Size & setback check
Granny Flat Size & Setback Checker
Check your floor area and indicative setback distances against common state caps. Overlays and lot shape still need council confirmation.
Related guides
Tools give you a starting point. These pages go deeper on rules, costs and design.
Primary sources
Size caps, approval pathways and dollar bands on this page are planning ranges. Check the current official page before you lodge or sign.
- NSW Planning Portal
- Victorian planning
- Queensland planning
- WA planning (DPLH)
- PlanSA
- Australian Building Codes Board
See our editorial standards for how we research and update guides.
