Across 52 permits filed since 2025-01-25, the median is $8,210; half of projects fall between $4,000 and $15,250. 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 Nassau County, NY actually reported when they pulled permits.
Recent filings
- Residential Electrical - Run wiring to 26 Kw generatorVillage of Garden City · 2026-07-23$2,000
- NEW STANDBY 60KW GENERATORKINGS POINT · 2026-07-21$30,000
- Residential Piping & Fixtures - Run waste/water/vent to new master bath, three-piece & two-piece bath, kitchen sinks, washer, install reverse osmosis system, gas line to dryer, two fireplaces and future generatorVillage of Garden City · 2026-07-13$20,000
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 Nassau County, NY came in between $4,000 and $15,250. 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
Standby generator in New YorkStandby generator in ConnecticutStandby generator on Long Island