Can I build a granny flat on any Melbourne block?

No. Victorian Small Second Dwelling rules require minimum lot size, frontage, and rear-yard depth. Heritage Overlays (HO), Bushfire Management Overlays (BMO), and some Design and Development Overlays (DDO) can block construction outright. The PremiumRea Granny Flat Checker tests your specific address against all major overlays in seconds.

What size granny flat fits in my backyard?

Three standard sizes are tested: 30m² studio (smallest, rents $340-370/week), 60m² one-bedroom (rents $480-500/week), and 60m² dual-living configuration (rents $650-700/week combined). The tool computes the maximum buildable rectangle in your rear yard accounting for the 3m rear setback, side setbacks, and easements, then lists which sizes physically fit.

How much does a granny flat cost to build in Melbourne?

PremiumRea offers fixed-price granny flat construction: 30m² studio from $110,000 + GST, 60m² one-bedroom from $160,000 + GST, 60m² dual-living from $200,000 + GST. Includes building permits, construction, and compliance certification. Gross rental yield averages 18% for the 30m² studio.

Do I need a planning permit for a granny flat in Victoria?

Most Small Second Dwellings (granny flats) in Victoria are exempt from a planning permit if they meet code: ≤60m², ≤2 bedrooms, complies with rear/side setbacks, and is on a lot ≥300m² in most zones. A building permit is still required. Heritage and bushfire overlays add planning permit requirements. The PremiumRea tool flags whether your block needs a planning permit.

Is the PremiumRea Granny Flat Checker free?

Yes — the feasibility check tool is free with no signup. It uses public Vicmap zoning, overlays, and titles data combined with PremiumRea's Small Second Dwelling rule engine. Detailed architectural design, permits, and construction quotation are paid services.

Granny Flat Feasibility Checker | Can My Backyard Fit One?

Selected lot

Neighbouring lots

Street-facing edge (front yard)

Existing building (+0.5m buffer)

Easement (lot + neighbours)

Elevation contour (major = 10m)

Buildable zone (1m from boundary)

Fit rectangle

Can my backyard fit a granny flat?

Enter your address. We'll pull the official VicMap lot boundary, existing building footprint and planning overlays, subtract Victorian setback rules, and try to fit each of our three granny flat products in the remaining yard.

Three products: 30m² studio · 60m² two-bedroom · 60m² dual living.

Indicative only — not planning advice. Final buildability depends on site survey, council discretion, and professional drawings. Full disclaimer

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