Across 247 permits filed since 2025-01-28, the median is $10,000; half of projects fall between $4,500 and $25,875. 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 Erie County, NY actually reported when they pulled permits.
Recent filings
- NEW BEAM AND COLUMNS SUPPORTING UPPER PORCH DECK FROM EXISTING FIRST FLOOR *** DIGEPLAN *** Buffalo · 2026-07-27$2,500
- THE WORK TO BE PERFORM IN THIS JOB ARE:1-INTERIOR REPAIR TO EXISTING 1ST & 2ND FLOOR PLANS-ALTERATION LEVEL 2. SEE DETAIL ON A3 ON THE PERMIT SET DRAWINGS.2-REPAIR FRONT ENTRANCE PORCH.3-PROPOSED NEW EXTERIOR DECK. SEE DETAIL ON A4 ON TBuffalo · 2026-07-27$75,000
- Tear off existing plywood and shingles and dispose of off site. Install new decking and 6 feet of ice and water and synthetic felt. Install wide face drip and architectural shingles.Buffalo · 2026-07-24$9,875
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 Erie County, NY came in between $4,500 and $25,875. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.