Block12 Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 1033146
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Covered
- License term on file
- November 20, 2017 – February 29, 2028
Business
- block12.com
- +14155084220
- 1225 4TH ST #517, San Francisco, CA 94158San Francisco County
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Frequently asked questions
Is Block12 Construction licensed in California?
Yes. Block12 Construction holds an active California state contractor license (CSLB #1033146), verified against the CSLB public record on June 17, 2026.
What is Block12 Construction's CSLB license number?
Block12 Construction's California contractor license number is 1033146. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1033146
What kind of work is Block12 Construction licensed for?
Block12 Construction is classified under General Building (B) by the CSLB.
How do I verify Block12 Construction's license myself?
Look up license #1033146 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1033146. This page reflects the CSLB public record as of June 17, 2026.
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.