1 Backflow Plumbing, B General Building Contractor in San Francisco, CA
1 Backflow Plumbing operating as a corporation holds California contractor license #807692, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 2002, the license has been on the CSLB roster for 24 years. It carries 2 CSLB classifications: B General Building Contractor and C-36 Plumbing Contractor. Records show an active surety bond on file with Hudson Insurance Company and a previously-filed workers' compensation policy with Technology Insurance Company INC that is no longer active. The business is based in San Francisco, in San Francisco County, California.
- License Number
- 807692
- Issued
- May 6, 2002
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Corporation
- Surety
- Hudson Insurance Company
- Bond Number
- 30108638
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Technology Insurance Company INC
- Policy Number
- TWC4240391
- Effective
- Mar 16, 2025
- Expires
- Mar 16, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is 1 Backflow Plumbing licensed in California?
1 Backflow Plumbing previously held California Contractors State License Board license number 807692, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 6, 2002.
What does 1 Backflow Plumbing specialize in?
1 Backflow Plumbing is licensed for 2 CSLB classifications: B General Building Contractor and C-36 Plumbing Contractor.
Where is 1 Backflow Plumbing headquartered?
1 Backflow Plumbing is headquartered at 5635 Anza St 3, San Francisco, CA 94121, in San Francisco County, California.
Does 1 Backflow Plumbing have an active surety bond on file with CSLB?
Yes. 1 Backflow Plumbing has an active California contractor surety bond filed with Hudson Insurance Company.
Does 1 Backflow Plumbing carry workers' compensation coverage?
1 Backflow Plumbing has a previously-filed workers' compensation policy with Technology Insurance Company INC that is no longer active.
How do I verify 1 Backflow Plumbing's contractor license?
You can verify 1 Backflow Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=807692.
- License issuedMay 6, 2002
- Bond activeJan 1, 2023
- WC coverage startsMar 16, 2025
- WC expiredMar 16, 2026
- License expiredMay 31, 2026
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