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Black Diamond Heating and Air Conditioning INC: CSLB License #931418
Source: CSLB public data · Updated November 1, 2026 · CSLB's record
- Primary status: Contr Bond Susp
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Suspended because CSLB has no $25,000 contractor's bond on file, so the license can't be used for contracting until one is processed.
License details
- License number
- 931418
- Primary status
- Contr Bond Susp · what this means
- Business type
- Corporation
- Issued
- April 16, 2009 (17 years)
- Expires
- April 30, 2027
- Classifications
- C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor
C-38 Refrigeration Contractor
C-4 Boiler, Hot Water Heating and Steam Fitting Contractor
C-43 Sheet Metal Contractor - Mailing address
- 2063 Main St #425, Oakley, CA, 94561
- Phone
- (925) 754-3609
Workers' compensation
- Type
- Workers' Compensation Insurance
- Insurer
- Markel American Insurance Company
- Policy number
- MWC0006393
- Effective
- July 15, 2026
- Expires
- July 15, 2027
Confirm coverage with CSLB's insurer search. How to check workers' comp.
Contractor's bond
- Surety
- American Contractors Indemnity Company
- Bond number
- 100067974
- Amount
- $25,000
- Effective
- January 1, 2023
- Cancelled
- September 5, 2026
Bond of qualifying individual
CSLB's public file lists no qualifier bond for this license. One isn't required when the qualifier owns at least 10% of the business, and some qualifier bonds appear only on CSLB's record.
Status history
No changes recorded since we began tracking this license on November 1, 2026. We compare every weekly CSLB file and log changes to status, bonds, workers' comp and classifications here.
Related
- Licensed HVAC contractors in Oakley
- Licensed contractors in Oakley
- Contractors in Contra Costa County
- What "Contr Bond Susp" means
- How to check a contractor license
Data: CSLB Public Data Portal, file dated November 1, 2026. Status can change at any time. Verify on CSLB's Instant License Check. This site is not a consumer reporting agency under the FCRA; don't use it for employment, credit, insurance or housing decisions about an individual.