Suburb guide · 2047
Can I build a duplex or granny flat in Drummoyne?
Drummoyne sits in Canada Bay Council's area under Canada Bay Local Environmental Plan 2013. We ran 25 real Drummoyne addresses through the checker: the typical block is 415 m² with 10.6 m of frontage, 7 of the 25 could add a granny flat, and 10 could carry two separate homes today.
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The typical Drummoyne block
The middle block of the 25 we checked is 415 m² with 10.6 m of street frontage. The smallest was 159 m² and the largest 703 m². Zones in the sample: R2 (14), R3 (10), E1 (1).
The 25 blocks we checked, by land size.
What homes sell for in postcode 2047
Median sale prices for the whole of postcode 2047, January to March 2026. These cover every suburb sharing the postcode, not Drummoyne alone, and they are not a value for any one block.
- Houses: not published (10 or fewer sales this quarter)
- Units and apartments: $1.40m (37 sales)
Source: NSW Government Rent and Sales Report (Department of Communities and Justice), sales tables by postcode, NSW Government. Updated each quarter.
A granny flat
7 of the 25 blocks we checked could take one. Canada Bay LEP cl 5.4(9) — the greater of 60 m² or 43% 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 Drummoyne
10 of the 25 blocks we checked could carry two or more separate homes today.
Under Canada Bay Local Environmental Plan 2013 a dual occupancy needs 450 m² and 14 m of frontage.
Only 6 of the 25 blocks we checked were ordinary R2 land outside the Low and Mid-Rise area, which is too few to read anything into — most of Drummoyne in our sample was zoned or mapped some other way.
Low and Mid-Rise
15 of the 25 blocks sat inside the state Low and Mid-Rise area — within about an 800 m walk of a listed centre or station. Inside it the Housing SEPP overrides the LEP minimums: a dual occupancy on 450 m² with a 12 m frontage, terraces on 500 m² / 18 m, townhouses on 600 m² / 12 m and a manor house on 500 m² / 12 m, up to 9.5 m. That is what lifts the two-homes figure above; a block one street outside the line gets the LEP figure instead.
What else turned up
14 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 Drummoyne 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 Drummoyne. 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.