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Smoke Alarms/Carbon Monoxide Alarms
Smoke alarms must be shown in the following locations:

***Please note:  All smoke alarms shall be listed in accordance with UL217 and installed in accordance with the provisions of NFPA72 (household fire warning equipment).  The smoke alarms shall be hardwired, interconnected and have battery back-up.

  • Each sleeping room (including “den” or “office” that has a closet)
  • Outside of and in the immediate vicinity of all bedrooms
  • Where adjacent ceiling heights vary 24 inches or more, or where door openings archways drop down 24 inches or more from the adjoining ceiling height (section R313.1, I.R.C., as City amended)
  • Each story, including the basement
  • The City highly recommends that all existing habitable residential buildings, constructed prior to the requirements for smoke alarm protection, be equipped with a level of smoke alarm protection.  The smoke alarm devices may be battery operated and are to be located in the same locations as noted above.

***Please Note: For alterations, repairs, and additions reference section R311.2.1., I.R.C.

Carbon monoxide alarms must be shown in the following location:

  • Outside of each separate sleeping area in the immediate vicinity of the bedrooms in dwelling units within which fuel-fired appliances are installed and in dwelling units that have attached garages.
  • The City highly recommends that all existing habitable residential buildings, constructed prior to the requirements for carbon monoxide (CO) protection, be equipped with a level of smoke CO alarm protection.  The CO alarm devices may be battery operated and are to be located in the same locations as noted above.

***Please note:  All carbon monoxide alarms shall be listed and labeled in accordance with UL 217, "Single and Multiple Station Carbon Monoxide (CO) Alarms".  As an alternate to self-contained CO alarms, a household carbon monoxide detection system installed in accordance with NFPA 720, "Standard for the Installation of Carbon Monoxide (CO) Detection and Warning Equipment" may be used.



Contact Information

City of Litchfield Park
Building Safety Department
214 West Wigwam Boulevard
Litchfield Park, Arizona 85340

Ph: 623-935-1066
Fx: 623-935-5424


Updated 4/22/2016