Contractor License Proof

Kolby Development Company

Licensed

Verified against CSLB on · View on CSLB

License details

License number
530673
Status
Active
Classifications
B · General Building
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
May 20, 1988 – May 31, 2028

Business

  • (415) 407 6391 (CSLB public record)
  • 1229 QUINTARA STREET, San Francisco, CA 94116San Francisco County

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Frequently asked questions

Is Kolby Development Company licensed in California?

Yes. Kolby Development Company holds an active California state contractor license (CSLB #530673), verified against the CSLB public record on June 17, 2026.

What is Kolby Development Company's CSLB license number?

Kolby Development Company's California contractor license number is 530673. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.

What kind of work is Kolby Development Company licensed for?

Kolby Development Company is classified under General Building (B) by the CSLB.

How do I verify Kolby Development Company's license myself?

Look up license #530673 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.

Verify it yourself: How to verify a California contractor license · Look up #530673 on CSLB

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See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.