How much does it cost to finish a basement in New York, NY?
Finishing a basement in New York, NY typically runs $30–$75 per square foot — most full basements land between $25,000 and $65,000. Adding a bathroom is the biggest extra, followed by egress windows, which building code requires for any basement bedroom. Moisture comes first: finishing over a damp basement is money buried twice.
What you can check yourself
- Fix water before finishes: watch the basement through a rainy season, or fix grading and gutters first — framing over seepage guarantees a redo.
- Ask whether the quote includes permits and an egress window if any room could be a bedroom — unpermitted basement 'bedrooms' hurt resale.
- Price the bathroom separately and honestly; it's often 25% of the whole budget.
Typical cost
Typical in New York, NY: basic finish $30–$50/sq ft; with a bathroom and better finishes $50–$75/sq ft. Egress window installation $3,000–$5,500 each.
When to call a pro
A licensed contractor with permits — a basement bedroom without egress is a code and safety issue, and unpermitted finished space usually has to be disclosed (or discounted) when you sell.
General Contractor pros in New York, NY
- EASY LIVING · 426 GREENWICH ST, NEW YORK, NY · 2122265140
- HIP HING CONSTRUCTION CO., INC. · 2 MOTT STREET, NEW YORK, NY · 2122331752
- D.H.E. COMPANY, INC. · 37 CANAL STREET, NEW YORK, NY · (212) 228-8005
- METROPOLITAN LOCKSMITH INC. · 165 7TH AVE, NEW YORK, NY · 2129890222
- G.V.S. CONTRACTING INC. · 505 HENRY ST, BROOKLYN, NY · 7182609044
- MANCINI CONSTRUCTION CORP. · 600 UNION AVENUE, BROOKLYN, NY · 7183883465
- PREMIER ROOFING CO., INC. · 905 ATLANTIC AVE, BROOKLYN, NY · (718) 638-3711
- 3 L. BROS.CORP. · 130 BAYARD ST, BROOKLYN, NY · 7183874950
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Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.