Across 30 permits filed since 2025-05-04, the median is $4,500; half of projects fall between $2,125 and $6,500. 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 New Rochelle, NY actually reported when they pulled permits.
Recent filings
- ---Legalize the Basement Laundry room remodelNew Rochelle · 2026-10-06$2,500
- Take over to finish and close existing permit (EP2025-0066)118 lights, 67 outlets, 37 switches throughout home, kitchen , 5 bathrooms , ac/ heating system, water heater . Exterior lights. Garage, basement ,1st fl,2nd fl, 3rd fl , atticNew Rochelle · 2026-09-25$6,500
- ---this is a legalization of a basement bathroom and a 2nd floor bathroomNew Rochelle · 2026-09-17$1,800
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 basement finishing permits in New Rochelle, NY came in between $2,125 and $6,500. 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
Basement finishing in New YorkBasement finishing in ConnecticutBasement finishing on Long Island