T J Nelsen Marine Service Co
Sausalito, CA· about 30.9 mi from the county center
- Foundation repair
- Service area (estimated)
CSLB License Master List: 549411 · source status “CLEAR” · checked October 16, 2026
California · CSLB records
Foundation Repair Contractors in San Francisco County, California
3 listed businesses serve San Francisco County. 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 are estimated from the business location, bordering counties and permit records; ask each contractor whether they cover your address.
Businesses serving San Francisco County
S.L Foundation Repair & Concrete Contractor
Pleasant Hill, CA· about 54.5 mi from the county center
- 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 59.9 mi from the county center
- 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
Other nearby listings
These businesses are outside our estimated service area for San Francisco County. Ask whether they travel to your address.
Bay Area Underpinning
Fairfield, CA· about 65.8 mi from the county center
- Foundation repair
- Listing from Overture Maps
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 68.2 mi from the county center
- 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
Cities in San Francisco County
All California counties · California listings A–Z
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.
Request quotes for a project in San Francisco County
Describe the problem once. We review each request and pass it to up to three contractors who work near your ZIP code. Listed businesses have not all agreed to take referrals, so a match and a response are not guaranteed.
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