Suburb guide · 2117
Can I build a duplex or granny flat in Oatlands?
Oatlands sits in City of Parramatta's area under Parramatta Local Environmental Plan 2023. We ran 25 real Oatlands addresses through the checker: the typical block is 825 m² with 18.7 m of frontage, 20 of the 25 could add a granny flat, and 19 could carry two separate homes today.
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The typical Oatlands block
The middle block of the 25 we checked is 825 m² with 18.7 m of street frontage. The smallest was 211 m² and the largest 2,056 m². Zones in the sample: R2 (22), R3 (3).
The 25 blocks we checked, by land size.
What homes sell for in postcode 2117
Median sale prices for the whole of postcode 2117, January to March 2026. These cover every suburb sharing the postcode, not Oatlands alone, and they are not a value for any one block.
- Houses: $1.79m (11 to 30 sales, a small sample)
- Units and apartments: $751k (11 to 30 sales, a small sample)
Source: NSW Government Rent and Sales Report (Department of Communities and Justice), sales tables by postcode, NSW Government. Updated each quarter.
A granny flat
20 of the 25 blocks we checked could take one. Parramatta LEP cl 5.4(9) — the greater of 60 m² or 5% of the house’s total floor area, parking excluded. Separately, the state Housing SEPP allows a granny flat of up to 60 m² through the ten-day complying-development route on a lot of 450 m² or more with a 12 m frontage, where the land is not flood, bushfire or heritage constrained.
Dual occupancy (duplex) rules in Oatlands
19 of the 25 blocks we checked could carry two or more separate homes today.
Under Parramatta Local Environmental Plan 2023 a dual occupancy needs 600 m² and 15 m of frontage.
Of the 22 ordinary R2 blocks in our sample sitting outside the Low and Mid-Rise area — where that minimum is the only test that applies — 19 had the frontage and 21 had the land. 18 had both.
Both tests bite here in roughly equal measure, so a block needs to be unusual on two counts at once. That is why the number clearing them is small.
Low and Mid-Rise
None of the 25 blocks we checked fell inside the state Low and Mid-Rise area, so in this part of Oatlands the LEP minimums are what count. The boundary is a walking distance from a listed centre, so it can cut through a suburb — the checker reads which side of it your own address sits on.
What else turned up
1 of 25 were on bushfire-prone land; 1 of 25 carried a heritage listing or conservation area. Any of those takes a block out of the fast-track routes and into a full DA, so it changes the answer more than the lot size does.
How we got these numbers
We took 25 real Oatlands street addresses from the NSW geocoder and ran every one through the same engine this site runs for you, reading the planning controls live. Nothing here is modelled or estimated.
It is a sample, not a census. The addresses are a spread across what the geocoder returns, so treat these as "of the 25 blocks we checked" rather than a figure for every block in Oatlands. Your own block is the only one that answers for itself — that is what the box on the right is for.
Enter the address — lot, frontage, zone, constraints and what it can carry.