GroundRosterCalifornia Geotech
License details
| License number | 812382 |
| License type | Well Drilling Contractor (C-57) |
| License status | Active, CSLB license CLEAR |
| License expires | September 30, 2026: the expiry date in our copy (as of August 17, 2026) has passed. Check with the issuing agency. |
| Based in | Castro Valley, Alameda County, California 94552 |
"Based in" is the city and county of the address on the business's license record.
What this license covers
- Drilling / construction: licensed to bore, case, complete, and plug water wells.
How to check this license
License details are indexed from state and county licensing records as of 2026-08-17. We shorten or reword some labels. The agency's record controls, and we do not vouch for the business itself. Before hiring, look up license #812382 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.
Source: California Contractors State License Board (CSLB), last checked 2026-08-17. Check current status at the state agency website.
GroundRoster is an independent publisher of public licensing records, not a government agency or licensing board. The business has not claimed this listing and is not affiliated with GroundRoster. Always confirm current license standing with the issuing state or county agency before hiring.
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