Kauai County, HI Fire Regulations: Smoke Detectors (2026)

Appendix X, Hawai'i Provisions for Indigenous Hawaiian Architecture Structures, was added to the Building Code by Section 12-2.2(68) to give traditional hale a construction path separate from standard IRC or IBC rules; Section X101.1 limits the appendix to hale built from materials grown and harvested in Hawai'i. Section X302 is a short, freestanding rule inside that appendix: any hale used for sleeping must have an approved battery-operated smoke alarm installed in the hale, independent of whatever fire-sprinkler class the structure falls into. Section X301.1's Table X301.1 splits hale into two fire-protection classes by setback: a Class A hale needs no fire protection at all if it, and any grouped structures, sit at least 100 feet from other structures and from property lines, with a reduced 15-foot setback allowed for a hale ku'ai farm stand under 200 square feet that fronts a public way.

A Class B hale, one that meets zoning setbacks but not the 100-foot Class A distance, must instead have an automatic fire sprinkler system designed to NFPA 13 under Section X301.2, sized using the county's own water-meter-based sprinkler count table and requiring an electrical permit for the sprinkler controls. Because Appendix X applies only to hale, not to conventional homes, a typical Kaua'i house is not covered by Section X302 and instead follows whatever smoke-alarm provision the adopted residential code carries without local amendment.