Microzoning - Can Small Changes Make a Big Difference?

As the housing crisis intensifies across Australian cities, we continue to see the same solutions recycled—high-density towers in CBDs, greenfield estates on the fringes, and political debates that rarely lead to material change. In a recent article,  “Small changes making a big difference – place-based microzoning”, NSW Government Architect Abbie Galvin offers a practical and overdue alternative.

At its core, the piece argues that we’ve underutilised one of the most obvious solutions to our housing shortfall: the space already within our cities. Galvin’s focus is the “missing middle”—a phrase often mentioned but rarely acted upon. Medium-density housing such as terraces, duplexes, and low-rise walk-ups has been effectively zoned out of many suburbs due to outdated planning codes, political resistance, and community fears.

Unlike broad rezoning proposals that often spark backlash, Galvin’s idea of place-based microzoning invites a more nuanced, collaborative approach. The concept is simple: allow subtle zoning changes tailored to local character, topography, and infrastructure capacity, while still enabling housing growth. Instead of forcing a one-size-fits-all model, microzoning respects the fabric of each community.

Importantly, Galvin doesn't just call for theory—she points to feasibility studies and design reviews carried out in partnership with industry stakeholders. These studies found that gentle increases in density (from 10 to 25 dwellings per hectare) are both viable and compatible with existing neighbourhood character. It’s not about blanket redevelopment. It’s about thoughtful, street-by-street planning.

This approach feels far more aligned with how change actually happens on the ground. Investors, developers, and homebuyers alike are drawn to certainty and community support. Microzoning provides a clear framework—something that has been missing from the current patchwork of planning schemes.

The other critical takeaway from Galvin’s article is that if we don’t address the feasibility gap, even the best-intentioned policy reforms will fail. Many current planning codes require setbacks, private open space, or parking which render projects economically unviable. A place-based model allows councils to adjust those settings locally, making projects not just possible, but practical.

Of course, there are still challenges. Community buy-in is essential, and many councils have been reluctant to embrace even modest increases in density. Yet Galvin’s framing—that microzoning can actually protect and enhance local character—offers a constructive pathway forward. This isn't about bulldozing suburbs, destroying heritage overlays or building hundreds of high rises; it is about future-proofing communities with smart effective design and mindful engagement.

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