Mainline Construction, B General Building Contractor in Mission Viejo, CA
Mainline Construction operating as a corporation holds an active California contractor license (CSLB #855137), valid through Dec 31, 2027. First issued in 2005, the license has been on the CSLB roster for 21 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Nationwide Mutual Insurance Company and active workers' compensation coverage from Benchmark Insurance Company. The business is based in Mission Viejo, in Orange County, California.
- License Number
- 855137
- Issued
- Feb 28, 2005
- Status
- CLEAR
- Expires
- Dec 31, 2027
- Entity
- Corporation
- Surety
- Nationwide Mutual Insurance Company
- Bond Number
- 7901207517
- Effective
- Nov 14, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Benchmark Insurance Company
- Policy Number
- 99WC0000043602
- Effective
- Feb 23, 2026
- Expires
- Feb 23, 2027
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mainline Construction licensed in California?
Yes. Mainline Construction holds California Contractors State License Board license number 855137, which is active and in good standing. The license was first issued on February 28, 2005. It is valid through December 31, 2027.
What does Mainline Construction specialize in?
Mainline Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Mainline Construction headquartered?
Mainline Construction is headquartered at 27262 Regio, Mission Viejo, CA 92692, in Orange County, California.
Does Mainline Construction have an active surety bond on file with CSLB?
Yes. Mainline Construction has an active California contractor surety bond filed with Nationwide Mutual Insurance Company.
Does Mainline Construction carry workers' compensation coverage?
Yes. Mainline Construction carries active workers' compensation coverage through Benchmark Insurance Company.
How do I verify Mainline Construction's contractor license?
You can verify Mainline Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=855137.
- License issuedFeb 28, 2005
- Bond activeNov 14, 2025
- WC coverage startsFeb 23, 2026
- WC expiresFeb 23, 2027
- License expiresDec 31, 2027
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