NCC 2025 Housing Provisions 10.5 · 10.6
HP 10.6.2 does not apply to rooms or spaces of a specialised nature occupied neither frequently nor for extended periods.
Bedrooms, living, dining, studies. Needs glazing ≥ 10% of the floor area, and openable area ≥ 5% or ventilation to AS 1668.2 or AS 1668.4.
Light-transmitting area, excluding frames.
Openable sashes, doors and vents to the outside.
Open to the sky — counts at the 3% rule and combines proportionally with windows.
Enter the floor area to draw the gauges.
Enter the dimensions above to evaluate compliance.