Across 1,893 permits filed since 2025-05-08, the median is $8,696; half of projects fall between $3,500 and $17,500. Figures are permit valuations reported to building departments. National cost guides answer this question with averages from other markets; these numbers are what homeowners in Westchester County, NY actually reported when they pulled permits.
Recent filings
- REMOVE OIL BOILER . INSTALL NEW OIL BOILER.Town of Yorktown · 2026-11-06$16,100
- Replace existing oil fired boiler with 1 new Burnham V903 water boiler and 1 new Thermaflow 50 gallon Aqua Booster hot water storage tank in same basement location.Town of Ossining · 2026-11-06$34,256
- First Floor Half Bathroom including replacing the water and waste lines to move the toilet and sink 15 inches to make the installation NYS Plumbing Code compliant. Installation of a new hot water heater.Village of Ossining · 2026-11-06$6,000
How to read these numbers
Permit valuations are the project cost the applicant reports to the building department. They skew slightly low — nobody rounds up for the permit fee — and scope varies, so the middle-half range is the honest picture: half of all boiler / water heater permits in Westchester County, NY came in between $3,500 and $17,500. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.
Same project, other places
Boiler / water heater in New JerseyBoiler / water heater in New YorkBoiler / water heater in ConnecticutBoiler / water heater on Long Island