same basis)TN (trade-exam waiver arrangement)

Note: Which OCILB classification covers a given pipefitting scope needs confirmation with the board.

See all trades in Ohio

Oklahoma

State license
Issuing agency: Oklahoma Construction Industries Board (CIB) - pipefitting falls under CIB's plumbing or mechanical licensing. Oklahoma has no state general contractor license (confirmed in the OK carpenter entry), but CIB licenses electricians, plumbers, HVAC/mechanical technicians, and roofing contractors statewide.

CIB licensing required regardless of project value for electrical, plumbing, and mechanical work (per this dataset's OK records). Apprentice/journeyman/contractor ladder.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Oklahoma licenses pipefitting through CIB's plumbing/mechanical programs, whose reciprocity lists weren'T confirmed. Oklahoma's documented 10-state electrical reciprocity - which uniquely requires true bilateral mutual recognition - is a separate program.

What applies instead: This dataset's Oklahoma plumber and HVAC records both left their specific state lists unconfirmed. Oklahoma'S electrical reciprocity is well documented here - 10 states, with the Oklahoma Administrative Code (158:40-7-5) revealing a true BILATERAL mutual-recognition requirement (the other state must also recognize Oklahoma licenses back) - but that is the electrical program specifically.

Note: Same open item flagged in this dataset's OK plumber and HVAC records - needs a dedicated check with the CIB.

See all trades in Oklahoma

Oregon

State license
Issuing agency: Oregon Building Codes Division (BCD) - Journeyman Plumber license covers pipefitting; the contracting business separately holds a CCB license. Same dual BCD/CCB structure documented for Oregon's other trades.

Same BCD structure documented for Oregon plumbing. Separately, the CCB business license requires 16-hour pre-license training + exam + bond + insurance, with no dollar-value exemption beyond casual jobs under $1,000.

Reciprocity existsCross-confirmed

Oregon's plumbing reciprocity - which covers pipefitting - is limited to Idaho and Montana, confirmed on Oregon'S own BCD pages. Note the split: the individual license has that narrow reciprocity, but Oregon's CCB business license has none at all.

What's actually required: Confirmed from Oregon BCD's own reciprocal licensing pages, documented in the OR plumber entry: Journeyman Plumber reciprocity is limited to Idaho and Montana. The license must be equivalent or higher, current, active, and violation-free for 3 years. Separately, Oregon'S CCB (the business license) has no reciprocity with any state - confirmed explicitly 's OR carpenter and roofer records.

States accepted from
IDMT
See all trades in Oregon

Pennsylvania

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license - matching the local-only/HICPA-registration pattern documented for every Pennsylvania trade. Philadelphia and Pittsburgh regulate locally.

Varies by municipality; statewide HICPA registration (AG's office) applies to residential home-improvement work but is not a trade license.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Pennsylvania has no statewide pipefitter license - it's municipal, matching the pattern documented for all Pennsylvania trades. There is no state reciprocity because there is no state license.

What applies instead: No exam-based state license exists, consistent with every Pennsylvania trade already documented.

See all trades in Pennsylvania

Rhode Island

State license
Issuing agency: Rhode Island Dept. Of Labor and Training - genuinely separate pipefitter licensing through the Board of Pipefitters, Refrigeration Technicians, Fire Protection Sprinkler Fitters, Sheet Metal Workers and Oil Heat Contractors (260-RICR-30-15-2). Classes: Pipefitter Journeyperson I (unlimited) and II, Pipefitter Master I and II. Distinct from the CRLB contractor registration documented in the RI carpenter/roofer entrys.

Confirmed from Rhode Island's own regulations (rules.sos.ri.gov): Pipefitter Journeyperson Class I (unlimited) requires 10,000 hours OJT + 144 hours/year trade schooling as a registered RI-approved apprentice; 2 years of accredited schooling may be deducted from the apprenticeship. Class II licenses are limited to heating installations (commercial up to 500,000 BTU; process piping not allowed). Master Class I/II authorize permits at corresponding BTU limits.

No reciprocityOfficial source

Rhode Island has genuinely separate pipefitter licensing (Journeyperson and Master, Classes I and II). There is no exam waiver - but an out-of-state Pipefitter Journeyperson Class I license makes you eligible to SIT for Rhode Island's exam, and 5 years of documented journeyperson experience works if your state has no equivalent license.

