Diamante Construction, B General Building Contractor in Downey, CA
Diamante Construction operating as a sole owner holds an active California contractor license (CSLB #278217), valid through Jan 31, 2028. First issued in 1972, the license has been on the CSLB roster for 54 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 Downey, in Los Angeles County, California.
- License Number
- 278217
- Issued
- Aug 4, 1972
- Status
- CLEAR
- Expires
- Jan 31, 2028
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800229869
- Effective
- Jan 5, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jan 11, 2026
- 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 Diamante Construction licensed in California?
Yes. Diamante Construction holds California Contractors State License Board license number 278217, which is active and in good standing. The license was first issued on August 4, 1972. It is valid through January 31, 2028.
What does Diamante Construction specialize in?
Diamante Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Diamante Construction headquartered?
Diamante Construction is headquartered at 9220 Muller St, Downey, CA 90241, in Los Angeles County, California.
Does Diamante Construction have an active surety bond on file with CSLB?
Yes. Diamante Construction has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Diamante Construction carry workers' compensation coverage?
Diamante Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Diamante Construction's contractor license?
You can verify Diamante Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=278217.
- License issuedAug 4, 1972
- Bond activeJan 5, 2026
- WC coverage startsJan 11, 2026
- License expiresJan 31, 2028
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