Town of Mamaroneck
Westchester County, New York
Last verified September 17, 2026
Town of Mamaroneck is a jurisdiction in Westchester County, New York, with an online portal for searching and pulling active or historical building permits. Use the contact information below to reach the local building department.
Contact
- Phone
- 914-381-7830
- buildingdept@townofmamaroneckny.gov
- Department Site
- Building & Code Enforcement (opens in a new tab)
Additional Notes
This is the TOWN of Mamaroneck, distinct from the separately-governed Village of Mamaroneck (own building dept at villageofmamaroneckny.gov) and the Village of Larchmont, both located within the town. Address: 740 West Boston Post Road, Mamaroneck, NY 10543. Hours Mon-Fri 8:30am-4:00pm.
What You Need Before Applying for a Permit
Most building departments ask for the same core package before they'll issue a permit: a completed application naming the property owner and contractor, the contractor's state license number and proof of insurance (general liability, and workers' comp if employees are on the job), a notice of commencement or equivalent recorded filing for larger jobs where the state requires one, and scaled plans or a site plan for anything beyond minor repairs. Roofing, fence, pool, and solar permits typically have their own simplified checklists — Town of Mamaroneck's department (above) can confirm exactly what applies to your project.
Why this matters for insurance: permit history is one of the first things an underwriter or adjuster checks. Unpermitted work — a finished basement, an added bedroom, a rebuilt roof — can complicate a claim or even void coverage for that portion of the loss, and it routinely surfaces during a home inspection. Pulling the right permit up front, and keeping the closed-permit record on file, protects both the property's value and its insurability at resale.
More in Westchester County
See Westchester County property and court records →
Other building permit jurisdictions in Westchester County:
- Village of Ardsley
- Town of Bedford
- Village of Briarcliff Manor
- Village of Bronxville
- Village of Buchanan
- Town of Cortlandt
- Village of Croton-on-Hudson
- Village of Dobbs Ferry
- Town of Eastchester
- Village of Elmsford
- Town of Greenburgh
- Village of Harrison
- Village of Hastings-on-Hudson
- Village of Irvington
- Village of Larchmont
- Town of Lewisboro
- Village of Mamaroneck
- Village of Mount Kisco
- Town of Mount Pleasant
- City of Mount Vernon
- Town of New Castle
- City of New Rochelle
- Town of North Castle
- Town of North Salem
- Village of Ossining
- Town of Ossining
- City of Peekskill
- Village of Pelham
- Village of Pelham Manor