If you own or manage a commercial or multi-family property in California, you've probably seen "NFPA 25" on an inspection report, a notice of violation, or a contractor's quote. Most property owners know it's important — but not what it actually requires of them.
This guide explains NFPA 25 in plain English: what it is, who it applies to, what it requires, and what happens if you're not in compliance.
NFPA 25 is the Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, published by the National Fire Protection Association. It sets minimum requirements for keeping fire sprinkler systems — and other water-based suppression systems — in working order. California adopts it statewide through the California Fire Code (Title 19).
Who Does NFPA 25 Apply To?
NFPA 25 applies to any property with a water-based fire protection system, including:
- Commercial buildings (offices, retail, restaurants, warehouses, industrial)
- Multi-family residential buildings with 5 or more units
- Schools, healthcare facilities, and places of assembly
- Hotels and lodging properties
Single-family homes with residential sprinkler systems (NFPA 13D) are subject to a lighter standard, but most California residential systems still require at least an annual inspection.
What Does NFPA 25 Actually Require?
NFPA 25 organizes requirements into three categories — Inspection, Testing, and Maintenance — which is why contractors often refer to "ITM" services.
Inspection
Visual checks at set intervals to confirm components are present, undamaged, and unobstructed. Intervals range from weekly (control valves on dry systems) to annually (full system visual) to every 5 years (internal pipe inspection).
Testing
Functional tests to confirm the system actually works. This includes waterflow alarm tests, trip tests on dry valves, and forward-flow tests on backflow preventers. Some tests are annual; others are every 3 years.
Maintenance
Physical upkeep — lubricating valves, replacing corroded heads, painting over exposed pipe, draining low-point drains on dry systems. Maintenance is performed when inspection or testing reveals a deficiency, or on a scheduled basis for known wear items.
The Key Inspection Intervals
Most Kern County property owners need to be aware of four intervals:
- Quarterly: Visual inspection of sprinkler heads, control valves, and waterflow devices
- Annual: Full system inspection with a signed report and compliance certificate
- Every 3 years: Dry system trip test (if applicable); backflow preventer forward-flow test
- Every 5 years: Internal pipe inspection (obstruction investigation) — the one most owners miss
For a full breakdown, see our guide: How Often Do Fire Sprinklers Need to Be Inspected? →
What Happens After an Inspection?
At the conclusion of a compliant inspection, a licensed C-16 contractor provides:
- A signed NFPA 25 inspection report documenting every component checked
- A compliance certificate for your records
- A deficiency list if any issues were found, with recommended corrections
What Happens If You're Not in Compliance?
Local fire marshals in Kern County — the Bakersfield Fire Department and Kern County Fire Department — inspect commercial properties and can issue violations for NFPA 25 non-compliance. Consequences can include:
- Written notice of violation requiring correction within a set deadline
- Reinspection fees
- Fines for repeat or uncorrected violations
- Insurance complications — some carriers require current NFPA 25 certificates and can deny fire-related claims on non-compliant properties
- In serious cases, required occupancy restrictions until the system is restored to compliance
How California Enforces NFPA 25
California adopts NFPA 25 through the California Fire Code (Title 19, Chapter 9). Local jurisdictions — including Bakersfield and Kern County — enforce it through annual fire inspections of commercial occupancies. The fire marshal can request inspection records on any visit, and gaps in your ITM history are a red flag.
California also requires that inspection records be retained on-site and available for review. Losing your records — even if your system is actually in good shape — is itself a compliance issue.
How to Stay Compliant in Kern County
The most reliable approach is an ITM maintenance plan with a licensed C-16 contractor — a scheduled agreement that covers every required inspection and testing interval for the year. The contractor tracks the calendar, provides the certificates, and alerts you when anything needs attention.
Kern Sprinklers connects Kern County property owners with licensed C-16 contractors offering ITM plans. Learn about maintenance plans →
If you just need a one-time inspection to get back into compliance, we can match you with a contractor for that too. Request a quote → or call (661) 384-7908.