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Basement finishing contractors in Boston

The 1 basement finishing contractors from Google's results for Boston, Massachusetts, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.

Last updated

Basic finish
$29,500 – $59,000framing, drywall, flooring
Full finish with bath
$59,000 – $118,000bathroom, wet bar
Cost per sq ft
$41 – $94finished area
Boston vs US
+18%well above the US median

Licensing in Massachusetts. Massachusetts requires Home Improvement Contractor (HIC) registration, and structural work needs a Construction Supervisor License (CSL).

Your Guide to Finding the Best Basement Finishing ...

No Google reviews yetBoston

Basement Finishing of Boston focuses on finishing basements for homeowners in Greater Boston. Typical projects convert underused lower levels into family rooms, home offices or guest suites for visiting relatives.

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What basement finishing contractors charge in Boston

In Boston, a basic finish typically costs $29,500 – $59,000. Remodeling labor in Boston runs about 18% 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 Massachusetts or Boston 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 boston", 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 Boston: 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.