Granny Flat Feasibility Checker
Enter an address to check if a granny flat or secondary dwelling can be built on that property.
How it works
We fetch the parcel boundary, building footprints, zoning and planning overlays for your address.
The solver tests standard granny flat models (1-bed, 2-bed, studio) against your site geometry and setback rules.
You get a feasibility verdict, recommended placement, cost estimate and garden plan -- all in under 10 seconds.
Data from Overture Maps, OpenStreetMap, state planning portals and council zoning layers. Rule-backed analysis available for all Australian states. Results are indicative -- always verify with your local council.
State guides
Fetching property data...
Checking...
Lot Information
Existing Buildings
Model Selection
The solver will test standard models and recommend the best fit for the parcel.
Garden Style
Pathway Style
Manual Site Input
Draw a parcel and the main house on the map when parcel or building data is missing.
Placement Analysis
Search an address to run geometry-based model fitting.
Layout guidance will appear here after a candidate is found.
Performance timing will appear here after analysis runs.
Planning Overlays
Search an address to see state-specific rules
See complete development potential, financial projections, and export client-ready reports.
Run Full Feasibility Analysis →
This tool provides indicative results only and is not legal or planning advice.
Building footprint data sourced from Overture Maps (OSM + Microsoft ML).
Always verify with your local council before proceeding.
Tip: If the lot boundary looks wrong, click directly on the correct property on the map to re-query.