Across 88 permits filed since 2025-01-28, the median is $50,000; half of projects fall between $11,500 and $200,000. 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 York County (Manhattan), NY actually reported when they pulled permits.
Recent filings
- Structural work for renovation to HSS Physical Therapy on 1st floor. Work to include demo of the existing concrete on metal deck raised slab. Provide new raised slab on gravel fill.Manhattan · 2026-07-22$25,000
- IN REAR YARD, REPLACE CORRODED PERFORATED METAL FAI COVER WITH NEW CONCRETE SLAB OVER METAL DECKING AND NEW FAI.Manhattan · 2026-07-20$10,000
- FILING FOR ST/FO WORK FOR REACH 2 - CONSTRUCTION OF A PLATFORM CONSISTING OF PRECAST/PRESTRESSED VOIDED DECKS WITH A TOPPING SLAB SPANNING 42-FT ON AVERAGE ON DRILLED SHAFT SUPPORTED BENTS. NO CHANGE TO USE, EGRESS OR OCCUPANCY. SEE COMMENTManhattan · 2026-07-15$153,912,235
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 York County (Manhattan), NY came in between $11,500 and $200,000. We exclude permits under $1,000, jobs filed as whole-house construction, and counties whose building departments don't reliably report valuations.