State plumbing guide · MA
Plumbing in Massachusetts
Massachusetts has one of the most tightly regulated plumbing systems in the country. A state board writes the Uniform State Plumbing Code and licenses every plumber and gas fitter, down to apprentices. Very old housing and cold winters shape the work.
- Median home built
- 1965
- Built before 1980
- 66%
- Owner-occupied
- 62%
- Winter
- Regular hard freezes
- General statewide rating
- Plumbing code
- State code
- City guides
- 4
Housing figures: U.S. Census Bureau, ACS 2024 1-year (B25035, B25034).
Massachusetts city plumbing guides
How to check a plumber's license in Massachusetts
The Board of State Examiners of Plumbers and Gas Fitters licenses master and journeyman plumbers and gas fitters, and even apprentices, who must work under the supervision of a licensed plumber or gas fitter. [1]
Massachusetts's older housing stock
Statewide, the median home was built in 1965 and 66% of homes predate 1980. Homes like that were usually built with copper or galvanized supply, cast iron drains, clay or cast iron sewer laterals. The city guides below show how much that varies within the state.
Which plumbing code applies in Massachusetts
Plumbing in Massachusetts is governed by the Uniform State Plumbing Code, 248 CMR 10.00, set by the Board of State Examiners of Plumbers and Gas Fitters. [2]
Seasonal problems to plan for in Massachusetts
- Winter
- Long cold spells and nor'easters. Frozen pipes in exterior walls, unheated porches and basements.
- Spring
- Snowmelt and rain raise groundwater, so sump pumps and basement drains get tested.
Regions of Massachusetts
Greater Boston
Very old housing, triple-deckers and brownstones, soft reservoir water, and cold winters.
Massachusetts plumbing questions
Does a plumber in Massachusetts need a state license?
Yes. The Board of State Examiners of Plumbers and Gas Fitters licenses plumbers and gas fitters at every level, including apprentices. Ask for the license and verify it with the board.
Which plumbing code applies in Massachusetts?
The Uniform State Plumbing Code, 248 CMR 10.00, which applies throughout the Commonwealth.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035, B25034) · checked 2026-10-01
- Mass.gov, 248 CMR: Board of State Examiners of Plumbers and Gas Fitters · checked 2026-10-01
- Mass.gov, 248 CMR 10.00: Uniform state plumbing code · checked 2026-10-01