Suburb guide · 2775
Can I build a duplex or granny flat in Central Macdonald?
Central Macdonald sits in Hawkesbury City Council's area under Hawkesbury Local Environmental Plan 2012. We ran 25 real Central Macdonald addresses through the checker: the typical block is 76,857 m² with 255.2 m of frontage, 0 of the 25 could add a granny flat, and 0 could carry two separate homes today.
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The typical Central Macdonald block
The middle block of the 25 we checked is 76,857 m² with 255.2 m of street frontage. The smallest was 1,199 m² and the largest 406,728 m². Zones in the sample: C4 (25).
The 25 blocks we checked, by land size.
A granny flat
0 of the 25 blocks we checked could take one. Hawkesbury LEP cl 5.4(9) — the greater of 60 m² or 10% 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 Central Macdonald
0 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 Hawkesbury LEP, so outside the state Low and Mid-Rise catchment they are not permitted; inside it the state 450 m² / 12 m rule applies
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 Central Macdonald 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
25 of 25 were on bushfire-prone land; 2 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 Central Macdonald 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 Central Macdonald. 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.