Across 115 permits filed since 2025-01-28, the median is $15,000; half of projects fall between $7,847 and $23,170. 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 London County, CT actually reported when they pulled permits.
Recent filings
- Replacing a 12'x13' deck with a 14'x16' deck.Town of Waterford · 2026-07-23$15,000
- putting new Trex decking on an existing deck on the identical footprint.Town of Waterford · 2026-07-22$49,000
- BOOT BARN TENANT FIT OUT ELECTRICAL WORK Furnishing and installing (1) 15KVA floor mounted transformer, (1) 50A panel and associated conduit and feeders per the riser diagram, Furnishing and installing new circuit breakers in the existing Town of Waterford · 2026-07-21$98,000
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 deck permits in New London County, CT came in between $7,847 and $23,170. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.