T J Nelsen Marine Service Co
Sausalito, CA· about 12.7 mi from the city reference point
- Foundation repair
- Service area (estimated)
CSLB License Master List: 549411 · source status “CLEAR” · checked October 16, 2026
San Mateo County, California
Foundation Repair Contractors near Colma, CA
6 listed businesses serve Colma, California. 1 of them has a checked CSLB record and dated service evidence; the others are listings from Overture Maps open data, each labelled with what is and isn't confirmed. Service areas and distances are estimates from city-level locations, not street addresses.
Businesses serving Colma
S.L Foundation Repair & Concrete Contractor
Pleasant Hill, CA· about 28.1 mi from the city reference point
- Service area (estimated)
- Listing from Overture Maps
- Services not verified
No state credential record attached. Check local licensing requirements.
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
Bay Area Underpinning
Sunnyvale, CA· about 30.8 mi from the city reference point
- Service area (estimated)
- Listing from Overture Maps
- Services not verified
No state credential record attached. Check local licensing requirements.
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
Deep Foundation Services
Los Gatos, CA· about 41.1 mi from the city reference point
- Service area (estimated)
- Listing from Overture Maps
- Services not verified
CSLB License Master List: 995494 · source status “CLEAR” · checked October 16, 2026
Place data: Overture Maps Foundation (Meta), CDLA-Permissive-2.0
Underpinning Specialist, Inc.
San Jose, CA· about 43.8 mi from the city reference point
- Service area (estimated)
- Listing from Overture Maps
- Services not verified
CSLB License Master List: 1050045 · source status “CLEAR” · checked October 16, 2026
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
Bay Area Underpinning
Fairfield, CA· about 46.5 mi from the city reference point
- Foundation repair
- Service area (estimated)
- Listing from Overture Maps
No state credential record attached. Check local licensing requirements.
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
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Colma listings at a glance
- Nearest serving business location: about 12.7 miles from the city reference point.
- Foundation repair: 2 businesses with dated evidence.
Nearby cities
All of San Mateo County · All California counties
Checking a California contractor's license
California contractors are licensed by the CSLB. A license record shows its classifications, status and bond and workers' compensation filings. Check which classification covers your specific foundation or waterproofing scope.
Look up the business in the CSLB public search before you sign. A credential shows legal standing at most. It does not show that a business does foundation or waterproofing work, so we show separate, dated service evidence where we have it. Neither is a rating of workmanship. How we verify listings.