Suburb guide · 2076
Can I build a duplex or granny flat in Wahroonga?
Wahroonga sits in Ku-ring-gai Council's area under Ku-ring-gai Local Environmental Plan 2015. We ran 25 real Wahroonga addresses through the checker: the typical block is 974 m² with 18.5 m of frontage, 25 of the 25 could add a granny flat, and 7 could carry two separate homes today.
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The typical Wahroonga block
The middle block of the 25 we checked is 974 m² with 18.5 m of street frontage. The smallest was 685 m² and the largest 3,247 m². Zones in the sample: R2 (17), C4 (7), R3 (1).
The 25 blocks we checked, by land size.
What homes sell for in postcode 2076
Median sale prices for the whole of postcode 2076, January to March 2026. These cover every suburb sharing the postcode, not Wahroonga alone, and they are not a value for any one block.
- Houses: $2.40m (43 sales)
- Units and apartments: $1.26m (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
25 of the 25 blocks we checked could take one. Ku-ring-gai LEP cl 5.4(9) — the greater of 60 m² or 25% 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 Wahroonga
7 of the 25 blocks we checked could carry two or more separate homes today.
dual occupancies are not in the R2 land-use table of the Ku-ring-gai LEP, so outside the state Low and Mid-Rise catchment they are not permitted; inside it, cl 4.1A (inserted 2025) sets 1,015 m² and a split into two titles needs 507.5 m² per lot (cl 4.1B) — a planner confirms how the state rule and the LEP figure interact on your lot
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 Wahroonga 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
6 of 25 were on bushfire-prone land; 6 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 Wahroonga 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 Wahroonga. 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.