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Property ManagementHealthy Homeslevel4MEDIUM

A bedroom in a rental has a floor area of 12 m². What is the minimum total openable window or door area required under the healthy homes ventilation standard?

Correct Answer

A) 0.6 m², which is 5% of the floor area.

Regulation 21 requires each habitable space to have one or more windows, skylights or doors that open to the outdoors and can be fixed open, with a total openable area of at least 5% of the room's floor area. For 12 m², 5% is 0.6 m².

Answer Options
A
0.6 m², which is 5% of the floor area.
B
1.2 m², which is 10% of the floor area.
C
0.12 m², which is 1% of the floor area.
D
No minimum, provided the room has a mechanical extractor fan.

Why This Is the Correct Answer

Regulation 21(2) sets a 5% openable area; 5% of 12 m² is 0.6 m².

Why the Other Options Are Wrong

Option B: 1.2 m², which is 10% of the floor area.

The standard is 5% of floor area under reg 21(2), not 10%.

Option C: 0.12 m², which is 1% of the floor area.

One per cent is far below the 5% set by reg 21(2).

Option D: No minimum, provided the room has a mechanical extractor fan.

Extractor fans are required in kitchens and bathrooms, not in place of bedroom windows.

Background Knowledge for Property Management

Source: https://www.legislation.govt.nz/regulation/public/2019/0088/latest/whole.html

Exam Tip for Property Management

Openable area: 5% of floor area in each habitable room.

Common Mistakes to Avoid on Property Management Questions

  • •Using 10%, or thinking fans can replace windows in bedrooms.
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