Sinclair Air Systems, C-20 HVAC Contractor in La Verne, CA
Sinclair Air Systems operating as a sole owner holds California contractor license #724978, which is currently expired (lapsed Jul 31, 2026) and not valid to contract until it is renewed. First issued in 1996, the license has been on the CSLB roster for 30 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with Philadelphia Indemnity Insurance Company and a previously-filed workers' compensation policy with Continental Casualty Company that is no longer active. The business is based in La Verne, in Los Angeles County, California.
- License Number
- 724978
- Issued
- Jul 15, 1996
- Status
- CLEAR
- Expires
- Jul 31, 2026
- Entity
- Sole Owner
- Surety
- Philadelphia Indemnity Insurance Company
- Bond Number
- PB10163409312
- Effective
- Feb 26, 2026
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Continental Casualty Company
- Policy Number
- 7039316178
- Effective
- Jun 3, 2025
- Expires
- Jun 3, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
- 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 Sinclair Air Systems licensed in California?
Sinclair Air Systems previously held California Contractors State License Board license number 724978, but the license expired on July 31, 2026 and is not currently valid. It was first issued on July 15, 1996.
What does Sinclair Air Systems specialize in?
Sinclair Air Systems is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is Sinclair Air Systems headquartered?
Sinclair Air Systems is headquartered at 1935 Mckinley Ave Ste D, La Verne, CA 91750, in Los Angeles County, California.
Does Sinclair Air Systems have an active surety bond on file with CSLB?
Yes. Sinclair Air Systems has an active California contractor surety bond filed with Philadelphia Indemnity Insurance Company.
Does Sinclair Air Systems carry workers' compensation coverage?
Sinclair Air Systems has a previously-filed workers' compensation policy with Continental Casualty Company that is no longer active.
How do I verify Sinclair Air Systems's contractor license?
You can verify Sinclair Air Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=724978.
- License issuedJul 15, 1996
- WC coverage startsJun 3, 2025
- Bond activeFeb 26, 2026
- WC expiredJun 3, 2026
- License expiredJul 31, 2026
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