Fire Sprinkler Requirements: Mountain View vs San Jose
How do fire sprinkler requirements rules compare between Mountain View, CA and San Jose, CA?
Mountain View has fewer restrictions than San Jose.
Mountain View, CA
Santa Clara County
Santa Clara County Code Title B adopts the California Residential Code R313, requiring NFPA 13D fire sprinklers in all new one- and two-family dwellings and townhomes in unincorporated areas, with County Fire reviewing plans.
View full Mountain View rules →San Jose, CA
Santa Clara County
San Jose requires automatic fire sprinklers in all new one- and two-family dwellings and townhouses under California Residential Code R313, adopted locally through SJMC Title 17 and enforced by the San Jose Fire Department's Bureau of Fire Prevention.
View full San Jose rules →Key Facts Comparison
| Fact | Mountain View | San Jose |
|---|---|---|
| Code section | SCC Title B; CRC R313 | - |
| Trigger | All new one/two-family dwellings | - |
| Standard | NFPA 13D residential sprinklers | CRC §R313 NFPA 13D |
| Plan reviewer | Santa Clara County Fire Department | - |
| Effective date | January 1, 2011 statewide | - |
| Local code | - | SJMC Title 17 + Title 9 |
| Triggers | - | New homes and major additions |
| Reviewer | - | SJFD Fire Prevention Bureau |
| Contractor | - | C-16 license required |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Do existing homes need to retrofit sprinklers?
No. CRC R313 and Title B apply only to new construction and major additions. Existing single-family homes have no retrofit mandate, though insurance discounts often make voluntary installation worthwhile in wildfire-prone hillside areas.
Who inspects sprinkler systems in the unincorporated county?
Santa Clara County Fire Department handles plan check and acceptance testing. Annual inspection and five-year internal testing under NFPA 25 are the property owner's responsibility, with documentation kept on site.
San Jose FAQ
Do existing homes need to retrofit?
No. Sprinklers are only required in new construction, additions over 50 percent of floor area, or substantial remodels. Existing homes built before 2011 are not forced to retrofit unless the home is rebuilt.
Can I install the sprinklers myself?
No. Plans must be designed and installed by a licensed C-16 fire-protection contractor or qualified engineer, and the system requires SJFD acceptance testing before occupancy.
Compare other topics
See how Mountain View and San Jose compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool