License tenure
8.6 yrs
CA General Contractor avg: 17 yrs
Find pros · SAN FRANCISCO, CA
BC
general contractor
BLOCK12 CONSTRUCTION
Trust score 25
Active licenseUnclaimed listing
BLOCK12 CONSTRUCTION - General Contractor in SAN FRANCISCO, CA
About this business
Property owners in SAN FRANCISCO, San Francisco County (94158) and nearby California communities hire BLOCK12 CONSTRUCTION for permitted General Contractor projects.
GC projects in SAN FRANCISCO range from kitchen refreshes to full second-story builds. State classification on file: B.
Seismic and energy code updates often affect remodel scope in SAN FRANCISCO.
BLOCK12 CONSTRUCTION holds CA active license 1033146, backed by a $25,000 contractor bond, with records dating to 2017 (9 years on file) Licensing is tracked through the Contractors State License Board (CSLB).. Current expiration: 2028-02-29.
Phone on file: (415) 508-4220. Compare insurance certificates and references alongside license verification.
general contractor
CA General Contractor market
154K
Active licensed contractors statewide
Bond on file (state data)
$25,000
State avg: $24,994
Trust score
25
Based on license status, bond, and profile signals
SAN FRANCISCO market
2,743
Active General Contractor contractors locally
Market insights
Newer General Contractor license than most in CA.
Compared with other General Contractor contractors in SAN FRANCISCO, this is a relatively newer license.
100% of active General Contractor contractors in CA have bond amounts in our dataset (CSLB Contractor's Bond (CBAmount)).
BLOCK12 CONSTRUCTION is one of 154,344 active General Contractor license records we track in CA.
How this pro compares
License tenure vs state average
BLOCK12 CONSTRUCTION's license is 8.2 years below average for General Contractor contractors in CA.
Bond amount vs state average
California CSLB master file includes contractor bond amounts for nearly all licenses.
License journey
- License issuedNovember 20, 2017
8.6 yrs of operating history on record
- Data verifiedMay 29, 2026
License record refreshed 14 days ago
- License expirationFebruary 29, 2028
Approximately 1.7 yrs until expiration
License details
| License # | 1033146 |
|---|---|
| State | CA |
| County | San Francisco |
| Issued | November 20, 2017 |
| Expires | February 29, 2028 |
| Bond | $25,000 |
| Last verified | May 29, 2026 |
Synced from California Contractors State License Board bulk licensing data · last checked May 29, 2026. Confirm status with the state board before hiring.
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