Fire Sprinkler Service in San Diego County

NFPA 25 inspection and testing · Title 19 five-year certification · California work by Hedrick Fire Protection (C-16 and C-10)

Your sprinkler system runs on three schedules

NFPA 25 sets the calendar. Some checks come every quarter, others once a year, and then there's the five-year service, which California's Title 19 says must be performed and certified by a contractor licensed by the State Fire Marshal.

Miss one and the record goes stale. The building looks the same. The paperwork doesn't.

1 Pro Fire covers all three visits across San Diego County, along with repairs and head replacement. In California, the work is done by Hedrick Fire Protection, which holds C-16 (fire protection) and C-10 (electrical) contractor licenses.

What the five-year service adds

Quarterly and annual visits cover what a technician can see and operate: control valves, gauges, alarm devices, and the condition of heads and exposed pipe. The five-year visit goes further.

• An internal assessment of the piping, to look for obstructions and corrosion you can't see from outside.
• Gauge replacement or testing.
• Title 19 certification by a State Fire Marshal licensed contractor.

Older buildings have one more item on the list. Under NFPA 25, sprinkler heads that have been in service for 50 years must be replaced or sample-tested. Not sure how old yours are? The technician can usually read the date off the head itself.

Who checks your sprinkler records depends on your address

San Diego County has 18 incorporated cities and a large unincorporated area. Which fire office inspects you changes at those lines.

• City of San Diego: the San Diego Fire-Rescue Department's Fire Prevention Bureau performs fire inspections, and it only takes complaint inspections inside the city and the Port of San Diego.
• Unincorporated county: the County Fire Marshal inspects businesses in the San Diego County Fire Protection District, including commercial fire protection systems. The same program does plan review and inspections for the Deer Springs Fire Protection District.
• Other cities: some, Vista for example, run their own fire prevention bureaus. Ask that city's fire marshal.

The codes changed this year. The City of San Diego put the 2025 California Fire Code into effect on January 1, 2026, with local amendments in its Municipal Code. The unincorporated districts use the 2026 San Diego County Consolidated Fire Code, which holds the county's amendments to the same state code, so check with the County Fire Marshal which effective date applies to your project.

Adding heads, moving walls or building new

Remodels often affect sprinklers. Inside the county's fire protection district, sprinkler plans go straight to the San Diego County Fire Protection District as a deferred submittal once the building plans are approved. Outside the county's districts, plans go to the fire authority for that area.

New designs often need hydrant flow data. You set up that test with the retail water agency that serves your site, which is one of the 22 member agencies of the San Diego County Water Authority (the City of San Diego Water Department is one of them). See our page on annual fire hydrant testing in San Diego County for more.

Hotels and apartment buildings

California law requires an annual inspection of R-1 and R-2 occupancies, which covers hotels, motels and apartment buildings. A County Grand Jury report found that in fiscal 2025, San Diego Fire-Rescue completed only 47% of the hotel, motel and multifamily inspections it was required to do. The inspector may not come this year. Your NFPA 25 schedule still applies.

More from 1 Pro Fire in San Diego County

Start at the San Diego County fire protection hub, or go straight to fire alarm service in San Diego County, kitchen hood suppression service or fire extinguisher service. Sprinkler pages for nearby cities: Carlsbad fire sprinkler service, Escondido fire sprinkler service and Chula Vista fire sprinkler service.

Case studies from our Southern California work:

• Meeting a fire marshal's 30-day deadline on a San Diego restaurant hood system
• A Carlsbad hydrant repair instead of a $10,000 replacement quote
• Bringing back a fire alarm that sat dormant for two years in Rancho Santa Margarita
• Bilingual, fast-turnaround extinguisher service for a La Puente restaurant
• Extinguisher certification for a 60-vendor Norco rodeo
• Weatherproof extinguisher tags for a Victorville carnival

Fire sprinkler service questions

How often does a fire sprinkler system need service in California?

NFPA 25 calls for quarterly and annual inspections. Title 19 adds a five-year service and certification, which must be done by a contractor licensed by the State Fire Marshal.

Who inspects sprinklers in unincorporated San Diego County?

The County Fire Marshal. It inspects businesses in the San Diego County Fire Protection District, including commercial fire protection systems, while inside the City of San Diego the Fire-Rescue Department's Fire Prevention Bureau does fire inspections.

Do old sprinkler heads have to be replaced?

Heads in service for 50 years must be replaced or sample-tested under NFPA 25. Younger heads are replaced when an inspection finds damage or corrosion.

Where do I submit plans for new sprinklers?

It depends on the district. Inside the county's fire protection district, the plans go to the San Diego County Fire Protection District as a deferred submittal after the building plans are approved; anywhere else, submit to the fire authority for your area.

Need a sprinkler inspection or repair in San Diego County? Call (619) 568-5440 or email socal@1profire.com