National Building Regulations
Part O. Lighting and Ventilation
To select a section, select the down arrow and select a choice from the list.
O2. Special Provision of Natural Lighting
Any habitable room in any dwelling house or dwelling unit, or any bedroom in any building used for residential or institutional occupancy shall, notwithstanding the provision of artificial lighting, be provided with at least one opening for natural light in accordance with subregulation O1(1).