How Australia's housing will evolve as our population booms

Australia is on its way to having almost 50 million people. The latest population projections came out just last week and the Australian Bureau of Statistics (ABS) envisions a much bigger nation if certain criteria are met.

We just ticked over 25 million a few years ago and, despite falling birth rates, we can expect to be over 45 million by 2071 in the high scenario, the bureau says.

Chart showing information about housing and population.
(Source: supplied) · Jason Murphy

How will Australia look at that point? There are many changes we can expect but probably the most important one is a change in how we live. Houses are going to become rarer and apartments will be more and more common.

If we look at the biggest cities in the world, they are dense with apartments. Tokyo has almost no stand-alone homes. London is full of terrace homes and blocks of flats. New York is synonymous with skyscrapers but, even outside Manhattan, people live in apartment blocks of five or six stories.

In Australia, we already see this. Our biggest cities have far more apartments than our smaller ones. As the next chart shows, Sydney has mostly added homes that aren’t detached in the past decade.

Chart showing information about housing and population.
(Source: supplied) · Jason Murphy

The future of Australia is bigger cities, and bigger cities doesn’t just mean growing outwards at the edges. It means densifying the middle.

The alternative plan is spreading out. We could make a big push to have lots of Adelaide-sized cities instead of a few big cities. That way, more people could live on quarter-acre blocks.

But history is not usually kind to planned cities like that. Canberra certainly hasn’t grown fast. It’s nearly a century old and still modestly sized. The Gold Coast is an exception but, of course, not a great example of spread-out living. It is a high-rise city.

Also by Jason Murphy:

Fighting against centralisation is a losing game, I fear. The forces that make people move to cities are predominantly economic. You can specialise more and make more money and access better services. The economy of the future is one where those sorts of “agglomeration economies” will matter more and more; not less.

Cycle of life

One way we could reimagine a world of fewer houses and more apartments is not by raising kids in apartments, but by moving more often. The amount of time we live in houses might change. People might stay in apartments longer and longer throughout their 20s, live in a house while they have kids, and then move back to an apartment, rather than retiring in their house.