Chiefs Regulation 4

Testing of Fire Protection Equipment
The Los Angeles Fire Department is pleased to offer guidance for your testing of Fire Protection Equipment in accordance with Chief's Regulation Number 4.

What We Will Need You To Do!    Regulations No. 4 prospective applicant letter
It is important that you first identify:

  1. Which Fire Protection Systems are in your building.
  2. The date that each system was last tested.
  3. The testing frequency required for such systems, are outlined below.

Basic Fire Warning Systems - 1 year
Complex Fire Warning Systems - 1 year
Central Station Signaling Systems - 1 year
Smoke Management Systems - 1 year
Elevators, Automatic - 1 year
Emergency Generator and Lighting Systems
All Occupancies - 1 year
Fire Doors: All Types/All Occupancies - 1 year
Fire Escapes - 1 year
Class I Standpipe Systems - 5 years
Class II Standpipe Systems - 5 years
Class III Standpipe Systems - 5 years
Combined Standpipe Systems - 5 years
Class H Standpipe Systems:
For Systems with a Booster Pump - 2 years
For all other Systems - 5 years
Fire Pumps - 1 year
Automatic Fire Sprinkler Systems - 5 years

Note: Pre-action, Deluge and Dry Pipe Systems are tested annually.

  • Pressure Reducing Valves (PRV's)
  • Partial Flow - 1 year
  • Full Flow - 5 years
  • Automatic Fire Extinguishing Systems - Every 6 months

What Is The Process?
If a Chief's Regulation No. 4 test is required, please contact a certified tester to schedule and perform your test.

  • A list of currently certified testers is available from the Chief's Regulation No. 4 Unit.
  • An LAFD Fire Inspector (or your Neighborhood Fire Station) must be given 2 working days notice prior to conducting the test. (Monday through Friday, not including Holidays).
  • The certified tester must provide two copies of the test results on Fire Department approved forms, with all defects clearly noted. Within 7 days, copies of the report must be forwarded through the Chief's Regulation No. 4 Unit.
  • Repair and Retest: If defects are found in equipment that is being tested, correction on such defects shall commence forthwith and shall be completed as soon as possible, but in every case within 30 days of the initial test. At the completion of such repair, the system or device shall be retested as necessary to determine that it is fully operable.
  • Defects in a building's fire life safety systems may be found during the routine annual fire inspection. At such annual inspection, a notice to conduct a Regulation No. 4 test will be given to building management.




  • LAFD Bureau of Fire Prevention & Public Safety, Chief's Regulation No. 4 Unit
  • Your Neighborhood Fire Station 
Fire Station NON-Emergency Business Phone Numbers
  • The following list of Fire Prevention Bureau (FPB) email addresses can be used for:
    • Submitting the required two working day notification for Reg. 4 testing
    • Contacting a Unit about an issue with an FPB occupancy
    • Emailing Reg. 4 reports (contact Chief’s Reg. 4 for parameters)
    • General correspondence with a specific Unit

Brush Unit:
Central Industrial Unit:
Chief’s Reg. 4 Unit:
Environmental Unit:
Film Unit:
Harbor Industrial Unit:
High Rise Unit:
Hydrants and Access Unit:
Legal Unit:
Public Assemblage Unit:
Schools/Churches/Institutions Unit:
Valley Industrial Unit:
Valley Public Safety Unit:
West Industrial Unit:

For Additional Information Contact:
Los Angeles Fire Department
Bureau of Fire Prevention & Public Safety Chief's Regulation No. 4 Unit
200 North Main Street, Room 1700
Los Angeles, CA 90012 USA
Phone: (213) 978-3596