# Fire protection companies in Napa, California

6 contractors with an active California CSLB C-16 Fire Protection Contractor license have a location in Napa, California, as of October 24, 2026. Another 5 are located elsewhere in Napa County.


## Located in Napa

- [KEN Johns Plumbing](https://plumbregistry.com/fire-protection/providers/ken-johns-plumbing/) — based in Napa, CA; fire sprinkler; licenses: 364471; phone: 707-252-3582
- [Marceau Fire Protection Inc](https://plumbregistry.com/fire-protection/providers/marceau-fire-protection-inc/) — based in Napa, CA; fire sprinkler; licenses: 1075410; phone: 925-250-1854
- [Oakville Pump Service Inc](https://plumbregistry.com/fire-protection/providers/oakville-pump-service-inc/) — based in Napa, CA; fire sprinkler; licenses: 744958; phone: 707-944-2471
- [Plumbing Innovations Inc](https://plumbregistry.com/fire-protection/providers/plumbing-innovations-inc/) — based in Napa, CA; fire sprinkler; licenses: 624540; phone: 707-226-9502
- [SAM Cowell](https://plumbregistry.com/fire-protection/providers/sam-cowell/) — based in Napa, CA; fire sprinkler; licenses: 565603; phone: 707-738-1842
- [Steve Silva Plumbing Inc](https://plumbregistry.com/fire-protection/providers/steve-silva-plumbing-inc/) — based in Napa, CA; fire sprinkler; licenses: 483676; phone: 707-252-3941

## Elsewhere in Napa County

- [A+ Waterworks Inc](https://plumbregistry.com/fire-protection/providers/a-waterworks-inc/) — based in American Canyon, CA; fire sprinkler; licenses: 745951; phone: 707-249-8987
- [JWS Fire Protection](https://plumbregistry.com/fire-protection/providers/jws-fire-protection/) — based in American Canyon, CA; fire sprinkler; licenses: 1087286; phone: 707-337-7971
- [Major Fire Systems Inc](https://plumbregistry.com/fire-protection/providers/major-fire-systems-inc/) — based in American Canyon, CA; fire sprinkler; licenses: 679651; phone: 707-290-1201
- [Plumbing Contractors](https://plumbregistry.com/fire-protection/providers/plumbing-contractors/) — based in American Canyon, CA; fire sprinkler; licenses: 600928; phone: 707-255-7789
- [SFI Mechanical Inc](https://plumbregistry.com/fire-protection/providers/sfi-mechanical-inc/) — based in Calistoga, CA; fire sprinkler; licenses: 940703; phone: 707-710-8415

## FAQ

**How do I check that a fire protection company in Napa 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 Napa to work there?**

No. California licenses are statewide, so companies based elsewhere in Napa County or across California can work in Napa. Confirm the service area with the company.

_Source: California Contractors State License Board (CSLB) licensee records (https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx), retrieved October 24, 2026. Published by Plumb Registry._