Amador County, California
4 listed businesses serve Ione, 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.
Sacramento, CA· about 31.5 mi from the city reference point
CSLB License Master List: 668399 · source status “CLEAR” · checked October 16, 2026
Place data: Overture Maps Foundation (BrightQuery), CDLA-Permissive-2.0
Sacramento, CA· about 31.5 mi from the city reference point
CSLB License Master List: 1135560 · source status “CLEAR” · checked October 16, 2026
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
Davis, CA· about 44.8 mi from the city reference point
CSLB License Master List: 1037019 · source status “CLEAR” · checked October 16, 2026
Fairfield, CA· about 59.2 mi from the city reference point
No state credential record attached. Check local licensing requirements.
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
These businesses are outside our estimated service area for Ione. Ask whether they travel to your address.
Pleasant Hill, CA· about 67.5 mi from the city reference point
No state credential record attached. Check local licensing requirements.
Place data: Overture Maps Foundation (Microsoft), CDLA-Permissive-2.0
All of Amador County · All California counties
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.