Black Mammoth Concrete INC
Black Mammoth Concrete INC operating as a corporation is licensed in California under CSLB number 1133805. The license was first issued in 2025, putting the business at 1 year on the active CSLB roster. It carries a single CSLB classification: C-8 — Concrete Contractor. Records show an active surety bond on file with Nationwide Mutual Insurance Company and active workers' compensation coverage from Markel Insurance Company. The business is based in San Bernardino, in San Bernardino County, California.
San Bernardino, CA 92410
- License Number
- 1133805
- Issued
- Mar 3, 2025
- Status
- CLEAR
- Expires
- Mar 31, 2027
- Entity
- Corporation
- Surety
- Nationwide Mutual Insurance Company
- Bond Number
- 7901210124
- Effective
- Feb 7, 2026
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Markel Insurance Company
- Policy Number
- MWC0234874
- Effective
- Feb 6, 2026
- Expires
- Feb 6, 2027
This contractor warrants a closer look before contracting:
- License issued less than 2 years ago
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Black Mammoth Concrete INC licensed in California?
Yes. Black Mammoth Concrete INC holds California Contractors State License Board license number 1133805. The license was first issued on March 3, 2025. It is valid through March 31, 2027.
What does Black Mammoth Concrete INC specialize in?
Black Mammoth Concrete INC is licensed for one CSLB classification: C-8 Concrete Contractor.
Where is Black Mammoth Concrete INC headquartered?
Black Mammoth Concrete INC is headquartered at 222 South Rancho Ave Spc 37, San Bernardino, CA 92410, in San Bernardino County, California.
Does Black Mammoth Concrete INC have an active surety bond on file with CSLB?
Yes. Black Mammoth Concrete INC has an active California contractor surety bond filed with Nationwide Mutual Insurance Company.
Does Black Mammoth Concrete INC carry workers' compensation coverage?
Yes. Black Mammoth Concrete INC carries active workers' compensation coverage through Markel Insurance Company.
How do I verify Black Mammoth Concrete INC's contractor license?
You can verify Black Mammoth Concrete INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1133805.
- License issuedMar 3, 2025
- WC coverage startsFeb 6, 2026
- Bond activeFeb 7, 2026
- WC expiresFeb 6, 2027
- License expiresMar 31, 2027
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