Room Lighting Building Codes & Rules

≥ 2m^{NCC 2022 HP, 10.3.1 (1) (f)}

Window Lighting

• ≥ 900mm External Window from Property Boundary^{NCC 2022 HP, 10.5.1 (3)}
• Window light transmission^{NCC 2022 HP, 10.5.1 (2) (a) (ii)}
• ≥ 10% of room floor area
• From unobstructed Glazed Panels
• From open spaces such^{NCC 2022 HP, 10.5.1 (4) (b) (i) (A)}
• Courtyard,
• Patio,
• Veranda,
• Carport, or the like
• If from an Adjoining Room
• ≥ 10% of combined room floor areas^{NCC 2022 HP, 10.5.1 (4) (b) (i) (B)}
• Adjacent Room window is accessible to open areas^{NCC 2022 HP, 10.5.1 (2) (a) (i)}

Natural Light Sources

• Using Windows, Roof Lights or both^{NCC 2022 HP, 10.5.1 (2) (c)}
• Provided to all Habitable Rooms^{NCC 2022 HP, 10.5.1 (1)}

Roof Lighting

• Roof Light transmission^{NCC 2022 HP, 10.5.1 (2) (b) (i)}
• ≥ 3% of room floor area
• From unobstructed Glazed Panels
• Exposed to open sky^{NCC 2022 HP, 10.5.1 (2) (b) (ii)}
• If from an Adjoining Room
• ≥ 3% of combined room floor areas^{NCC 2022 HP, 10.5.1 (4) (b) (ii) (A)}
• Adjacent Room roof light is exposed to sky^{NCC 2022 HP, 10.5.1 (4) (b) (ii) (B)}

Artificial Light Sources^{NCC 2022 HP, 10.5.2}

• ≥ 1 Light fitting per 16m² floor area
• For Non-habitable rooms such
• Sanitary Areas,
• Airlocks, &
• Laundries
• As per AS/NZS 1680.0

Habitable Room

Property Boundary

≥ 900^{NCC 2022 HP, 10.5.1 (3)}

≥ 2.4m^{NCC 2022 HP, 10.3.1 (1) (a)}

≥ 2.1m^{NCC 2022 HP, 10.3.1 (1) (d)}

≥ 2.1m^{NCC 2022 HP, 10.3.1 (1) (b)}

Sloped Ceiling Room Heights

• Any part with a ceiling height of ≤ 1.5m is excluded when determining the floor area of a room or space^[1]

Sloped Ceiling Room Heights

NCC 2022 V1

NCC 2022 HP, 10.3.1 (1) (e) (i) (B)

NCC 2022 HP, 10.3.1 (1) (e) (ii)

NCC 2022 HP, 10.3.1 (1) (e) (i) (A)

NCC 2022 HP, 10.3.1 (2)