661—210.4 (100) Smoke detectors—new and existing construction.
	 210.4(1) New construction. All multiple-unit residential buildings and single-family dwellings which are constructed after July 1, 1991, shall include the installation of smoke detectors meeting the requirements of rule 661—210.1(100) and rule 661—210.2(100).
	 210.4(2) Existing construction. All existing single-family units and multiple-unit residential buildings shall be equipped with smoke detectors as required in paragraph 210.2(11)“a.”