Granny flat rules in Canterbury-Bankstown
City of Canterbury-Bankstown assesses these under the New South Wales rules below. Heritage, flood or bushfire mapping on your own lot can change what you need to apply for.
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.
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 |
| Bush fire prone land | Not a barrier to complying development. Secondary dwellings have their own complying development pathway in Housing SEPP 2021 Chapter 3 Part 1 Division 3, and s 57 allows a CDC on a lot containing bush fire prone land where the build meets Planning for Bush Fire Protection, the dwelling has direct access to a public road and sits within 200 m of it, and there is an adequate water supply. That section stops at land in BAL-40 or the Flame Zone, which a council or an RFS-recognised bush fire consultant determines under s 57(4). Construction to AS 3959 applies. |
Heritage, flood, foreshore and environmental controls on your specific lot can remove the fast-track and require a full application, even when the general rules say you're fine. Bushfire mapped on your lot adds requirements, but does not by itself close the fast-track route.
How often this applies in Canterbury-Bankstown
These are the overlays that can remove the fast-track, measured across every parcel in Canterbury-Bankstown from the same data behind our zoning map. They describe the council, not your block, and they are counted separately — one parcel can carry more than one, so they cannot be added together.
| Overlay | Share of parcels | What that means here |
|---|---|---|
| Heritage | 2.79% | 2,727 parcels flagged. The rest are mapped and sit outside it. |
| Flood | 0% | 3 parcels flagged. 100% of the council has no flood mapping, so we can't say for those parcels. |
| Bushfire | 5.17% | 5,046 parcels flagged. The rest are mapped and sit outside it. |
The most common zone in Canterbury-Bankstown is Low Density Residential, covering 56.0% of its 97,643 parcels. What you can build is decided by your own lot's zone, not the council's most common one.
Measured from our mapped parcel data, snapshot taken 2026-11-08. Overlays are checked live for a specific address on the address tool.
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 →
See the Canterbury-Bankstown zoning map →, showing every parcel in Canterbury-Bankstown by zone, lot size and mapped constraints.
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
- Secondary dwellings - NSW Planning ↗
- State Environmental Planning Policy (Housing) 2021 - NSW legislation ↗
- SEPP (Exempt and Complying Development Codes) 2008 ↗
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.
Talk to a town planner in Canterbury-Bankstown
This page covers the general rules. A qualified town planner can tell you what applies to your block, including the zone, overlays and approval path, before you spend money on drawings.
- Qualified, practising town planners
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