Idaho Capitol Watch

HB 643: BUILDING CODES – Amends existing law to require certain heat detection devices in certain attached garages and to provide an exemption from a requirement of fire sprinklers for certain multiple-family dwellings with fire walls.

Amends Idaho Code 39-4116 to require heat detection devices in attached garages for new single-family homes and certain multi-family dwellings exempt from automatic fire sprinkler systems. Clarifies exemption for multi-family dwellings up to two units or larger buildings with proper fire walls. Effective July 1, 2026.

Status

Reported Printed (February 13, 2026) · Originated in the Idaho House · Introduced February 12, 2026

Sponsors

  • BUSINESS COMMITTEE

Committees

  • JRA for Printing

Bill history

  • February 12, 2026 — House: Introduced, read first time, referred to JRA for Printing
  • February 13, 2026 — House: Reported Printed and Referred to Business

If this preview does not update automatically, use the full page link.

Canonical URL: https://idahocapitolwatch.com/bills/2026-HB643