BLACK DIAMOND HEATING AND AIR CONDITIONING INC
HVAC Contractor license 931418 issued by the California Contractors State License Board. Status shown as of August 17, 2026.
This license is active. It is valid through April 30, 2027, 256 days from today, according to the most recent CSLB public file.
| License holder | BLACK DIAMOND HEATING AND AIR CONDITIONING INC |
|---|---|
| Business name | BLACK DIAMOND HEATING AND AIR CONDITIONING INC |
| License type | HVAC Contractor |
| License number | 931418 |
| Status today | Active |
| Expiration date | April 30, 2027 |
| City | Oakley |
| County of record | Contra Costa |
| Phone on file | (925) 754 3609 |
| Classifications | C4, C20, C38, C43 |
| Board status | CLEAR |
| Contractor bond | $25,000 |
| Issuing authority | California Contractors State License Board |
| First seen in public file | August 17, 2026 |
| Last confirmed | August 17, 2026 |
How to confirm this yourself
This page reproduces the CSLB public license file, which the agency republishes daily. Before you hire anyone, confirm the record at the source and ask the contractor for proof of insurance separately, since licensing and insurance are not the same thing and the state file does not cover insurance.
Verify at CSLB → File a complaint
There are 245 licensed HVAC contractors on record in Contra Costa County. Compare them all →