Plumbing in Boston is old-house plumbing
Boston is one of the oldest housing markets in the country, and its plumbing shows it: 46.7% of the city's homes were built in 1939 or earlier, according to the Census Bureau's latest estimates. Triple-deckers in Dorchester and South Boston, brick row houses in the South End and Charlestown, Victorians in Jamaica Plain and Roslindale: many of them have plumbing that has been patched, extended and partly replaced over a century. That is why the same handful of problems come up again and again across the city.
Cast-iron drain stacks rust and scale from the inside until they crack or clog. Galvanized steel supply pipe narrows with corrosion, dropping the water pressure and eventually leaking at the threads. Lead service lines, the pipe that brings water in from the street, still serve some older homes, and Boston runs a program to replace them (see our lead pipes guide).
Many houses heat their water from the boiler, so a no-hot-water problem can really be a heating problem. And in older neighborhoods with combined sewers, heavy storms can push water back up through basement drains.
Then there is winter. The average January low at Logan Airport is 23.1°F, and pipes in exterior walls, porches, crawl spaces and the cold corners of basements freeze in a hard cold snap, and the leak often appears only when the ice thaws. Our frozen pipes page explains how to thaw a pipe safely and how to keep it from happening again.
How to choose a plumber in Boston (and spot a bad one)
Whoever you hire, a few checks take five minutes and protect you from most of the horror stories. In Massachusetts plumbing is a licensed trade, regulated by the state Board of State Examiners of Plumbers and Gas Fitters, and most jobs beyond simple repairs need a permit that only a licensed plumber can pull. A good plumber expects to be asked about both.
- Ask for the Massachusetts license number and look it up online before work starts; our license guide shows how.
- Get the price or the pricing method on the phone: call-out fee, hourly rate, and whether nights and weekends cost more.
- Ask whether the job needs a permit. Water heaters, gas work and new piping usually do. "We don't need a permit for that" on a permit job is a red flag.
- Get a written estimate for anything bigger than a repair, and a written invoice when the job is done.
- Be wary of cash-only demands with no paperwork, pressure to decide on the spot, a large deposit before any work, or someone who can't give you a license number.
What plumbers cost in Boston
Boston is an expensive place to hire a tradesperson, and plumbing is no exception. Government data puts the average plumber's wage in the Boston area at $44.62 an hour in May 2025, against $34.70 nationally, and that is before the company's overhead.
ConsumerAffairs' Boston guide (August 2026) puts licensed plumbers at about $125 to $250 an hour, with a service call fee of $125 to $300. Many charge more for nights, weekends and holidays, and big jobs such as water heater replacement, repiping or sewer line repair are quoted per job.
We don't set prices, and we never make one up. Our Boston plumber cost guide brings together the government wage data for plumbers in the Boston area and the published price ranges for common jobs, with sources, so you can judge whether a quote is reasonable.
Who to call for what
Not every water problem is a plumber's job. Calling the right number first saves time, and sometimes money.
| Problem | Call first |
|---|
| Leak, clog, no hot water or sewer backup inside your home | A licensed plumber from the directory on this page |
| You rent and something has stopped working | Your landlord or property manager, in writing; then a plumber if they ask you to |
| Smell of gas | Leave the building; call 911 or the gas company from outside |
| Water main break, or no water at any tap | Your water and sewer department (in Boston, BWSC's 24-hour line: (617) 989-7900) |
| Several houses on the street backing up at once | Your water and sewer department, then a plumber for your own line |
| Water through a ceiling from the unit above | Your neighbor or building manager, and a plumber if the water won't stop |
Each area page lists the local water department and permit office.
Winter is plumbing season in Boston
Searches for help with frozen pipes in Boston jump several times over in January, and it's easy to see why. Water damage and freezing are now the most common reason for a home insurance claim in the state: the Massachusetts Division of Insurance says they made up 48.6% of homeowners' claims in 2024. A few minutes before the first hard freeze saves most of the trouble: find your main shutoff (Boston Water and Sewer notes it is usually by the meter), seal drafts near pipes in the basement, open the cabinets under sinks on outside walls, and let a slow trickle run from faucets on pipes in unheated spaces on the coldest nights.
If a pipe does freeze, thaw it gently with a hair dryer or warm towels, never an open flame. The full steps, and what to do if it has burst, are on our frozen pipes page.
If you rent in Boston
Most Boston households rent, and a plumbing problem in a rental is the landlord's to fix. Under the Massachusetts State Sanitary Code, the owner must maintain the plumbing and the equipment that heats the water, and hot water has to reach at least 110°F unless a written lease makes you responsible for the fuel. Report the problem to your landlord or property manager in writing, and if it isn't fixed, Boston residents can request an inspection from the city's Inspectional Services Department through 311; elsewhere, contact the local board of health.
In a real emergency, such as water pouring through a ceiling, shut off the water if you can, protect your things and keep trying the landlord. Call a plumber yourself only if the landlord tells you to, or you have agreed in advance who pays.
Boston neighborhoods and the towns around them
The directory covers the City of Boston, from Charlestown and East Boston to West Roxbury and Hyde Park, and the cities and towns around it, including Cambridge, Somerville, Brookline, Newton, Quincy, Milton, Dedham and Needham, Watertown and Arlington, and Medford, Malden, Everett and Revere to the north. Each area page covers who runs the local water and sewer, where permits come from, the local housing and the problems it tends to bring.
