Unincorporated Westchester County

Building permits are required for all covered construction, alteration, and related work subject to the New York Uniform Fire Prevention and Building Code and Energy Code as adopted by the local jurisdiction.

Note: State-level permit exemptions do not waive zoning, planning, floodplain, health, utility, or local land-use approvals. Confirm applicable local exemptions with the jurisdiction before proceeding.

Building code

New York Uniform Fire Prevention and Building Code (2025 update effective December 31, 2025)

Permit validity

Varies by jurisdiction.

Owner-builder

Owner-builder requirements vary by jurisdiction.

Contractor requirements

Contractor licensing and bonding requirements vary by jurisdiction.

Source: Westchester County Building Department Contact List ↗

1. 01
   Determine the applicable city, town, village, or coterminous town-village with jurisdiction over the parcel.
2. 02
   Consult the Westchester County local building department contact list for the correct office.
3. 03
   Apply to the applicable local government building or code-enforcement office.
4. 04
   Submit all required documents per local jurisdiction requirements.
5. 05
   Pay local permit and plan-check fees.
6. 06
   Schedule and pass required inspections.
7. 07
   Obtain certificate of occupancy or use.

Typical processing time: Varies by jurisdiction; typically 2-8 weeks.

Source: Westchester County Building Department Contact List ↗

Typical sequence: Inspection requirements vary by jurisdiction.