Across 114 permits filed since 2025-01-25, the median is $27,750; half of projects fall between $15,374 and $47,375. 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 Fairfield County, CT actually reported when they pulled permits.
Recent filings
- Amend#1: Siding and bluestone patio resurfacing.Town of Greenwich · 2026-07-24$55,000
- To install a 48A Emporia EV charger controlled by a load management meter outside attached to siding, and replace the main 200A electrical panel.Fairfield · 2026-07-14$5,900
- New siding.Town of Greenwich · 2026-07-10$50,000
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 siding permits in Fairfield County, CT came in between $15,374 and $47,375. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.