Across 48 permits filed since 2025-05-02, the median is $122,500; half of projects fall between $79,750 and $285,000. 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 Garden City, NY actually reported when they pulled permits.
Recent filings
- Construct 119 sq. ft. one story rear additionVillage of Garden City · 2026-10-30$100,000
- Construct 812 sq. ft. rear roofed over patio additionVillage of Garden City · 2026-10-30$125,000
- Residential Electrical - Run wiring to second story addition with three-piece bathVillage of Garden City · 2026-10-23$4,000
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 home addition permits in Garden City, NY came in between $79,750 and $285,000. 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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