Prescott Valley, AZ Building Safety: Fire Sprinkler Requirements (2026)

Two Town Code sections handle residential sprinklers. Section 7-03-030(C) amends IRC Chapter 3 by replacing Section R313, Automatic Fire Sprinkler Systems, in its entirety with a single sentence: automatic fire sprinkler systems must meet the requirements of Arizona Revised Statutes and the Central Arizona Fire and Medical Authority Code, as amended. Section 7-03-290(A) does the same for IRC Section P2904, Dwelling Unit Fire Sprinkler Systems, in the water supply chapter. Neither section prints a square footage trigger, a water supply standard or an exemption, so those answers live in the state statutes and in the Code that the Central Arizona Fire and Medical Authority (CAFMA) has adopted and amended.

The same hand-off appears in the commercial building code. Section 7-02-090(A) replaces IBC Section 901 with a rule that fire protection and life safety systems be installed, repaired, operated, maintained and enforced in accordance with CAFMA requirements and the International Fire Code as CAFMA adopts and amends it. The Building Official shall assist CAFMA in the inspection, testing and oversight of fire protection systems and shall withhold approvals where a system does not comply. Section 7-02-090 then deletes IBC Sections 902, 903 (Automatic Sprinkler Systems), 904, 905, 906, 907 and 908 in their entirety.

Existing systems fall under the Property Maintenance Code. Section 7-07-070 sets IPMC Section 704.1 so that all systems, devices and equipment to detect a fire, actuate an alarm, or suppress or control a fire must be maintained in an operable condition at all times in accordance with CAFMA and International Fire Code requirements.

Plan review and inspection run through Article 7-01: the building official reviews applications under § 7-01-160, and permitted work is inspected under § 7-01-180. A sprinklered house needs the CAFMA Code in hand alongside the Town Code, because the Town Code supplies only the cross-reference.