UNIFIED MECHANICAL
License
- Status
- CLEAR
- First issued
- July 29, 2026
- Expires
- July 31, 2028
- Entity
- Sole Owner
- Address of record
- 63 VIOLA ST, South San Francisco, CA 94080
- Phone of record
- (707) 342 4646
Contractor bond
- Surety
- BUSINESS ALLIANCE INSURANCE COMPANY
- Bond number
- G19033212190
- Amount
- $25,000
- Effective
- July 7, 2026
Workers’ compensation
- Carrier
- BERKSHIRE HATHAWAY DIRECT INSURANCE COMPANY
- Policy number
- N8WC660328
- Effective
- July 8, 2026
- Expires
- July 8, 2027
Are they licensed for your job?
A California contractor may only contract for work their classification covers. Pick the job and this reads the license on file against it.
Licensed to perform
A contractor may only contract for work within their classifications. See all 16 licensed warm-air heating, ventilating and air-conditioning contractors in South San Francisco.
People on this license
| Name | Title | Since | Through |
|---|---|---|---|
| MATTSON NICHOLAS AARON | Sole Owner | July 29, 2026 | Current |
Verified status badge
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Source: California Contractors State License Board public records. Coverage lapse is evaluated against today’s date; all other fields reflect the latest weekly CSLB file. Confirm at the CSLB’s official record before signing a contract.