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Basement finishing contractors in San Diego

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

Last updated

Basic finish
$28,000 – $55,500framing, drywall, flooring
Full finish with bath
$55,500 – $111,000bathroom, wet bar
Cost per sq ft
$39 – $89finished area
San Diego vs US
+11%above the US median

Licensing in California. California contractors need a CSLB license for most remodeling work. Check the license number and its bond on the CSLB site before you sign.

Number 1: San Diego Basement Remodeling & Renovation

5.0(53)out of 5, from 53 reviewson GoogleSan Diego, CA

San Diego homeowners can bring in DS Legend for basement remodeling and renovation, with planning and design worked out before construction begins. Projects start with an in-home consultation, and the company's past work also includes kitchen remodels.

(858) 384-6781 4848 Ronson Ct Ste G, San Diego, CA 92111

Number 2: Azar Builders

5.0(8)out of 5, from 8 reviewson GoogleSan Diego

Azar Builders adds basements to existing homes in San Diego, taking new basements from design through construction. The company also updates and finishes basements that are already in place and handles waterproofing for below-grade spaces.

(619) 454-2348

Number 3: Cms General Contractor

5.0(8)out of 5, from 8 reviewson GoogleAlpine, CA

CMS Property Maintenance Inc. finishes basements across the San Diego area, converting unused lower levels into additional living space for homeowners. Projects begin with a consultation to plan the remodel, and the company works out of Alpine, California.

(619) 471-6415 1665 Star Valley Rd, Alpine, CA 91901

Number 4: Jackson Design and Remodeling

4.6(79)out of 5, from 79 reviewson GoogleSan Diego, CA

Jackson Design and Remodeling is a design-build firm in San Diego, California.

(619) 442-6125 4797 Mercury St, San Diego, CA 92111

Number 5: Basements Ystems

No Google reviews yetSan Diego

Basement Systems handles basement finishing work in the San Diego area.

Number 6: Bessell Design

No Google reviews yetSan Diego

San Diego basement remodels from Bessell Design & Construction add insulation, custom storage and entertainment areas to turn underused lower levels into living space. Each project begins with an assessment and consultation before design and construction move forward.

Number 7: Willow Bend Basement

No Google reviews yetSan Diego

Serving San Diego homeowners, Willow Bend Basement converts unfinished basements into living space, handling framing and insulation. Its service list also covers basement waterproofing, kitchen and bathroom remodels, home additions and flooring installation, for projects ranging from a single room to a full floor.

Number 8: Basement Finishing Experts

No Google reviews yetSan Diego

This San Diego company works only on basements, finishing and remodeling unused lower levels into new rooms. It covers San Diego, La Mesa and El Cajon, and takes care of the permit and inspection process as part of each project.

Number 9: Pmc Construction Co

No Google reviews yetSan Diego

PMC Construction remodels basements in San Diego, providing both design and construction. Its crews convert unfinished or underused lower levels into extra living space, adding bedrooms, home offices, bathrooms and home gyms.

Number 10: Huff Harrington

No Google reviews yetSan Diego

Huff Harrington is a basement finishing contractor in the San Diego area.

What basement finishing contractors charge in San Diego

In San Diego, a basic finish typically costs $28,000 – $55,500. Remodeling labor in San Diego runs about 11% 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 California or San Diego 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 san diego", 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 San Diego: 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.