Across 154 permits filed since 2025-03-09, the median is $15,000; half of projects fall between $6,750 and $25,750. 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 Milford, CT actually reported when they pulled permits.
Recent filings
- Remove existing deck and install new deck in its place.City of Milford · 2026-09-04$6,000
- Construct a new residential wood/composite outdoor deck attached to the rear of the primary dwelling. Deck will be 14ft. x 30ft. (420 sq. ft.), with a maximum height of 36in. above grade. Foundation will have 12in. diameter poured concrete City of Milford · 2026-09-01$26,000
- Repair damaged existing deck stair stringer by installing a new sister stringer alongside the existing stringer, and install an additional middle stringer for added structural support. Existing staircase will not be disassembled or rebuilt.City of Milford · 2026-08-26$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 deck permits in Milford, CT came in between $6,750 and $25,750. 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
Deck in New JerseyDeck in New YorkDeck in ConnecticutDeck on Long Island