California › San Francisco County › HVAC in San Francisco › Q4 MECHANICAL CORPORATION
Listed from CSLB's public license file · unclaimed
Q4 MECHANICAL CORPORATION
San Francisco, CA 94110 · San Francisco County · Corporation
✓License Verified CSLB file · Oct 20, 2026
Licensed for C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC), C-43 Sheet Metal. Double-check this license at CSLB → (enter #1006003 on CSLB's Check a License page)
License facts from CSLB
| License number | #1006003 |
| Status in CSLB file | ● CLEAR (active) |
| Pending suspension | None in CSLB file |
| Classifications | C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC)C-43 Sheet Metal |
| Issued / expires | Jul 30, 2015 · expires Oct 31, 2027 |
| Business type | Corporation |
| Phone on file | (415) 251-3091 |
| Contractor's bond | $25,000 on file · surety: TRAVELERS CASUALTY AND SURETY COMPANY OF AMERICA · effective May 1, 2024 |
| Workers' compensation | Policy on file with STATE COMPENSATION INSURANCE FUND, expires Nov 18, 2026 |
| Checked against CSLB file | Oct 20, 2026 |
Source: CSLB Public Data Portal, License Master file dated Oct 20, 2026. Status can change at any time, so confirm it with CSLB's Instant License Check before you sign. A CSLB record doesn't show general liability insurance, so ask for a certificate. The License Verified stamp means the license was active in that day's file with no CSLB flag on it. It isn't a rating, a recommendation, or a promise about workmanship.