Across 27 permits filed since 2025-01-25, the median is $57,000; half of projects fall between $37,500 and $110,000. 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
- INSTALL PAVER PATIO IN BACKYARD WITH 4" POURED CONCRETE BASE,INSTALL NEW POOL COPING AROUND EXISTING INGROUND POOL,INSTALL 55 GALLON DRYWELL FOR THE FUTURE OUTDOOR SHOWERCity of Long Beach · 2026-07-22$34,700
- CONSTRUCT IN GROUND GUNITE SWIMMING POOL WITH INFINITY EDGE, SPA STEPS, WALKWAYS, POOL ENCLOSURE FENCING, DRIVEWAY AND ALL SUPPORTING LANDSCAPINGKINGS POINT · 2026-06-09$125,000
- Residential Swimming Pool- Installation of a 20' x 40' inground swimming poolVillage of Garden City · 2026-06-04$69,150
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 inground pool permits in Nassau County, NY came in between $37,500 and $110,000. 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
Inground pool in New YorkInground pool in ConnecticutInground pool on Long Island