Why, and what applies instead: Confirmed from Rhode Island's own regulation text, and it draws a precise distinction worth knowing: 'An out of state Pipefitter Journeyperson Class I license will allow the applicant to be TESTED for the Pipefitter Journeyperson Class I Rhode Island license' - out-of-state licensure grants exam eligibility, not an exam waiver. If a state doesn'T offer an equivalent Class I license, a notarized resume showing 5 years' journeyperson experience serves the same eligibility purpose. This is consistent with this dataset'S other Rhode Island records, where the CRLB states outright there is no reciprocity for contractor registration.

See all trades in Rhode Island

South Carolina

State license
Issuing agency: South Carolina Contractors' Licensing Board - Mechanical Contractor'S license. Pipefitting falls under the mechanical classification within the fragmented sc LLR structure documented across these states (SCMCB commercial / SCRBC residential).

Same sc LLR structure documented for South Carolina's other trades: technical exam per classification plus the SC Business Management & Law exam (never waived), financial statement determining the license group and bid limit.

Reciprocity existsSecondary sources — not independently confirmed by the agency

South Carolina licenses pipefitting under a Mechanical Contractor's license. A reciprocal relationship with North Carolina is cross-confirmed; South Carolina reports agreements with 9 states overall, but whether they cover the mechanical classification specifically wasn'T confirmed. The SC business and law exam is never waived.

What's actually required: South Carolina reports reciprocity agreements with 9 states generally (per this dataset's SC records), with trade-exam waivers confirmed for Alabama and Georgia on other classifications. The North Carolina relationship is cross-confirmed from NC'S own side. Whether the full 9-state list extends to the MECHANICAL classification specifically wasn't confirmed - consistent with the caution applied to all South Carolina records given its multi-board structure and the MASC-to-CAGC certification transition effective January 2026.

States accepted from
NC (cross-confirmed - this dataset's NC plumbing/HVAC record documents a Technical Examination Waiver Agreement with South Carolina, and NC's GC board lists SC among its 7 exam-waiver partners)

Note: Confirm whether SC's 9-state reciprocity list covers the Mechanical classification specifically.

See all trades in South Carolina

South Dakota

State license
Issuing agency: South Dakota State Plumbing Commission - issues apprentice, journeyman plumber, and plumbing contractor licenses; pipefitting falls under this credential. No standalone pipefitter license.

Same State Plumbing Commission structure referenced in the SD plumber entry.

Reciprocity existsCross-confirmed

South Dakota licenses pipefitting through its State Plumbing Commission. A reciprocal relationship with Minnesota is cross-confirmed from Minnesota's side; South Dakota'S own complete list wasn't verified. Its 15-state electrical reciprocity is a separate program and doesn'T apply here.

What's actually required: The Minnesota-South Dakota plumbing relationship is cross-confirmed from Minnesota's own official DLI page. South Dakota'S complete outbound acceptance list wasn't independently verified from the State Plumbing Commission'S own materials. Note that South Dakota's electrical reciprocity (15 states) is well documented but administered separately - it does not automatically extend to plumbing/pipefitting.

States accepted from
MN (cross-confirmed - this dataset's Minnesota plumber record confirms, from DLI's own official page, that Minnesota's plumbing reciprocity is limited to North Dakota and South Dakota)
See all trades in South Dakota

Tennessee

State license
Issuing agency: TN Board for Licensing Contractors - pipefitting falls under the contractor license (mechanical/plumbing classifications) documented across these states's Tennessee records. $25,000 threshold.

Same TBLC structure: Qualifying Party exam, financial statement, insurance. $25,000 threshold; Home Improvement license covers $3,000-$24,999 in certain counties.

Reciprocity existsOfficial source

Tennessee licenses pipefitting through its Board for Licensing Contractors. For mechanical and plumbing trades specifically, the trade-exam waiver list is narrow - only Ohio and South Carolina (commercial) are confirmed, notably fewer than Tennessee's electrical or general-contractor lists.

What's actually required: Confirmed from Tennessee's own Board for Licensing Contractors sources, already documented for TN plumber: for the mechanical/plumbing trades specifically, the waiver list is notably narrower than Tennessee'S electrical or general-contractor lists - only Ohio and South Carolina (commercial) are clearly confirmed. This is a trade-exam waiver only; the license must still be obtained in Tennessee.

States accepted from
OH (CONFIRMED from Tennessee's own board portal as covering Electrical, Plumbing, AND HVAC - the mechanical trades pipefitting falls under)SC (Commercial only, via SC Commercial Contractors Licensing Board - covers Building, Electrical, HVAC, Plumbing)
See all trades in Tennessee

Texas

State license
Issuing agency: Texas State Board of Plumbing Examiners (TSBPE) - pipefitters are licensed through the plumbing licensure system already documented for TX plumber; no separate pipefitter credential exists.

