New research from Macquarie University found that in suburbs where knock-down rebuilds are happening, front gardens have shrunk by an average of 46%. Driveways? Up 57%. Tree canopy lost? 62%.
No single development looks dramatic. But zoom out over a decade and the character of entire suburbs is changing — more concrete, less green, higher urban heat.
As someone working in Sydney property every day, this raises some important questions for buyers and investors right now:
🔹 Land-to-house ratio — a bigger house on a smaller footprint isn’t always better value long term
🔹 Knock-down rebuild corridors (Ryde, Parramatta, Hills District) are transforming fast
🔹 Green space scarcity is becoming a real premium — retained gardens and canopy trees are increasingly rare
NSW still needs to build 377,000 homes by 2029. The question isn’t just how many — it’s what kind.
If you’re buying in Western or Northern Sydney, the suburb you’re looking at today may look very different in 5 years.
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