Contractor License Proof

Leff Design Build

Licensed

Verified against CSLB on · View on CSLB

License details

License number
521133
Status
Active
Classifications
B · General Building
Contractor bond
$25,000
Workers' comp
Covered
License term on file
November 20, 1987 – November 30, 2027

Business

  • (707) 823 4899 (CSLB public record)
  • 6791 SEBASTOPOL AVE, Sebastopol, CA 95472Sonoma County

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Frequently asked questions

Is Leff Design Build licensed in California?

Yes. Leff Design Build holds an active California state contractor license (CSLB #521133), verified against the CSLB public record on June 17, 2026.

What is Leff Design Build's CSLB license number?

Leff Design Build's California contractor license number is 521133. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=521133

What kind of work is Leff Design Build licensed for?

Leff Design Build is classified under General Building (B) by the CSLB.

How do I verify Leff Design Build's license myself?

Look up license #521133 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=521133. 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.