Granny Flats rules in Penrith

Building a granny flat in Penrith? Penrith City Council 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.

Penrith: assessed by Penrith City Council 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 Penrith

Penrith City Council is the authority for Penrith in Greater Western 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 Penrith City Council ↗ Full New South Wales rules →

Frequently asked questions

Do I need council approval for a granny flat in Penrith?

Often not. New South Wales allows a granny flat to proceed without a full development application when it meets the standards, and Penrith City Council 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 Penrith?

Penrith City Council is the consent authority for Penrith (Greater Western 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 Penrith can differ from the statewide summary and change over time; always confirm with Penrith City Council before starting work. Last reviewed: July 2026.

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