M B R, B General Building Contractor in Castro Valley, CA
M B R operating as a sole owner holds an active California contractor license (CSLB #457961), valid through Sep 30, 2027. First issued in 1984, the license has been on the CSLB roster for 42 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Castro Valley, in Alameda County, California.
- License Number
- 457961
- Issued
- Jun 11, 1984
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100083775
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Sep 22, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is M B R licensed in California?
Yes. M B R holds California Contractors State License Board license number 457961, which is active and in good standing. The license was first issued on June 11, 1984. It is valid through September 30, 2027.
What does M B R specialize in?
M B R is licensed for one CSLB classification: B General Building Contractor.
Where is M B R headquartered?
M B R is headquartered at 4965 Kathleen Avenue, Castro Valley, CA 94546, in Alameda County, California.
Does M B R have an active surety bond on file with CSLB?
Yes. M B R has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does M B R carry workers' compensation coverage?
M B R reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify M B R's contractor license?
You can verify M B R's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=457961.
- License issuedJun 11, 1984
- Bond activeJan 1, 2023
- WC coverage startsSep 22, 2025
- License expiresSep 30, 2027
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