2-Storey Granny Flats
Can I build a 2-Storey Granny Flat?
Generally, the answer is YES...
HOWEVER- the code stipulates that the higher the building gets, the larger the rear and side setbacks will need to be, to compensate for the increased height. Once a building exceeds 3.8m in height, then a formula applies to determine the required setbacks, as per the table below.
H= Additional Height Over the 3.8m
Side SetbackLineal metres
Setback Formula Lineal metres
Rear SetbackLineal metres
Setback FormulaLineal metres
|Height < 3.8m||Height > 3.8m||Height < 3.8m||Height > 3.8m|
|450-900m2||0.9m||0.9m + (0.25+H/3.8m)||3m||8m max|
|900-1500m2||1.5m||1.5m + (0.25+H/3.8m)||5m2||12m max|
|>1500m2||2,5m||2.5m + (0.25+H/3.8m)||10m2||15m max|
Additional CDC Requirements
- No more than 1 Granny Flat premissible per lot.
A Granny Flat is classified as a 'secondary dwelling', and there cannot be two 'secondary dwellings on one lot'.
- There must be a 'primary dwelling' (main house) established on, or approved for, the property.
- Must allow for a 24m2 courtyard space (in addition to the 60m2 Granny Flat), with an area minimum 4m wide.
This is an open space, and can be placed within the property setbacks.
- For battle-axe blocks, an access handle of at least 3m wide is required
Build with the Best
Granny Flat Solutions is the ONLY multi-award winning granny flat company, with over 13 awards under our belt.