Carl Maertens, B General Building Contractor in Monrovia, CA
Carl Maertens operating as a sole owner holds California contractor license #601255, which is currently expired (lapsed Aug 31, 2026) and not valid to contract until it is renewed. First issued in 1990, the license has been on the CSLB roster for 36 years. It carries 2 CSLB classifications: B General Building Contractor and C-36 Plumbing Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Monrovia, in Los Angeles County, California.
- License Number
- 601255
- Issued
- Aug 24, 1990
- Status
- CLEAR
- Expires
- Aug 31, 2026
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 67395604
- Effective
- Jun 29, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Aug 12, 2024
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Carl Maertens licensed in California?
Carl Maertens previously held California Contractors State License Board license number 601255, but the license expired on August 31, 2026 and is not currently valid. It was first issued on August 24, 1990.
What does Carl Maertens specialize in?
Carl Maertens is licensed for 2 CSLB classifications: B General Building Contractor and C-36 Plumbing Contractor.
Where is Carl Maertens headquartered?
Carl Maertens is headquartered at 228 East Greystone Avenue, Monrovia, CA 91016, in Los Angeles County, California.
Does Carl Maertens have an active surety bond on file with CSLB?
Yes. Carl Maertens has an active California contractor surety bond filed with Western Surety Company.
Does Carl Maertens carry workers' compensation coverage?
Carl Maertens reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Carl Maertens's contractor license?
You can verify Carl Maertens's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=601255.
- License issuedAug 24, 1990
- WC coverage startsAug 12, 2024
- Bond activeJun 29, 2025
- License expiredAug 31, 2026
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