Plumb Registry
Sonoma County, California

Fire protection companies in Cotati, California

2 contractors with an active California CSLB C-16 Fire Protection Contractor license have a location in Cotati, California, as of October 24, 2026. Another 53 are located elsewhere in Sonoma County.

California listings cover CSLB C-16 Fire Protection contractors (sprinkler and fixed suppression systems). Fire alarm and portable extinguisher companies are not yet included.

Located in Cotati

Trimyc Mechanical Inc

Cotati, CA · 707-664-1042
Fire sprinkler 1 active license

Westside Mechanical Incorporated

Cotati, CA · 707-795-9606
Fire sprinkler 1 active license

Elsewhere in Sonoma County

California licenses are statewide, so these companies can also work in Cotati.

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Frequently asked questions

How do I check that a fire protection company in Cotati is licensed?
Search the company name or license number in the California Contractors State License Board public lookup (https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx). Every company listed here shows its license numbers and expiration dates, re-checked against state records on each data refresh.
What license does a fire protection company need in California?
California contractors who lay out, fabricate and install fire protection systems (sprinklers and fixed suppression systems) must hold a CSLB C-16 Fire Protection Contractor license. C-16 does not cover electrical fire alarm systems, which are licensed under other classifications.
Does a company need to be located in Cotati to work there?
No. California licenses are statewide, so companies based elsewhere in Sonoma County or across California can work in Cotati. Confirm the service area with the company.

Listed alphabetically. No company pays to rank higher. Machine-readable: JSON · Markdown.