NFPA 13R - 2025, Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies

NFPA 13R is a residential sprinkler design standard focused on low-rise residential occupancies. The Standard’s intent is to provide a sprinkler system that aids in the control of residential fires and provides improved protection against injury and life loss in multi-family dwellings.

The 2025 edition features several significant revisions, including:

• Revised conversion factors in Chapter 1
• New definition for “ceiling pocket”
• Revised clarification that “common spaces” such as lounges, group cooking facilities, and group bathrooms are to be considered part of a dwelling unit
• Differentiation between LED-style lights and other lights as a heat source
• New guidance on installing sidewall sprinklers beneath a sloped ceiling
• Clarification in Chapter 8 that an “inside hose demand” is not required for NFPA 13R systems