LicensebyState

Moving to Maryland as a master plumber: every state's rule

Maryland has reciprocity agreements with 2 states. Everyone else follows its standard out-of-state path: experience credit.

Maryland master plumber · “Master Plumber/Gas Fitter”

State license plus local requirements

Verified September 16, 2026· 9 sources

Issued by Maryland State Board of Plumbing (Department of Labor)

Maryland issues a statewide Master Plumber/Gas Fitter license through the State Board of Plumbing. By statute a master plumber is licensed to provide plumbing services and natural gas services. Qualification on the Board's License Requirements page is two years as a journey plumber plus 3,750 hours of work as a journey plumber under a master, then the PSI master exam. The original Master Plumber/Gas Fitter license fee is $87.50 (updated July 1, 2025; renewal is also $87.50). Masters must carry general liability of at least $300,000 and property damage of at least $100,000 ($400,000 per occurrence), with the Board named as certificate holder; umbrella policies are not accepted. Reciprocal Master Plumber/Gas Fitter licenses are issued to holders licensed by the District of Columbia, Delaware (master only), WSSC, or Baltimore County (WSSC and Baltimore County applicants must hold both plumbing and gas licenses obtained by examination).

How local licensing works in Maryland

Same territorial split as the journeyman level: the State Board license is not the license for Baltimore County or for WSSC territory in Montgomery and Prince George's Counties. Those jurisdictions license plumbers separately and enforce their own plumbing codes. A master who will contract in WSSC territory needs the WSSC plumber license; work only in Baltimore County needs the county license. Propane-gas-fitter certificates from the State Board are valid in the entire state. The reciprocal-license page states the Board may issue a State master plumber license to a person already licensed by WSSC or Baltimore County if that person holds both plumbing and gas licenses obtained by examination.

  • Washington Suburban Sanitary Commission (Montgomery County)
  • Washington Suburban Sanitary Commission (Prince George's County)
  • Baltimore County

States Maryland reciprocates with

Every origin state

Reciprocity 2Experience credit 36No credit 12
Every state's path into Maryland
StateMechanismNoteVerified
AlabamaExperience credit2026-09-16
AlaskaExperience credit2026-09-16
ArizonaNo creditno state license to transfer2026-09-16
ArkansasExperience credit2026-09-16
CaliforniaExperience credit2026-09-16
ColoradoExperience credit2026-09-16
ConnecticutExperience credit2026-09-16
DelawareReciprocityexplicit agreement2026-09-16
District of ColumbiaReciprocityexplicit agreement2026-09-16
FloridaExperience credit2026-09-16
GeorgiaExperience credit2026-09-16
HawaiiExperience credit2026-09-16
IdahoExperience credit2026-09-16
IllinoisExperience credit2026-09-16
IndianaExperience credit2026-09-16
IowaExperience credit2026-09-16
KansasNo creditno state license to transfer2026-09-16
KentuckyExperience credit2026-09-16
LouisianaExperience credit2026-09-16
MaineExperience credit2026-09-16
MassachusettsExperience credit2026-09-16
MichiganExperience credit2026-09-16
MinnesotaExperience credit2026-09-16
MississippiNo creditno state license to transfer2026-09-16
MissouriNo creditno state license to transfer2026-09-16
MontanaExperience credit2026-09-16
NebraskaNo creditno state license to transfer2026-09-16
NevadaNo creditno state license to transfer2026-09-16
New HampshireExperience credit2026-09-16
New JerseyExperience credit2026-09-16
New MexicoExperience credit2026-09-16
New YorkNo creditno state license to transfer2026-09-16
North CarolinaExperience credit2026-09-16
North DakotaExperience credit2026-09-16
OhioExperience credit2026-09-16
OklahomaExperience credit2026-09-16
OregonNo creditno state license to transfer2026-09-16
PennsylvaniaNo creditno state license to transfer2026-09-16
Rhode IslandExperience credit2026-09-16
South CarolinaExperience credit2026-09-16
South DakotaExperience credit2026-09-16
TennesseeNo creditno state license to transfer2026-09-16
TexasExperience credit2026-09-16
UtahExperience credit2026-09-16
VermontExperience credit2026-09-16
VirginiaExperience credit2026-09-16
WashingtonNo creditno state license to transfer2026-09-16
West VirginiaExperience credit2026-09-16
WisconsinExperience credit2026-09-16
WyomingNo creditno state license to transfer2026-09-16

Related