Across 46 permits filed since 2025-03-10, the median is $26,850; half of projects fall between $10,000 and $108,250. 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 Ulster County, NY actually reported when they pulled permits.
Recent filings
- Install Mini-Splits (5 units) 1 in each bedroom, 1 in the living room, and 1 in the finished basement, with 2 condensers 1 36k BTU and 1 28k BTU. Inspections Required: Third-Party Electrical & Final InspectionHurley · 2026-08-24$11,000
- Basement alterations as per plans. Not to be used as accessory apartment.Town of Lloyd · 2026-08-10$15,000
- basement renovation: insulation, weather proofing, window, fire rated closet for washer/ dryer ventless combo. *9/2/26 Closed cell spray foam per quote- insulation is to be covered with an appropriate ignition barrier per code.Kingston · 2026-08-10$23,700
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 Ulster County, NY came in between $10,000 and $108,250. 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