Siem Bill Construction, B General Building Contractor in Castro Valley, CA
Siem Bill Construction operating as a sole owner holds an active California contractor license (CSLB #866184), valid through Oct 31, 2027. First issued in 2005, the license has been on the CSLB roster for 21 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
- 866184
- Issued
- Oct 21, 2005
- Status
- CLEAR
- Expires
- Oct 31, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC6344678
- Effective
- Jan 1, 2023
- 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 Siem Bill Construction licensed in California?
Yes. Siem Bill Construction holds California Contractors State License Board license number 866184, which is active and in good standing. The license was first issued on October 21, 2005. It is valid through October 31, 2027.
What does Siem Bill Construction specialize in?
Siem Bill Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Siem Bill Construction headquartered?
Siem Bill Construction is headquartered at 5062 Camino Alta Mira, Castro Valley, CA 94546, in Alameda County, California.
Does Siem Bill Construction have an active surety bond on file with CSLB?
Yes. Siem Bill Construction has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Siem Bill Construction carry workers' compensation coverage?
Siem Bill Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Siem Bill Construction's contractor license?
You can verify Siem Bill Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=866184.
- License issuedOct 21, 2005
- Bond activeJan 1, 2023
- WC coverage startsOct 2, 2025
- License expiresOct 31, 2027
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