M1 Mechanical CORP, C-20 HVAC Contractor in Castro Valley, CA
M1 Mechanical CORP operating as a corporation holds an active California contractor license (CSLB #1129897), valid through Dec 31, 2026. First issued in 2024, the license has been on the CSLB roster for 2 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with Platte River Insurance Company and a previously-filed workers' compensation policy with Oak River Insurance Company that is no longer active. The business is based in Castro Valley, in Alameda County, California.
- License Number
- 1129897
- Issued
- Dec 3, 2024
- Status
- CLEAR
- Expires
- Dec 31, 2026
- Entity
- Corporation
- Surety
- Platte River Insurance Company
- Bond Number
- PR2764810
- Effective
- Nov 28, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Oak River Insurance Company
- Policy Number
- INWC614219
- Effective
- May 1, 2025
- Expires
- May 1, 2026
This contractor has a compliance issue in its public CSLB record:
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is M1 Mechanical CORP licensed in California?
Yes. M1 Mechanical CORP holds California Contractors State License Board license number 1129897, which is active and in good standing. The license was first issued on December 3, 2024. It is valid through December 31, 2026.
What does M1 Mechanical CORP specialize in?
M1 Mechanical CORP is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is M1 Mechanical CORP headquartered?
M1 Mechanical CORP is headquartered at 4565 Edwards Lane, Castro Valley, CA 94546, in Alameda County, California.
Does M1 Mechanical CORP have an active surety bond on file with CSLB?
Yes. M1 Mechanical CORP has an active California contractor surety bond filed with Platte River Insurance Company.
Does M1 Mechanical CORP carry workers' compensation coverage?
M1 Mechanical CORP has a previously-filed workers' compensation policy with Oak River Insurance Company that is no longer active.
How do I verify M1 Mechanical CORP's contractor license?
You can verify M1 Mechanical CORP's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1129897.
- License issuedDec 3, 2024
- WC coverage startsMay 1, 2025
- Bond activeNov 28, 2025
- WC expiredMay 1, 2026
- License expiresDec 31, 2026
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