CSLB #976500 · State Fire Marshal #E2390 · Title 19 Certified
24/7 Emergency: (877) 256-0161Local Coverage
SOS provides on-site fire protection for businesses in Diamond Bar: extinguisher service, commercial kitchen suppression, special hazard systems, food truck protection, violation correction, consulting and emergency support. Request a planned visit or call for emergency dispatch.
On-site service
Choose a service below for equipment details and inspection information. Scheduled visits are arranged separately from emergency dispatch.
On-site extinguisher maintenance, certification and replacement for your business.
Diamond Bar is served by the Los Angeles County Fire Department (LACoFD). Annual business inspections there are handled by the department's Diamond Bar Fire Prevention office at 1061 S. Grand Ave, Diamond Bar. California Title 19 requires annual extinguisher maintenance, with an itemized invoice for the work and parts.
Service for commercial kitchen hood and duct suppression systems, scheduled around your operation.
California requires kitchen hood suppression systems to be inspected, tested and maintained by a licensed contractor at least every six months and right after any activation; local authorities may require more. SOS holds a C-16 license (CSLB #976500).
Suppression systems for industrial processes, spray booths and sensitive equipment rooms.
Fire suppression service for food trucks and mobile kitchens at the commissary or where your truck parks.
Send us the inspection notice so we can review the required corrections and plan the work.
Help preparing for inspections, reviewing plans and understanding the requirements for your project.
Minor plan checks for fire extinguishing systems in Diamond Bar go through the department's Diamond Bar Fire Prevention office, which also carries out new construction inspections.
Call for a discharged system, a gas lockout or an equipment problem keeping your business closed.
We dispatch 24/7 and target arrival within two hours. Arrival depends on location and availability; call to confirm dispatch.
Tell us what you need. We'll contact you to confirm the work and arrange a visit.
Reported active incidents within 50 miles of Diamond Bar.
This dashboard provides a snapshot of the current local fire safety status for the selected area. The information is based on publicly available data from official local and regional fire authorities and reflects current wildfire conditions and general fire safety considerations. The content is intended to support situational awareness and informed decision-making.
