Across 39 permits filed since 2025-01-25, the median is $18,000; half of projects fall between $10,000 and $47,500. 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 White Plains, NY actually reported when they pulled permits.
Recent filings
- Replace fifteen (15) feeders to 70amp; Replace one (1) electrical panel; install one (1) additional house meter and panel; install sixteen (16) electric range circuits (one to each apt); install sixteen (16) surge protectors (one in each paWhite Plains · 2026-06-16$74,426
- Widen and replace driveway, front porch platform extension and resurface walkway with new brick pavers.White Plains · 2026-06-02$13,800
- Provide electrical wiring in new additions and interior renovated space.White Plains · 2026-05-18$12,000
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 White Plains, NY came in between $10,000 and $47,500. 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
Home addition in New YorkHome addition in ConnecticutHome addition on Long Island