A granny flat can be approved through the ‘Complying Development’ process (State Government Approval via a Private Certifier or Council) provided specific development standards (set by State Government) are met without the need for a full Development Application through local council.
In order to meet State Government requirements for a granny flat, here is a snapshot of minimum requirements:
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Private Open Space
24m2 of private open space must be provided. It must be at least 4m wide and directly accessible from and adjacent to a habitable room other than a bedroom.
Setbacks from ‘protected’ trees must be at least 3m. If tree removal is required, a separate tree removal permit may be required. Please check with your local council.
Size & Height
• A granny flat may not be larger than 60m2 measured from external walls
• It can be 1,2 or 3 bedroom
• The maximum height is 8.5m but a special formula us used if the height exceeds 3.8m at setback points
• If a granny flat wall is built within 1.8m of an existing dwelling, the wall must be fire rated
Site drainage must comply with your council’s stormwater policies