Across 275 permits filed since 2025-03-10, the median is $13,900; half of projects fall between $8,225 and $26,000. 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 Nassau County, NY actually reported when they pulled permits.
Recent filings
- REPAIR EXTERIOR & INTERIOR FROM FIRE DAMAGE - SHEETROCK,WINDOWS,DOORS,INSULATION,ELECTRICAL,PLUMBING, PAINT & TRIM,REPAIR FRAMING & ROOFING ELEC - GO WEST PLUM - B&T **NEW CERTIFICATE OF OCCUPANCY REQUIRED** **ALL WORK TO CONFORM TO NYS UNCity of Long Beach · 2026-09-08$205,000
- DIRECT REPLACEMENT OF ROOF **ALL WORK TO CONFORM TO NYS UNIFORM FIRE PREVENTION AND BUILDING CODE** **CONSTRUCITON MATERIAL MUST BE REMOVED BY CONTRACTOR** **NUMBER OF LAYERS OF ROOFING NOT TO EXCEED TWO**City of Long Beach · 2026-09-04$10,000
- REPLACING ROOF SHINGLESRockville Centre · 2026-09-03$24,000
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 roof replacement permits in Nassau County, NY came in between $8,225 and $26,000. 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
Roof replacement in New JerseyRoof replacement in New YorkRoof replacement in ConnecticutRoof replacement on Long Island