Across 100 permits filed since 2025-05-04, the median is $9,250; half of projects fall between $3,875 and $55,750. 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
- Rough-in and install Addition - shower, toilet, sink laundry kitchen sink, dish, ice Master bath - shower, toilet, 2 sinks Hall bath - toilet, tub/shower, sink Mud room - toilet, sink, washer Basement - radon 2 spigotsCity of Milford · 2026-10-23$13,000
- New addition First floor bathroom 2 sinks 1 toilet 1 walk in shower. 1 soaking tub Second floor bathroom 1 shower 1 sink 1 toiletCity of Milford · 2026-10-21$6,500
- New Wiring of receptacles, wafer lights, switching, and smoke detectors in kitchen, living room, and bedrooms. Wiring of 2nd floor bathroom addition.City of Milford · 2026-10-20$10,000
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 Milford, CT came in between $3,875 and $55,750. 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
Home addition in New JerseyHome addition in New YorkHome addition in ConnecticutHome addition on Long Island