Public CSLB records

Delsur Builders INC, B General Building Contractor in South San Francisco, CA

License #878636·Corporation·South San Francisco, San Mateo County
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Summary

Delsur Builders INC operating as a corporation holds California contractor license #878636, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2006, the license has been on the CSLB roster for 20 years. It carries 2 CSLB classifications: B General Building Contractor and C-9 Drywall Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and active workers' compensation coverage from State Compensation Insurance Fund. The business is based in South San Francisco, in San Mateo County, California.

Business Information
Address
P O Box 1135
South San Francisco, CA 94083
License Details & Classifications
License Number
878636
Issued
Jun 2, 2006
Status
CLEAR
Expires
Jun 30, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
Merchants Bonding Company (mutual)
Bond Number
101562468
Effective
Jul 7, 2025
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
State Compensation Insurance Fund
Policy Number
9299222
Effective
May 28, 2021
Expires
May 28, 2027
Alert

This contractor has a compliance issue in its public CSLB record:

  • License expired
License StatusInactive / Expired
Contractor BondOn file
Workers' CompensationActive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is Delsur Builders INC licensed in California?

Delsur Builders INC previously held California Contractors State License Board license number 878636, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 2, 2006.

What does Delsur Builders INC specialize in?

Delsur Builders INC is licensed for 2 CSLB classifications: B General Building Contractor and C-9 Drywall Contractor.

Where is Delsur Builders INC headquartered?

Delsur Builders INC is headquartered at P O Box 1135, South San Francisco, CA 94083, in San Mateo County, California.

Does Delsur Builders INC have an active surety bond on file with CSLB?

Yes. Delsur Builders INC has an active California contractor surety bond filed with Merchants Bonding Company (mutual).

Does Delsur Builders INC carry workers' compensation coverage?

Yes. Delsur Builders INC carries active workers' compensation coverage through State Compensation Insurance Fund.

How do I verify Delsur Builders INC's contractor license?

You can verify Delsur Builders INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=878636.

Activity Timeline
  1. License issuedJun 2, 2006
  2. WC coverage startsMay 28, 2021
  3. Bond activeJul 7, 2025
  4. License expiredJun 30, 2026
  5. WC expiresMay 28, 2027
Other contractors in San Mateo County
California lien & payment resources

Working a California job with Delsur Builders INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.

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