Kent County, DE Building Safety: Fire Sprinkler Requirements (2026)

2 for local use. Where the base IRC directs builders to install automatic residential fire sprinklers in new townhouses and new one- and two-family dwellings, Kent County's version states only that a system "may be installed," turning what is a nationwide model-code mandate into a purely optional feature homeowners and builders can choose. No other section of Chapter 105 imposes a sprinkler mandate for single-family or two-family residential construction; the requirement exists only as an option a builder can voluntarily design into a project. The Department of Planning Services, Division of Inspection and Enforcement, administers and enforces Chapter 105 as building official, reviewing permit applications and plans for compliance with the adopted code as amended.

Because no sprinkler installation is mandated, none is checked for at plan review or final inspection, and a certificate of occupancy for a new single-family, two-family, or townhouse unit is not conditioned on sprinkler presence. Builders who do choose to install a system must still meet the applicable NFPA standards referenced elsewhere in the IRC for any system actually installed, since the amendment permits but does not exempt voluntary systems from proper design and installation standards.