T J Nelsen Marine Service Co
Sausalito, CA· about 8.5 mi from the city reference point
- Foundation repair
- Based in Marin County
CSLB License Master List: 549411 · source status “CLEAR” · checked October 16, 2026
Marin County, California
Foundation Repair Contractors near San Rafael, CA
6 listed businesses serve San Rafael, California, 1 based in Marin County and 1 within 10 miles. 2 of them have 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 San Rafael
S.L Foundation Repair & Concrete Contractor
Pleasant Hill, CA· about 23.6 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
Fairfield, CA· about 32.3 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
Bay Area Underpinning
Sunnyvale, CA· about 48.8 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
Norcal Foundation Support
Davis, CA· about 57.6 mi from the city reference point
- Foundation repair
- Service area (estimated)
CSLB License Master List: 1037019 · source status “CLEAR” · checked October 16, 2026
Deep Foundation Services
Los Gatos, CA· about 60 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
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San Rafael listings at a glance
- Nearest serving business location: about 8.5 miles from the city reference point.
- Foundation repair: 3 businesses with dated evidence.
Nearby cities
All of Marin 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.