M1 Mechanical Corp
Castro Valley · Alameda County · CA
VERIFIED
Bestopedia verdict
California’s contractor board lists M1 Mechanical Corp in CLEAR standing. A contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 30 / 30
- Years licensed
- 1.6 / 20
- Contractor bond
- 20 / 20
- Workers' comp
- 20 / 20
- Business structure
- 10 / 10
The verified record
- CSLB license
- #1129897 verify on CSLB ↗
- Classifications
- C-20
- Years licensed
- 1.6 years since 12/03/2024
- Contractor bond
- $25,000 PLATTE RIVER INSURANCE COMPANY
- Workers’ comp
- Current OAK RIVER INSURANCE COMPANY
- Business type
- Corporation
- Qualifying principal
- Sean Blair, Siegert Sean Blair Shervais
- Address of record
- 4565 Edwards Lane, Castro Valley, CA 94546
Frequently Asked Questions
Is M1 Mechanical Corp a licensed HVAC contractor in California?
Yes. M1 Mechanical Corp holds California CSLB contractor license #1129897 with a C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) classification. Current CSLB status: CLEAR.
What work is M1 Mechanical Corp licensed to perform?
License #1129897 carries C-20 (Warm-Air Heating, Ventilating and Air-Conditioning).
Is M1 Mechanical Corp bonded?
Yes. M1 Mechanical Corp carries contractor's bond #PR2764810 for $25,000 through PLATTE RIVER INSURANCE COMPANY.
Does M1 Mechanical Corp carry workers' compensation insurance?
Yes. Workers' compensation insurance is on file with OAK RIVER INSURANCE COMPANY, with a policy expiration of 05/01/2027.
How long has M1 Mechanical Corp held its contractor license?
License #1129897 was originally issued on 12/03/2024, approximately 2 years ago (as of July 2026).
Where is M1 Mechanical Corp located?
M1 Mechanical Corp is based in Castro Valley, Alameda County, CA 94546.