The precedent you need to understand
In November 2025, the NSW Government's Housing Delivery Authority (HDA) approved a proposal for two 40-storey towers at 9–11 Mawson Avenue, Bella Vista. The site had been rezoned only twelve months earlier under the Transit-Oriented Development program, which permitted three buildings of 8, 18, and 22 storeys — roughly 430 dwellings. The HDA-approved scheme allows approximately 900 dwellings on the same site. The TOD framework had been in force for one year.
Four months later, in March 2026, the Government advanced a State-led rezoning of the Cherrybrook Precinct that increases dwelling capacity from the original Place Strategy's ~3,200 homes to 9,350, with building heights from the original 5-storey cap up to 28 storeys in the town centre.
Different pathways — HDA at Bella Vista, State Significant Rezoning at Cherrybrook — but the same outcome: a freshly-adopted planning framework materially overridden within a year or two of being in force.
That's the pattern. If you own in Castle Hill, Norwest, or Kellyville — metro station precincts still working through the master planning process — the question isn't whether a similar override could happen to the frameworks governing your area. It's when, and what that means for your position.
What This Actually Means for Established Homeowners
Two things, which point in different directions and need to be held at the same time.
It doesn't mean your property value collapses. Increased density around metro stations, historically, supports property values in the surrounding established residential streets over a 3–5 year horizon. Infrastructure investment follows density — road upgrades, service expansion, improved transport frequency — and that investment flows into surrounding value. The data on this is consistent across Sydney metro precincts for the last fifteen years.
It does mean the current position is less stable than the planning controls suggest. If you've been making decisions based on the assumption that the TOD framework or local master plan defines what will be built near you, that assumption is weaker than it was a year ago. Bella Vista owners who bought in 2024 on the basis of 8/18/22-storey neighbours are now going to have 40-storey towers next door. They weren't wrong to rely on the gazetted framework — the framework changed under them.
For a homeowner in an established Hills District suburb, this changes the calculation in specific ways:
If you were planning to sell in the next 12–24 months, understanding your current position before any announcement affecting your suburb is materially more valuable than understanding it after
If you're staying, the medium-term value trajectory remains supported by the infrastructure and amenity that follow density
If you're holding as a hedge against uncertainty, the uncertainty has increased, not decreased — which is information
The School Catchment Point, Stated Accurately
One durable value driver in Cherrybrook — and across the Hills District — is positioning within comprehensive school catchments: Cherrybrook Public, Cherrybrook Technology High, Kellyville Ridge Public, Baulkham Hills North Public, and similar.
These catchment premiums are driven by owner-occupier families who need to be inside a specific zone. That's structural demand. It held through the 2022–2024 rate cycle, held through the 2025 softening at the upper end of the Sydney market, and continues to hold now.
Worth clarifying because the commentary on this is often sloppy: James Ruse Agricultural High has no residential catchment — entry is by selective test. Baulkham Hills High is partially selective. The catchment premium in the Hills District runs through the comprehensive schools specifically. Agents who cite James Ruse as a catchment driver are either being sloppy or hoping the reader doesn't know the difference.
What to Do If You Own in Castle Hill, Norwest, or Kellyville
Get an accurate read on your current market position, specifically:
What comparable properties in your street and suburb have actually sold for in the last 90 days
How your property compares on presentation, catchment position, and access
Where your position sits relative to the broader suburb trend, which has softened at the upper end and held at the mid-range
This is the work that separates homeowners who make good decisions in a shifting environment from those who are forced into decisions by events. The Bella Vista–Cherrybrook pattern says the environment is shifting. The question is whether you know where you stand while that's happening.
Confidential Market Assessment
Current sales data applied to your property. No algorithms, no Domain estimates, no 2022 peak figures. Recent actual comparables, honestly interpreted.
No cost, no obligation, no pitch.
→ Maaz Goda: 0415 783 924 | reply to this page to request your assessment.
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