A licensed plumber in Yonkers for houses, two- and three-families and small commercial buildings — emergency calls, boilers and steam heat, sewer lines and water service lines, any hour including holidays. KBD holds Westchester County plumbing license #1744, which is the license the City of Yonkers works from.
Yonkers is the biggest city in Westchester and it does not plumb like the villages up the river. The housing is older and denser, a lot of it is two- and three-family, and a single stack can be carrying three kitchens and three bathrooms that were all added at different times. When something fails it is rarely one fixture — it is one shared line that three households are standing on.
Any plumber in Yonkers runs into the same four things, and they are what the rest of this page is about: who licenses the work, which pipe is the city's and which is the owner's, when to call the city instead of a plumber, and what tends to go wrong in this housing stock. KBD covers the whole city, from Getty Square to the northeast.
Read off the city's own website in October 2026 and linked so you can check it. Offices and schedules change — treat the link as the source rather than this page.
Since countywide licensing was adopted in 1996 the City of Yonkers has not licensed plumbers itself. Its Plumbing Division, part of the Department of Housing & Buildings, keeps a list of the Westchester County-licensed plumbers who can work in the city and points to the county's own list. KBD holds Westchester County license #1744, and the Plumbing Division is at 914-377-6566 if you want to check.
Plumbing applications are filed online through City Squared, the same system the village of Dobbs Ferry uses, with the Westchester County plumbing hold-harmless form on file first. The city has separate filings for extending a permit, amending one, and changing the plumber on one that is already open. Allow around two weeks for plan review on work that needs it — which is the part people forget when they want a bathroom moved before a holiday.
The main is the city's; the service line is not. Yonkers says property owners own and are responsible for their water service line from the house all the way to its connection at the city's water main. Lead and galvanized service lines turn up mostly in houses built before the mid-1940s, and the city has published a 2026 inventory of service line materials by property, worth a look before you assume yours is copper.
The city's Sewer Bureau maintains about 400 miles of combined sanitary and storm sewer, rainwater and wastewater in the same pipe, and much of it was built in the early 1900s. Its crews answer sewer emergencies 24 hours a day. When a Yonkers basement drain backs up, note whether it was raining hard: a backup during a downpour is worth reporting to the city, while one on a dry day is more often the house's own line, and the camera settles which.
The Water Bureau runs over 400 miles of water line and more than 4,500 hydrants, deals with around 60 main breaks in a typical year, and marks out its mains for utilities and contractors before they excavate, on a 24/7 basis when it is an emergency. On a water service replacement in Yonkers that mark-out is not paperwork: hitting an unmarked main turns a repair on the owner's side into a street closure.
Since January 1, 2020, Yonkers Housing & Buildings has not allowed PVC or CPVC pipe and fittings to carry the exhaust from direct-vent boilers and water heaters, and says it enforces that strictly. The same department lists boilers among the equipment it inspects across the city. Any plumber in Yonkers replacing one has to vent it with a venting system made for the job, not PVC or CPVC.
One cast iron stack serving three kitchens, and a blockage that shows up in the lowest apartment first. Camera it before anyone opens a wall.
Pre-war houses here still have original galvanized risers. The symptom is pressure that got worse over years, not overnight, and the fix is repiping rather than a valve.
One-pipe steam that bangs all winter, radiator vents and valves nobody has turned in years, and the original boiler behind it all. Gas boiler, steam and hot-water heat, not oil.
The line from the city's main to the house is the owner's in Yonkers, and lead and galvanized services turn up mostly on houses built before the mid-1940s. Replacing one means the Water Bureau's mark-out first and the sidewalk put back properly after.
Usually one water service, and often one stack, shared by every apartment, so a repair is planned around all the tenants, not just the one who called. Certificates of insurance before anyone enters, and the price agreed before it starts.
All twenty-five services run in Yonkers. These are the six the phone rings for most.
Need an emergency plumber in Westchester? Water you can’t stop, sewage backing up, a gas smell or no heat in freezing weather: what counts, what to do first, and who to call at any hour.
Sewer line repair across Westchester — the problem found on camera first, roots cut out, broken lines repaired, and excavation scoped project by project.
Repiping for Westchester homes — failing galvanized and old copper lines replaced, a bathroom at a time or a whole house, staged so the house is not left without water overnight.
Boiler repair across Westchester for gas, hot water and steam systems — no heat, no hot water, leaks, noise, pressure loss and boilers that lock out and will not restart.
Drain cleaning across Westchester for kitchen, bathtub, shower, toilet and main-line clogs, with our own sewer camera and hydro-jetter for lines that keep blocking.
Gas leak repair across Westchester County, 24 hours a day: leaks traced and repaired, connections made safe, and help getting service restored after a Con Edison or National Grid shut-off.
Calling a plumber in Yonkers at night? Tell us first whether the water is inside the building or coming up outside: a break in the city's main is the Water Bureau's repair, and we will say so rather than send someone. If it is your own service line, anywhere between the main and the house, or anything inside, the phone is answered nights, weekends and holidays, the license number is on every job, and the price is agreed before the work starts.
Still not sure? Phone us — asking costs nothing.
A Westchester County plumbing license. The city has not licensed plumbers itself since countywide licensing was adopted in 1996; its Plumbing Division keeps a list of the county-licensed plumbers who can work in Yonkers. Ask for the license number before anyone starts and check it against the county's list. KBD's is #1744.
If water is coming up through the street, call the city first: a main break is the city's repair. The Water Bureau's repair shop is at 914-377-6738, and Public Works, the Sewer Bureau included, takes calls through the Mayor's Help-Line, which the city lists as 24/7 at (914) 377-4357. If the Water Bureau finds its main intact, the leak is in the service line, which in Yonkers is the owner's all the way to the main, and that is ours to repair. If the water is inside the building, shut the main valve and call us at (914) 233-3000, any hour, holidays included. If you smell gas, get out first and call 911 and the gas utility from outside.
Yes. Gas boilers, hot-water heat and steam, including the one-pipe steam systems still common in older Yonkers buildings: radiator vents and valves, low-water cut-offs and the banging. We do not work on oil heat or air conditioning, and we will say so on the phone rather than send someone.
In many cases, the owner. The city's Water Bureau says many Yonkers homeowners are responsible for the water and sewer service lines that run under their property, between the house and the city's mains. The mains themselves are the city's. If the house line is the problem, our camera shows where and why, and the price is agreed before any work starts.
The property owner. The city's Water Bureau says owners are responsible for protecting both the pipes and the water meter from freezing. Leave the door to the meter's room or cabinet open so warm air reaches it, and if it sits in an outdoor pit, check the cover fits, is not cracked, and that nothing inside touches the concrete. If a pipe has frozen and will not thaw, call us.
Guides written off real jobs in the Rivertowns, with photographs from the day — what went wrong, what it was telling us, and what you can check yourself before it costs anything.
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