Same TSBPE ladder documented for Texas plumbing: registered apprentice -> tradesman -> journeyman -> master, each with supervised hours and an exam.

Reciprocity existsCross-confirmed

Texas licenses pipefitters through the plumbing board (TSBPE) - the same license and the same narrow reciprocity already documented for Texas plumbing: Louisiana and Arkansas only.

What's actually required: Since pipefitting runs through the TSBPE plumbing license, the reciprocity already confirmed in the TX plumber entry (Louisiana and Arkansas only, confirmed from TSBPE's own form) applies directly.

States accepted from
LAAR
See all trades in Texas

Utah

State license
Issuing agency: Utah DOPL - pipefitters licensed through DOPL's classification system (S210 Plumbing or a related mechanical specialty, depending on scope). No standalone pipefitter classification identified.

Same DOPL structure documented for Utah's other trades: 25-hour pre-license course for specialty classifications, exams where applicable, general liability insurance ($100,000/$300,000 minimum).

No reciprocitySecondary sources — not independently confirmed by the agency

Utah licenses pipefitting through DOPL. Rather than named-state reciprocity, Utah offers a case-by-case endorsement pathway for out-of-state licensees with 1+ year of equivalent licensure; Utah's Business & Law exam is still required.

Why, and what applies instead: This dataset's Utah records document a general DOPL endorsement pathway (1+ year of equivalent out-of-state licensure, still requiring Utah'S Business & Law exam) rather than named-state reciprocity. Utah's electrical reciprocity is genuinely contested - three substantially different accounts were found across sources - so no specific state list is asserted for pipefitting either.

See all trades in Utah

Vermont

State license
Issuing agency: Vermont Dept. Of Public Safety - plumbing contractor's license covers pipefitting; no standalone pipefitter credential. (Note: this differs from Vermont'S Office of Professional Regulation, which handles the Residential Contractor credential documented in the VT roofer entry.)

Plumbing contractor licensing through the Division of Fire Safety, referenced in the VT plumber entry.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Vermont licenses pipefitting through its plumbing contractor credential. That program's reciprocity wasn'T confirmed - and Vermont's confirmed electrical reciprocity with New Hampshire and Maine is a separate program that doesn'T automatically apply here.

What applies instead: This dataset's Vermont plumber record left the plumbing reciprocity list unconfirmed. Vermont'S electrical reciprocity with New Hampshire and Maine is confirmed and three-way cross-confirmed, but that's a separate program under the Electricians' Licensing Board - it does not automatically extend to plumbing or pipefitting.

Note: Vermont plumbing/pipefitting reciprocity needs a dedicated follow-up - same open item flagged in this dataset's VT plumber record.

See all trades in Vermont

Virginia

State license
Issuing agency: Virginia DPOR - Board for Contractors, Tradesman Program. Confirmed by a secondary source that DPOR issues journeyman licenses covering pipefitting under the Tradesman Program - the same program documented 's Virginia electrician/plumber/HVAC records.

Same DPOR Tradesman structure documented for Virginia's other trades: 4 years/8,000 hours qualifying experience or an approved apprenticeship, plus exam. A Class A/B/C contractor business license (entry point $1,000) is separately required to contract directly with customers.

No reciprocityOfficial source

Virginia licenses pipefitting through its DPOR Tradesman Program, but pipefitting does not appear on Virginia's official reciprocal-agreements document (which names specific agreements for electrical, HVAC, and plumbing). Treat as no reciprocity unless DPOR confirms otherwise.

Why, and what applies instead: Virginia's official DPOR 'Tradesmen Reciprocal Agreements' document - fetched in full and already documented 'S va electrician, plumber, and HVAC records - enumerates reciprocity by specific trade: electrical (7 jurisdictions), HVAC (Maryland only), and plumbing/gas fitting (WSSC only). Pipefitting does not appear as a named reciprocal trade in that document, so no reciprocity is recorded here.

See all trades in Virginia

Washington

State license
Issuing agency: Washington L&I - pipefitting falls under the plumber certification (journey-level or specialty) documented in the WA plumber entry; the contracting business separately registers as a specialty contractor. No standalone pipefitter credential.

Same L&I structure documented for Washington plumbing: plumber trainee -> 8,000 hours supervised experience (at least 4,000 commercial/industrial) -> journey-level exam. Contractor registration has no dollar-value exemption in Washington.

