Platt C M, B General Building Contractor in Piedmont, CA
Platt C M operating as a sole owner holds an active California contractor license (CSLB #363927), valid through Nov 30, 2027. First issued in 1978, the license has been on the CSLB roster for 48 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Piedmont, in Alameda County, California.
- License Number
- 363927
- Issued
- Sep 29, 1978
- Status
- CLEAR
- Expires
- Nov 30, 2027
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 67414181
- Effective
- Mar 22, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Oct 2, 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 Platt C M licensed in California?
Yes. Platt C M holds California Contractors State License Board license number 363927, which is active and in good standing. The license was first issued on September 29, 1978. It is valid through November 30, 2027.
What does Platt C M specialize in?
Platt C M is licensed for one CSLB classification: B General Building Contractor.
Where is Platt C M headquartered?
Platt C M is headquartered at 203 Magnolia Avenue, Piedmont, CA 94610, in Alameda County, California.
Does Platt C M have an active surety bond on file with CSLB?
Yes. Platt C M has an active California contractor surety bond filed with Western Surety Company.
Does Platt C M carry workers' compensation coverage?
Platt C M reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Platt C M's contractor license?
You can verify Platt C M's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=363927.
- License issuedSep 29, 1978
- Bond activeMar 22, 2025
- WC coverage startsOct 2, 2025
- License expiresNov 30, 2027
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