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The office is in Chula Vista
Plumber insurance in Chula Vista.
Mainline Insurance Services, Inc. is the agency at 779 3rd Avenue. It is not a plumbing company. South Bay plumbing contractors call 619-420-8600 for a certificate, workers' compensation, or the truck. Same-day certs when the job needs them.
Monday-Friday, 9:00 a.m. to 5:00 p.m. Pacific. License 0F23572. No price on this page.
Have this ready when you call.
- The CSLB license number, and whether anyone on the license is an employee.
- Rough annual plumbing payroll, or a clear "no employees."
- How many trucks, and whether a trailer carries a jetter.
- If a general contractor is waiting, the certificate wording they sent. Do not shorten it. That request has its own page.
South Bay cities this office already serves.
Chula Vista, National City, Bonita, Otay Mesa, San Ysidro, Imperial Beach, and Eastlake. A plumber working in those places uses this office. A plumber in the rest of the county uses the same office and starts on the San Diego County page.
The license rules are statewide. The local difference is a person on Third Avenue who can issue a certificate for a policy already on file, and who can tell a solo C-36 the exemption is still open until January 1, 2028. That rule is spelled out here.
Visit or call.
Mainline Insurance Services, Inc.
779 3rd Avenue, Chula Vista, CA 91910
619-420-8600
quotes@mainline-ins.com · certs@mainline-ins.com
Monday-Friday, 9:00 a.m. to 5:00 p.m. Pacific
Common questions
Do Eastlake, Otay Mesa, and National City use this office?
Yes. One office, at 779 3rd Avenue. Those cities do not have a second Mainline address.
Can I get a certificate without driving in?
Yes, when the policy is already on file. Call 619-420-8600 or email certs@mainline-ins.com with the holder, the job, and the wording. Same-day certs when the job needs them. This page does not promise a number of minutes.
Is this a plumbing contractor?
No. Mainline Insurance Services places the insurance. It does not do the plumbing.