Granny Flat FAQs: Permits, Size Limits & Setback Rules in Victoria

Getting your head around Victoria's granny flat rules can be confusing. Here are the most frequently asked questions, answered clearly.

What's the maximum size?

There's no single maximum size in Victoria — it depends on your lot size, zoning, and site coverage limits. However, most DPUs are built between 40m² and 70m².

Do I need a planning permit?

In most residential zones, a DPU doesn't need a planning permit but does need a building permit. Check with your local council as some have specific overlays that trigger planning requirements.

How far from boundaries?

Standard setbacks under ResCode are 1 metre from side and rear boundaries, but this can vary based on wall height and length. Your building surveyor will confirm the exact requirements for your site.

Can I have a separate address?

DPUs in Victoria typically share the address of the main dwelling. If the property is subdivided (which is a separate, more complex process), separate addresses are possible.