DOUBLE O ENGINEERING INC
General Engineering Contractor license 864693 issued by the California Contractors State License Board. Status shown as of August 17, 2026.
This license is active. It is valid through October 31, 2026, 75 days from today, according to the most recent CSLB public file.
| License holder | DOUBLE O ENGINEERING INC |
|---|---|
| Business name | DOUBLE O ENGINEERING INC |
| License type | General Engineering Contractor |
| License number | 864693 |
| Status today | Active |
| Expiration date | October 31, 2026 |
| City | San Carlos |
| County of record | San Mateo |
| Phone on file | (650) 558 8038 |
| Classifications | A, HAZ |
| Board status | CLEAR |
| Contractor bond | $25,000 |
| Issuing authority | California Contractors State License Board |
| First seen in public file | August 17, 2026 |
| Last confirmed | August 17, 2026 |
How to confirm this yourself
This page reproduces the CSLB public license file, which the agency republishes daily. Before you hire anyone, confirm the record at the source and ask the contractor for proof of insurance separately, since licensing and insurance are not the same thing and the state file does not cover insurance.
Verify at CSLB → File a complaint
There are 105 licensed general engineering contractors on record in San Mateo County. Compare them all →