Size & Layout
How big can your granny flat be?
The maximum size you can build is set by your local council — and it varies from one council to the next. Two similar-looking blocks in different areas can have quite different limits.
We check the rules that apply to your specific block, then shape the layout around who will live there and how the space needs to work day to day.
Check your council
A council-by-council size guide is coming soon. In the meantime, send us your address and we'll tell you what applies to your block.
Send your address