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Watertown packs more two-family homes per block than almost anywhere we work, from Coolidge Square to the West End — and lately, new condo buildings along Arsenal Street have joined them. IS Plumbing covers both worlds: century-old two-families with original iron and brass, and modern units with quirks of their own. Licensed plumbing, gas and heating work, permitted through the city.
The classic Watertown house is a 1910s-1920s two-family: front-and-back porches, two kitchens stacked, one water service in the basement, and a drain system modified by every owner since. We straighten out those basements — clear labeling and separate shutoffs per unit, water heaters matched to each household, gas lines brought to current code when a stove or dryer moves. In East Watertown and near the Square we also see condo and mixed-use buildings where coordination with property managers matters as much as the pipe work. Either way, you get a written scope, tidy workmanship and a passed inspection.
Watertown is a fully MWRA community — Quabbin and Wachusett water in, Deer Island treatment out — with the city maintaining the local mains beneath its streets. In housing this old, the private side is where problems live: original water services that can still be lead or galvanized, interior pipe from several eras, and clay sewer laterals that roots have been working on for decades.
Watertown issues its own plumbing and gas permits through the city's building division, separate from Boston's system, and we file there for every job. A staple project locally is the two-family water heater pairing: replacing mismatched old tanks with two correctly sized units — or a shared indirect where the building's setup supports it — so neither floor runs short of hot water.
Based in Millbury, MA, we cover all of Watertown and the surrounding towns. Don't see your street? Call +1 (774) 486-0909 and ask.
Almost always. We set correctly sized heaters per unit with individual shutoffs, so one household's usage or a failure never affects the other — a standard upgrade in Watertown's two-family housing.
Yes. We handle in-unit plumbing repairs, fixture swaps and heater replacements in newer condos, coordinating access and insurance certificates with the property manager where the building requires it.
Start with the city's water division to check their records, then have us verify the pipe at your meter. If it is lead or galvanized, we replace the private side under a city permit.
Often, yes. We can zone the existing system or install separate heating per unit — which also cleans up utility billing between floors. It starts with a look at your piping layout.
On us. Plumbing and gas permits in Watertown are filed with the city's building division under our license, and the inspection is part of the job, not an extra.
From our shop in Millbury, MA we serve Watertown and the surrounding towns across the Worcester area, MetroWest and Greater Boston. Don't see your town listed? Call and ask.
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