Minimum Internal Floor Area

• The minimum internal floor area must be at least 8 m²

• Internal floor area refers to the area contained within the enclosing walls of a unit, which is measured from the interior face of the external walls or partitions walls, with all partitions and columns within the unit included

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Minimum Height

• Clear headroom must be at least 2.3m from floor to ceiling

• Clear headroom must be at least 2.0m from the floor to underside of any beam

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Fire Safety

• Same as the existing standards under the Buildings Ordinance (Cap. 123). For example, SDUs should be provided with access to two or more exit staircases (except for single staircase buildings)

• If the fire-rated door at the original entrances is retained - the clear width of the internal corridor leading to a SDU must not be less than 0.75m; if the fire-rated door is removed or does not have enough fire resisting construction – the clear width of the internal corridor must be not less than 1.05m

• Each SDU must be equipped with stand-alone fire detectors. Stand-alone fire detectors and fire extinguishers must be installed in the common area (if any) of the residential flat where a SDU is located

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Loading

• Comply with prevailing statutory loading requirements

• Carry out works in accordance with the simplified requirements of the "Minor Works Control System" by appointing building professionals / prescribed registered contractors to design and supervise the works

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Separate Toilet

• Must be waterproofed toilet and enclosed with partition walls in the SDU for exclusive use by its occupier

• Waterproofing membrane / material must be applied to the floor and walls of the toilet

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Water Supply Point and Sink Outside Toilet

• A water supply point and a sink must be provided outside the toilet and the area around the water supply point and sink must be waterproofed

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Lighting and Ventilation

• Habitable Area: Must be provided with at least one openable window having at least 0.1 m² superficial area of glass facing the external air, and be fitted with artificial lighting and mechanical means of ventilation capable of supplying fresh air at a rate of at least five air changes per hour

• Toilet: "Dark toilet" must be fitted with artificial lighting and mechanical means of ventilation capable of supplying fresh air at a rate of at least five air changes per hour

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