353.Smoke alarms conforming to CAN/ULC-S531, Smoke Alarms, must be installed
(1) in every dwelling unit;
(a) on each storey; and
(b) on each storey where bedrooms are located, the smoke alarms must be installed between the bedrooms and the remainder of the storey, except if the bedrooms are accessed by a corridor, in which case the smoke alarms must be installed in the corridor;
(2) in each sleeping room that is not part of a dwelling unit, except in care or detention occupancies, which must be equipped with a fire alarm system;
(3) in each corridor and each shared rest or activity area in a residential occupancy for the elderly that is not equipped with a fire alarm and detection system;
(4) in sleeping rooms and in the corridors of a residential board and care occupancy designed in compliance with Article 188.8.131.52 of NBC 1995 am. Québec or 2005 am. Québec, if the bedrooms are not equipped with smoke detectors;
(5) in each sleeping room, corridor and shared rest or activity area of a single-family type residential occupancy for the elderly.