Checkmate Mechanical LLC, C-4 Boiler, Hot Water Heating and Steam Fitting Contractor in Vallejo, CA
Checkmate Mechanical LLC operating as a limited liability holds an active California contractor license (CSLB #1146400), valid through Nov 30, 2027. First issued in 2025, the license has been on the CSLB roster for 1 year. It carries a single CSLB classification: C-4 — Boiler, Hot Water Heating and Steam Fitting Contractor. Records show an active surety bond on file with Business Alliance Insurance Company and active workers' compensation coverage from State Compensation Insurance Fund. The business is based in Vallejo, in Solano County, California.
- License Number
- 1146400
- Issued
- Nov 17, 2025
- Status
- CLEAR
- Expires
- Nov 30, 2027
- Entity
- Limited Liability
- Surety
- Business Alliance Insurance Company
- Bond Number
- G150729168651
- Effective
- Jul 28, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 9391694
- Effective
- Dec 9, 2025
- Expires
- Dec 9, 2026
Recently licensed: the CSLB license is active and in good standing, issued within the last 2 years.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Checkmate Mechanical LLC licensed in California?
Yes. Checkmate Mechanical LLC holds California Contractors State License Board license number 1146400, which is active and in good standing. The license was first issued on November 17, 2025. It is valid through November 30, 2027.
What does Checkmate Mechanical LLC specialize in?
Checkmate Mechanical LLC is licensed for one CSLB classification: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor.
Where is Checkmate Mechanical LLC headquartered?
Checkmate Mechanical LLC is headquartered at P O Box 4095, Vallejo, CA 94590, in Solano County, California.
Does Checkmate Mechanical LLC have an active surety bond on file with CSLB?
Yes. Checkmate Mechanical LLC has an active California contractor surety bond filed with Business Alliance Insurance Company.
Does Checkmate Mechanical LLC carry workers' compensation coverage?
Yes. Checkmate Mechanical LLC carries active workers' compensation coverage through State Compensation Insurance Fund.
How do I verify Checkmate Mechanical LLC's contractor license?
You can verify Checkmate Mechanical LLC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1146400.
- Bond activeJul 28, 2025
- License issuedNov 17, 2025
- WC coverage startsDec 9, 2025
- WC expiresDec 9, 2026
- License expiresNov 30, 2027
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