Across 34 permits filed since 2025-03-10, the median is $66,000; half of projects fall between $36,250 and $123,750. 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 18' X 38' INGROUND POOL INCLUDING DRYWELL, FENCING, AND ALARMS INSTALLED IN ACCORDANCE WITH NYS & RVC CODES. FINAL SURVEY REQUIRED FOR LETTER OF COMPLETION.Rockville Centre · 2026-09-04$89,000
- Pool - minor alterations to existing inground poolLawrence · 2026-08-25$10,000
- CONSTRUCTION OF AN INGROUND POOL, POOL PATIO, POOL FENCING, RETAINING WALL, DRIVEWAY, STEPPINGSTONES, OUTDOOR KITCHEN, FIREPIT AND FRONT YARD WALKWAYKings Point · 2026-08-20$400,000
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 inground pool permits in Nassau County, NY came in between $36,250 and $123,750. 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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