If you live in one of the newer Camden Council estates, you have probably noticed how quickly the area has filled in. Granny flats in Oran Park and Gregory Hills are getting popular for good reason. Blocks here are modern and well planned, but they are also smaller than the older Western Sydney quarter acre, so a compact secondary dwelling that uses every metre well is the smart way to go.
This guide walks through what works on these estate blocks, how the design covenants come into it, and why a factory-built home suits a tidy new street where your neighbours are close by.
Both suburbs sit in the Camden local government area, part of the South West Growth Area that has gone from paddocks to thousands of new homes in not many years. The streets are narrow, the front setbacks are uniform, and most blocks land somewhere between roughly 300 and 500 square metres.
That smaller footprint is exactly why a 60 square metre granny flat fits so well. Under the NSW Housing SEPP, 60 square metres of internal floor area is the maximum for a secondary dwelling, and on a young family block that size gives you a real two-bedroom home without swallowing the whole backyard. You can still keep a clothesline, a bit of lawn and a spot for the kids.
Estates like Oran Park come with design guidelines from the developer, on top of normal approval rules. These covenants often cover roof pitch, render and cladding colours, fencing and how much of the block can be built on. They are there to keep the streetscape consistent.
A modular home actually plays nicely with covenants because the finishes are chosen up front and locked in. We can match a render look, a Colorbond roof colour or a particular window style before the home ever leaves the factory. It pays to check your estate's guidelines early, then bring them to us so the design lines up from day one.
On a tighter estate block, a clever floor plan matters more than raw size. A couple of our designs are made for this. Our compact two-bedroom Black Wattle 50 packs two real bedrooms into a small footprint, which leaves more of the yard open. For something with a bit more room and a separate laundry, the two-bedroom Snow Gum 60 with its island bench kitchen is a favourite for young families who want the granny flat to feel like a proper home.
If you would rather see the full lineup, our range of modular granny flats and homes has plans from a small studio up to the full 60 square metre two-bedroom layouts.
Most residential blocks of 450 square metres or more can have a granny flat approved as a Complying Development Certificate, or CDC. A private certifier signs it off instead of a full council Development Application, and that usually takes about 10 to 20 business days rather than months.
Some of the smaller estate blocks in Oran Park and Gregory Hills sit under 450 square metres, and those go through a council DA instead. The honest answer is that it depends on your exact block, so the first step is always to confirm the lot size and check the criteria. If you want a clear explanation, our post on how granny flat approval works in NSW breaks it down.
On a narrow estate street with houses close together, the last thing you want is months of trucks, trades and mess out the back. Our homes are built in our factory at Bringelly in about eight weeks, then transported and installed on site in about two days.
That short install window is a real advantage when your neighbours are a few metres away. The backyard is only properly occupied for a couple of days, the build quality is consistent because it happens under cover, and there is far less disruption to your street. Bringelly is just up The Northern Road from Oran Park, so delivery to these suburbs is quick and straightforward.
As a guide for 2026, a complete finished granny flat in Sydney usually lands between about $120,000 and $300,000, with a base one or two-bedroom build closer to $110,000 to $150,000. The big swings come from site costs such as service connections (around $15,000 to $30,000) and any rock you hit during excavation.
Estate blocks are often a help here because services are usually close and the land is flat and clear, which can keep site costs down. For the full picture, see our breakdown of granny flat costs in NSW for 2026. The only way to get a real number is a fixed quote based on your block.
Yes. A 60 square metre design can hold two genuine bedrooms, a bathroom, a laundry and an open living and kitchen area. The trick is a smart layout, which is where a tested floor plan earns its keep.
Usually not. Covenants control how it looks, not whether you can build one. We match finishes to your estate's guidelines so the home suits the street.
Our head office and display centre is at 1355 The Northern Road, Bringelly, only a short run from Oran Park and Gregory Hills, so transport is quick.
If you are weighing up a granny flat in Oran Park or Gregory Hills, the best next step is a quick chat about your lot size, your estate covenants and which design fits. Have a look at our modular granny flats and studios, then contact our team for a fixed quote built around your site. We have been building modular and transportable homes across NSW for over 30 years, and we are right on your doorstep.
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