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Basement finishing contractors in New York

The 10 basement finishing contractors from Google's results for New York, New York, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.

Last updated

Basic finish
$32,500 – $65,000framing, drywall, flooring
Full finish with bath
$65,000 – $130,000bathroom, wet bar
Cost per sq ft
$46 – $104finished area
New York vs US
+30%well above the US median

Licensing in New York. New York has no statewide contractor license. New York City requires a Home Improvement Contractor license from DCWP.

Number 1: Martino Construction Group

5.0(123)out of 5, from 123 reviewson GoogleRonkonkoma, NY

Martino Construction Group finishes basements for homeowners across Long Island from its Ronkonkoma office. Typical conversions turn dark, unfinished lower levels into playrooms, family TV rooms and other everyday living space.

(631) 603-6518 2155 Ocean Ave Ste a, Ronkonkoma, NY 11779

Number 2: Construct Ive Design

5.0(15)out of 5, from 15 reviewson GoogleDeer Park, NY

Constructive Design is a basement finishing contractor in Deer Park, New York.

(631) 983-4327 158 Adams St, Deer Park, NY 11729

Number 3: City Suburb Inc

4.9(209)out of 5, from 209 reviewson GoogleBrooklyn, NY

With offices in Brooklyn and Jamaica, Queens, City Suburb remodels and renovates basements into usable living areas. Its service area takes in Brooklyn, Queens, the Bronx, Manhattan, Nassau County and the rest of Long Island.

(718) 849-8999 300 Cadman Plz W suite #12035, Brooklyn, NY 11201

Number 4: Ridgewood Basement Remodeling

4.9(173)out of 5, from 173 reviewson GoogleRidgewood, NY

Timmy Handyman, LLC finishes and remodels basements in Ridgewood, Bushwick and Williamsburg, converting damp storage areas into usable rooms. The company also takes on kitchen remodeling and general handyman jobs in these neighborhoods.

(347) 506-5018 60-60 Catalpa Ave, Ridgewood, NY 11385

Number 5: Basement Finishing And Remodeling Contractor In New York

4.9(121)out of 5, from 121 reviewson GoogleBohemia, NY

Operating from Bohemia, Zavza Seal finishes and remodels basements in Brooklyn, Queens, the Bronx and on Long Island. Waterproofing against leaks and moisture is part of its service mix, and it takes on projects for both homes and businesses.

(631) 980-1800 80 Orville Dr Ste 100, Bohemia, NY 11716

Number 6: Prime Construction NY

4.8(17)out of 5, from 17 reviewson GoogleOzone Park, NY

Prime Construction NY remodels and finishes basements across the five New York City boroughs, with work also extending into New Jersey and Connecticut. Projects convert unused lower-level square footage into rooms for entertaining, relaxing, working from home or family time.

(631) 530-6243 88-08 Liberty Ave, Ozone Park, NY 11417

Number 7: NYC Home Renovations

No Google reviews yetNew York

NYC Home Renovations remodels basements in New York City. Its approach often begins with waterproofing so the lower level stays dry year-round before the rest of a basement renovation gets underway.

Number 8: American Pioneerny

No Google reviews yetNew York

American Pioneer Construction finishes basements in Croton-on-Hudson, turning cold, damp or outdated lower levels into living areas, recreation rooms or organized storage. Crews frame, insulate, hang drywall, lay flooring and add custom built-ins, working only on residential projects.

Number 9: Basement Remodeling NYC

No Google reviews yetNew York

NYC Basement Remodeling Co. finishes and waterproofs basements across the five boroughs, including egress upgrades and legal conversions. Much of its work involves brownstone and rowhouse lower levels, with attention paid to moisture and headroom.

Number 10: Lumina Construction

No Google reviews yetNew York

Lumina Construction converts unfinished or outdated basements in New York City into finished space. Common layouts include a guest bedroom with a bathroom, a home office, an entertainment room or a play area for children, up to a fully finished unit.

What basement finishing contractors charge in New York

In New York, a basic finish typically costs $32,500 – $65,000. Remodeling labor in New York runs about 30% above the US median, which accounts for most of the difference from the same project elsewhere.

How to choose between them

  • Check the license yourself. Where New York or New York licenses this work, the licensing board's own lookup confirms a license number in a minute. Do it before you sign, not after.
  • Get three bids on the same scope. Written down, split into labor, materials, allowances and anything structural. Most people compare a total against a total and end up choosing between two different projects.
  • Ask what is not included. Permits, debris removal, fixture and finish allowances, and repairs after demolition are the four that turn a cheap bid into an average one.
  • Never pay a large deposit up front. A deposit to order materials and hold a start date is normal. Half the total before anyone shows up is not.

How this list is ordered

These are the firms from Google's results for "basement finishing new york city", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.

Basement finishing contractors in New York: common questions

Can I put a bedroom in my basement?

Only with an emergency escape opening, usually an egress window of a minimum size with a window well, plus the ceiling height your local code requires. Without them it cannot legally be sold as a bedroom.