Yes, many Oakhurst properties may be suitable for a granny flat, but eligibility depends on the individual block. Under the NSW Housing SEPP, a detached secondary dwelling can qualify for Complying Development (CDC) on a lot of at least 450m², provided the site and design meet the required standards. Oakhurst is within Blacktown City Council and includes R2 Low Density Residential land, where secondary dwellings are permitted under the Housing SEPP. Local property records show established blocks ranging from around 450m² to 650m² and above, although smaller or subdivided lots can occur, so the property should always be checked individually. A granny flat is generally planned around a 60m² floor-area limit, subject to the applicable planning controls. Before choosing a design, also check flood and overland-flow mapping, as Blacktown City Council’s wider Eastern Creek catchment has mapped flood constraints that can affect development on individual properties.
Get inspiration from our recent granny flat projects across Oakhurst and surrounds — and see how we’ve turned different properties into practical new spaces.
Oakhurst is particularly well suited to homeowners who want more space for family without having to buy another property. At the 2021 Census, 85.3% of Oakhurst households were family households, compared with 71.2% across NSW, and the suburb averaged 3.3 people per household. Housing is also overwhelmingly low-density, with 95.2% of occupied dwellings being separate houses, giving suitable properties greater potential to make use of existing backyard space. Oakhurst also sits within reach of the Mount Druitt Strategic Centre and the growing Marsden Park employment area, where industrial development already supports thousands of jobs and further employment growth is planned. For established homeowners, a granny flat can provide independent accommodation for ageing parents or adult children now, with the flexibility for rental use or downsizing later.
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The three things that shape a granny flat build in Oakhurst: the planning rules, the ground you’re building on, and what the market gives back.
Median house price in Oakhurst
Typical granny flat rent
Key local landmark
your block
nearest station
A granny flat in Oakhurst can be approved through a private certifier as complying development when the lot is 450m2 or larger, the secondary dwelling is no more than 60m2 (or 25% of the main house, whichever is less), and setbacks, height and landscaping meet Housing SEPP 2021 standards. This pathway typically takes 10 to 15 business days once documentation is complete. Bushfire prone land does not rule out a CDC, but the design must meet the mapped Bushfire Attack Level, so the RFS map is the first thing we check. Blocks inside a flood planning area can still qualify, but floor levels and fill must meet the council's flood controls, which we check against the flood certificate before design.
Not meeting one complying development requirement does not rule a project out. Where a block in Oakhurst is under 450m2, sits in a heritage conservation area, or is affected by a flood or bushfire control, a development application can be lodged with Blacktown City Council. Assessment times are longer than a CDC, but the council does approve secondary dwellings through this route.
Oakhurst is administered by Blacktown City Council and assessed under the Blacktown LEP 2015. The whole suburb falls within the one council area. Granny Flats X confirms the consent authority for your specific block during the initial property assessment.
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The things Oakhurst homeowners ask us most. Can’t find yours? Call us — we’ll give you a straight answer.
Usually 12-14 weeks from approval. We fast-track the council paperwork.
Yes. Most Oakhurst blocks support 60m² 2-bedroom layouts.
Yes, but we handle the entire approval process for you.
