Big Hammer Construction, B General Building Contractor in Kensington, CA
Big Hammer Construction operating as a sole owner holds an active California contractor license (CSLB #768338), valid through Sep 30, 2027. First issued in 1999, the license has been on the CSLB roster for 27 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Kensington, in Contra Costa County, California.
- License Number
- 768338
- Issued
- Sep 7, 1999
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800231146
- Effective
- Feb 19, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Oct 14, 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 Big Hammer Construction licensed in California?
Yes. Big Hammer Construction holds California Contractors State License Board license number 768338, which is active and in good standing. The license was first issued on September 7, 1999. It is valid through September 30, 2027.
What does Big Hammer Construction specialize in?
Big Hammer Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Big Hammer Construction headquartered?
Big Hammer Construction is headquartered at 70 Eureka Avenue, Kensington, CA 94707, in Contra Costa County, California.
Does Big Hammer Construction have an active surety bond on file with CSLB?
Yes. Big Hammer Construction has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Big Hammer Construction carry workers' compensation coverage?
Big Hammer Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Big Hammer Construction's contractor license?
You can verify Big Hammer Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=768338.
- License issuedSep 7, 1999
- WC coverage startsOct 14, 2025
- Bond activeFeb 19, 2026
- License expiresSep 30, 2027
- Parshall Construction#242928Danville·B General Building Contractor
- Doyle Michael J#240251Danville·B General Building Contractor
- Seeno Albert D Construction CO#260260Concord·A General Engineering Contractor
- Siino Joseph S#254915Pittsburg·B General Building Contractor
- Busby James J#255487Concord·A General Engineering Contractor
- S J N Construction#250677Discovery Bay·B General Building Contractor
- Lescure Company INC#248204Concord·A General Engineering Contractor
- American Refrigerant Services INC#246018Concord·B General Building Contractor
Working a California job with Big Hammer Construction, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Big Hammer Construction? Claim or correct this profile