Mainline Engineering Services INC, A General Engineering Contractor in Norco, CA
Mainline Engineering Services INC operating as a corporation holds an active California contractor license (CSLB #1080863), valid through Sep 30, 2027. First issued in 2021, the license has been on the CSLB roster for 5 years. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with Western National Mutual Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Norco, in Riverside County, California.
- License Number
- 1080863
- Issued
- Sep 7, 2021
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Corporation
- Surety
- Western National Mutual Insurance Company
- Bond Number
- 69140
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Aug 8, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mainline Engineering Services INC licensed in California?
Yes. Mainline Engineering Services INC holds California Contractors State License Board license number 1080863, which is active and in good standing. The license was first issued on September 7, 2021. It is valid through September 30, 2027.
What does Mainline Engineering Services INC specialize in?
Mainline Engineering Services INC is licensed for one CSLB classification: A General Engineering Contractor.
Where is Mainline Engineering Services INC headquartered?
Mainline Engineering Services INC is headquartered at 3178 Pacer Dr, Norco, CA 92860, in Riverside County, California.
Does Mainline Engineering Services INC have an active surety bond on file with CSLB?
Yes. Mainline Engineering Services INC has an active California contractor surety bond filed with Western National Mutual Insurance Company.
Does Mainline Engineering Services INC carry workers' compensation coverage?
Mainline Engineering Services INC reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Mainline Engineering Services INC's contractor license?
You can verify Mainline Engineering Services INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1080863.
- License issuedSep 7, 2021
- Bond activeJan 1, 2023
- WC coverage startsAug 8, 2025
- License expiresSep 30, 2027
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