CARSTENS CONSTRUCTION CO
License
- Status
- CLEAR
- First issued
- May 12, 1975
- Expires
- March 31, 2028
- Entity
- Corporation
- Address of record
- 1206-A WEST HILLSDALE BL, San Mateo, CA 94403
- Phone of record
- (650) 349 0431
Contractor bond
- Surety
- NATIONWIDE MUTUAL INSURANCE COMPANY
- Bond number
- 7901280658
- Amount
- $25,000
- Effective
- September 1, 2025
Workers’ compensation
This contractor has certified to the state that they have no employees, so they carry no workers’ compensation policy. The exemption covers only the license holder. If anyone else works on your project — a crew, a helper, a day laborer — they are not covered, and an injury on your property can become your liability. Ask who will physically be on site.
Are they licensed for your job?
A California contractor may only contract for work their classification covers. Pick the job and this reads the license on file against it.
Licensed to perform
A contractor may only contract for work within their classifications. See all 303 licensed general building contractors in San Mateo.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| CARSTENS CHRIS ALF | Responsible Managing Officer | May 1, 1990 | Current |
| CARSTENS ALF | Responsible Managing Officer/Chief Executive Officer/President | May 12, 1975 | May 1, 1990 |
| CARSTENS CAROLYN | Officer | May 12, 1975 | May 1, 1990 |
| CARSTENS CHRIS ALF | Responsible Managing Officer | November 24, 1999 | January 1, 2004 |
Verified status badge
Put this on your website or in a bid packet. It reads the state’s record live every time someone loads it, so it is never a screenshot of a good day. Free, and you don’t need to claim this listing to use it.
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<img src="https://bookofbuilders.com/badge/305427.svg" alt="CARSTENS CONSTRUCTION CO — California contractor license #305427 status, verified against CSLB records" width="268" height="76">
</a>The badge shows whatever the CSLB record says — including a suspension or lapsed coverage. There is no paid version and no way to change what it displays. That is what makes it worth showing. The same data as JSON if you’d rather build your own.
Is this your license?
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Source: California Contractors State License Board public records. Coverage lapse is evaluated against today’s date; all other fields reflect the latest weekly CSLB file. Confirm at the CSLB’s official record before signing a contract.