712 California HVAC Contractors Are Working on an Expired License
An analysis of all 12,182 HVAC contractor licenses published by the California Contractors State License Board, as of August 18, 2026.
CSLB republishes its full licensee file daily. We loaded every HVAC contractor record and compared the expiration date on each against today's date. 712 licenses, 5.8% of the trade, have already lapsed.
Counties with the highest expiry rate
Ranked among counties with at least 50 licensed HVAC contractors.
| County | Licensed | Expired | Rate |
|---|---|---|---|
| Kern County | 176 | 22 | 12.5% |
| Solano County | 90 | 9 | 10.0% |
| Merced County | 64 | 6 | 9.4% |
| San Luis Obispo County | 66 | 6 | 9.1% |
| Fresno County | 198 | 16 | 8.1% |
| San Joaquin County | 161 | 12 | 7.5% |
| Ventura County | 192 | 14 | 7.3% |
| Alameda County | 185 | 13 | 7.0% |
| Contra Costa County | 245 | 17 | 6.9% |
| Placer County | 136 | 9 | 6.6% |
Method
Source file: CSLB public license listing, downloaded
August 18, 2026. A license counts as expired when its published expiration
date is earlier than the date of analysis. We do not adjust for grace periods, so a licensee
who renewed today may still appear here until the next daily file. Counties with fewer than
50 licensees are excluded from the ranking to avoid small-sample noise.