The housing debate in political circles and the media generally pits greenfield housing vs a 90-storey tower. However, if the discussion can also embrace ‘gentle density’ it can play a powerful role in addressing the polar extremes and unlocking a range of housing solutions in our existing suburbs.

What is gentle density?

Gentle density refers to medium-density housing (such as townhouses, duplexes, triplexes and micro-lot homes) integrated subtly within established suburbs without compromising their existing charm or character.

Australia urgently needs 1.2 million new homes within the next five years just to meet projected population growth.

Solving Australia's housing crisis requires multiple tools; gentle density is one critical approach that has been underutilised. Embracing this concept would create vibrant, sustainable and future-proofed communities while preserving the character and soul of existing suburbs.

Australia’s housing crisis has reached a tipping point

Demand continues to outstrip supply, affordability has fallen off a cliff, and the dream of home ownership is slipping away for many everyday Australians.

For years we’ve talked about building more homes, but the real question is, where, how and what kind? A compelling part of the puzzle is to embrace gentle density to unlock the ‘missing middle’ — those often-overlooked medium-density housing types that could fill the gaping hole in our urban housing mix.

Let’s break that down because the implications are powerful

Gentle density is about threading more diverse, medium-density housing into our existing suburbs without destroying their character.

It’s the townhouses, duplexes, triplexes and micro-lot homes that sit quietly between detached homes and high-rise towers. It's the middle ground that offers affordability, flexibility and choice and right now, it’s largely missing from our urban development toolkit.

It’s not about cramming the suburbs

It’s about optimising land use in a way that feels natural, not forced. Gentle density is about building more homes in existing suburbs – close to education facilities, jobs and transport – while maintaining the charm of our communities.

And that makes sense. Our current zoning laws often leave Australians with only two options: a house on the outer city fringe, or a tiny apartment in a city tower.

Both are important to solve our housing crisis, but we also need a greater diversity of housing options for our growing cities.

The scale of the challenge

We need to build 1.2 million homes over the next five years just to meet expected population growth, and that’s a conservative estimate.

Infrastructure, transport links, job access, schools – all these things take time and money to build. Yet we already have thousands of well-serviced suburbs sitting underutilised. 

Current zoning laws are out-dated and restrictive, often leaving Australians with limited choices between sprawling houses or towering apartment blocks.

Gentle density bridges this gap by supporting middle-ground housing options such as townhouses and small-scale apartments. In other words, the infrastructure is already there; we just haven’t been using it wisely.

Now is the right time to embrace it 

HIA recently released a report, Unlocking the Missing Middle, which lays out a strategy for more flexible, responsive planning, one that streamlines approvals and removes barriers to small-to-medium scale developments.

Key proposals include:

• Reforming zoning laws to allow greater diversity of housing forms in established suburbs
• Streamlining planning approvals for well-designed medium-density housing
• Incentivising gentle infill to take pressure off greenfield sites
• Prioritising development in areas with existing infrastructure — close to jobs, education and public transport.

Importantly, we are not calling for radical changes, but smart, surgical ones. Planning must be able to deliver on the big picture and use the right tools in the right locations.

This means balancing housing needs both in the inner suburbs and greenfield areas.

The opportunity in the missing middle

Gentle density offers a pathway to more affordable home ownership while preserving the essence of our communities.

It's well-suited to Australia’s evolving demographic mix: think downsizing Baby Boomers, young professionals, single-person households, and essential workers — people who don't need (or can’t afford) a big house, but don’t want to live in a shoebox either.

Yet in many of our most desirable, well-located suburbs, planning schemes haven’t kept pace with modern housing needs. That’s led to underutilised land, restricted supply and inflated prices.

Unlocking this missing middle could be one of the most efficient, least disruptive ways to increase supply quickly.

A call for leadership and bold thinking

What we are calling for from our report is urging state and local governments to act now, arguing that it’s time to shift from talking about solutions to actually implementing them.

By streamlining approval processes and allowing for more flexible zoning, we can unlock the potential of our existing suburbs alongside greenfield housing and create vibrant, liveable communities for generations to come.

That’s the kind of long-term thinking we need, not just for today’s housing challenge, but to future-proof our cities for tomorrow.

Final thoughts

Solving Australia’s housing crisis isn’t about one big silver bullet.

• It’s about using every tool available and gentle density is a tool we’ve neglected for too long
• It’s time to rethink the way we use our urban land
• It’s time to stop being afraid of change, and start planning for smarter growth, not just more of it.

By embracing gentle density, we can deliver more homes, more options and more opportunities, all while keeping the soul of our suburbs intact.

Read the full report

First published on 28 May 2025