Reciprocity existsCross-confirmed

Washington licenses pipefitting through its plumber certification, whose only reciprocity partner is Idaho (journey-level only) - confirmed on L&I's own site. Washington'S contractor registration side has no reciprocity with any state.

What's actually required: Confirmed from Washington L&I's own official page, documented in the WA plumber entry: Washington'S only plumbing reciprocity is with Idaho, for journey-level plumbers only - other specialty certifications are not covered. Other out-of-state plumbers get case-by-case consideration, not a named agreement. Washington's contractor Registration (the business side) has no reciprocity at all.

States accepted from
ID (CONFIRMED from L&I's own page as Washington's only plumbing reciprocity partner, journey-level only)
See all trades in Washington

West Virginia

State license
Issuing agency: West Virginia - dual structure: the State Fire Marshal's Office and the WV Contractor Licensing Board (WVCLB, Division of Labor) both play roles. Pipefitting falls under WVCLB'S plumbing or HVAC specialty classifications, with the $2,500 threshold documented for West Virginia throughout this dataset.

WVCLB: PSI Business & Law exam + trade exam (70%+ each), $2,500 threshold. Note WV does not accept NASCLA for at least some classifications.

Reciprocity existsCross-confirmed

West Virginia licenses pipefitting through WVCLB's plumbing/HVAC classifications ($2,500 threshold). A mechanical-trades reciprocal relationship with Ohio is confirmed from Ohio'S own form, which explicitly covers HVAC, refrigeration, and plumbing. West Virginia's complete inbound list wasn'T verified.

What's actually required: The Ohio relationship is documented from Ohio's own OCILB reciprocity form (dico_WV_HVREPL_Reciprocity.pdf), which is unusually specific about mechanical trades - it names HVAC, Refrigeration, and Plumbing and requires original testing in West Virginia (grandfathered or reciprocally-obtained licenses don'T qualify). West Virginia's own complete inbound list for mechanical trades wasn'T independently verified - the same open item flagged in the WV plumber entry.

States accepted from
OH (cross-confirmed - Ohio's OCILB reciprocity form for West Virginia explicitly covers HVAC, Refrigeration, and Plumbing ('HVREPL'), and requires the applicant to hold a WV Master Plumber or HVAC Technician license plus a WV Contractor License, having originally tested in West Virginia)
See all trades in West Virginia

Wisconsin

State license
Issuing agency: Wisconsin DSPS - pipefitting falls under Wisconsin's plumbing licensing (nine plumbing license types documented in the WI plumber entry) or the HVAC Contractor Qualifier credential, depending on scope.

Same DSPS structure: Journeyman plumber requires a 5-year apprenticeship + 576 hours related instruction + exam; Master requires 1,000 hours/year as journeyman for 3+ years. 24 hours CE every 4 years.

No reciprocityCross-confirmed

Wisconsin has no formal pipefitting/plumbing reciprocity agreements - DSPS runs a case-by-case 'comity' review for comparable out-of-state licenses, but the Wisconsin exam is generally still required. Its narrow electrician reciprocity (Iowa, New Hampshire) is a separate program.

Why, and what applies instead: This dataset's Wisconsin plumber record confirms Wisconsin has no formal state-to-state plumbing reciprocity agreements - DSPS instead runs a case-by-case 'Comity (Out of State)' review (confirmed via an actual DSPS form, #3129) for comparable out-of-state licenses, which still typically requires passing the Wisconsin exam. Wisconsin'S HVAC side likewise has no reciprocity. Wisconsin's electrician reciprocity (Iowa and New Hampshire) is a separate program.

See all trades in Wisconsin

Wyoming

No state license — local/city licensing only

There is no state license for this trade — licensing, where it exists, happens at the city or county level.

Issuing agency: No statewide pipefitter license. Wyoming licenses only electricians among the building trades at the state level (confirmed repeatedly 's WY records) - plumbing, HVAC, general contracting, and roofing are all county/city-level. Cheyenne, Casper, and other municipalities run their own contractor licensing.

Varies by locality. Cheyenne, for example, issues eight contractor license classifications with experience and reference requirements.

No state license to reciprocateSecondary sources — not independently confirmed by the agency

Wyoming has no statewide pipefitter license - electrical is the only building trade Wyoming licenses at the state level. Licensing is county/city-level, and there is no state reciprocity because there is no state license.

What applies instead: No state license exists for this trade, so no state reciprocity framework applies. Wyoming's electrical reciprocity is extensive and well documented (16 states for Journeyman, but only Idaho, South Dakota, and Utah for Master) - that program covers electricians only and does not extend to pipefitting.

See all trades in Wyoming