Granny Flats rules in Canterbury-Bankstown

Building a granny flat in Canterbury-Bankstown? City of Canterbury-Bankstown applies the New South Wales planning framework. Here's what that means locally — plus the overlays worth checking on your specific block.

Fast-track available

Often approved without a full DA

Yes. On most residential lots of 450 m² or more you can build a 60 m² secondary dwelling, often as complying development approved by a certifier in around 20 days rather than through a full development application.

Canterbury-Bankstown: assessed by City of Canterbury-Bankstown under the New South Wales rules below.

Approval pathway: There are two routes under the State Environmental Planning Policy (Housing) 2021: a fast Complying Development Certificate (CDC) issued by council or an accredited certifier when your lot and design meet the Codes SEPP standards, or a Development Application (DA) lodged with council if they do not.

Key rules at a glance

Minimum lot size	450 m²
Maximum floor area	60 m² (internal living area)
Minimum lot width / frontage	12 m at the building line
Setbacks	Rear 3 m, side 0.9 m (complying development)
Maximum height	8.5 m
Can it be rented?	Yes - to anyone
Approval type	Complying development (CDC) or DA

Overlays can change your eligibility

Heritage, flood and bushfire controls on your specific lot can remove the fast-track and require a full application — even when the general rules say you're fine.

HeritageFloodBushfireForeshoreEnvironmental

Check your address for overlays →

Granny flats in Canterbury-Bankstown

City of Canterbury-Bankstown is the authority for Canterbury-Bankstown in Sydney. The statewide New South Wales rules above set the baseline; the council can apply extra local controls, and heritage, flood or bushfire overlays on your lot can change what's allowed.

Visit City of Canterbury-Bankstown ↗ Full New South Wales rules →

Frequently asked questions

Do I need council approval for a granny flat in Canterbury-Bankstown?

Often not. New South Wales allows a granny flat to proceed without a full development application when it meets the standards, and City of Canterbury-Bankstown follows that framework. But local overlays — heritage, flood or bushfire — can remove the fast-track, so check your exact address before you rely on it.

Which council approves a granny flat in Canterbury-Bankstown?

City of Canterbury-Bankstown is the consent authority for Canterbury-Bankstown (Sydney). You can review local planning controls on the council website and lodge through your state planning portal.

Can I rent out a granny flat in NSW?

Yes. A secondary dwelling in NSW can be rented to anyone, not just family, provided it was approved as a separate dwelling.

Sources

Last reviewed: July 2026. Rules can change — verify with your council before starting work.

Related building rules

General guidance only — not professional planning advice. Local requirements in Canterbury-Bankstown can differ from the statewide summary and change over time; always confirm with City of Canterbury-Bankstown before starting work. Last reviewed: July 2026.

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