Granny Flat FAQs
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The questions we get asked most about building a granny flat
Do I need council approval to build a granny flat?
Usually not. Under the NSW Housing SEPP, a granny flat that meets the complying development standards can be approved through a Complying Development Certificate (CDC) from a private certifier, much faster than a DA. If your site doesn’t meet the criteria, you can still apply for a Development Application (DA) through Council.
What size block do I need?
For a CDC, your lot must be at least 450m² and at least 12m wide at the building line. Smaller or narrower lots may still be approved through a DA, depending on your council.
How big can a granny flat be?
Up to 60m² of internal floor area. Garages, carports, decks and patios are not counted in the 60m².
Can I subdivide or sell the granny flat separately?
No. A granny flat stays on the same title as the main house and the lot can’t be subdivided. If you want separate titles, look at a dual occupancy instead.
How many granny flats can I build on one block?
One. The Housing SEPP allows one principal dwelling and one secondary dwelling (granny flat) per lot.
Do I need to provide extra parking?
You don’t have to, although tenants value it. Our Neilson design includes a lock-up garage.
How long does it take?
Once approved and on site, a typical granny flat takes around 12 to 16 weeks to build, depending on site conditions and weather.
How much does a granny flat cost?
Most 60m² two-bedroom granny flats in NSW fall between $160,000 and $220,000 turnkey, depending on the site and finishes. See our full Price Guide.
Can I build a granny flat and a new house at the same time?
Yes, a new main home and granny flat can be approved together on a single CDC. We build both.
Can the granny flat have separate meters?
Separate electricity metering can be arranged. Water and sewer are typically shared with the main house. We’ll confirm what’s possible for your site.
What’s included in the price?
Our standard inclusions cover everything from a 5kW split system air-conditioner to tiled wet areas and downlights throughout. See the full Inclusions list.
Where do you build?
Newcastle, Lake Macquarie, the Hunter Valley and the Central Coast.