Across 378 permits filed since 2025-03-07, the median is $10,000; half of projects fall between $4,000 and $18,639. 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
- GENERATOR - 26 kW (Natural Gas) & XFER SWITCHScarsdale · 2026-09-02$22,000
- Install (4) 120 gal AG LP tank to be set on concrete pad (5'x5'). Run underground gas line from proposed gas line from proposed LP tanks to proposed generator BP2026-0579Town of North Castle · 2026-09-02$5,450
- Replacement of existing generator in new locationTown of North Castle · 2026-09-02$10,000
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 standby generator permits in Westchester County, NY came in between $4,000 and $18,639. 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
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