Not surprisingly, when demand grows faster than supply can keep up with, prices rise. The rise in the cost of newly built homes, and the cost of renting, have contributed significantly to the general cost-of-living crisis.

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So, why has our housing industry become so slow to respond to increased demand? Treasury says the causes are “multifaceted, complex and affect all stages of the housing construction process, including all levels of government and industry”.

One way to improve the market’s response to greater demand is to accelerate the construction process. But Treasury says that completion times for apartments, townhouses and detached houses actually worsened by 39 per cent, 34 per cent and 42 per cent respectively over the 10 years to June 2023.

Calculations (or, if you want to sound more scientific, “modelling”) by a federal government agency says that, over the next six years, the nation’s existing unmet demand will never be satisfied unless completion times are speeded up. In six years’ time, we’ll still have a backlog of about 39,000 dwellings.

Treasury says the expectation that churning out homes faster will help to lower house prices is supported by empirical research. One study found that those OECD countries that built more housing over the 15 years to 2015 experienced lower real growth in house prices.

Another study showed that adding an extra 50,000 homes a year for a decade could reduce house prices by up to 20 per cent.

So, what can be done to increase the housing industry’s annual output? Treasury says planning and zoning restrictions can limit the speed at which land is made available.

Delays in approving development applications by local councils can be excessive. I think councils and government departments are monopolists and, like all monopolists, they take advantage of the lack of competition.

Private sector monopolists whack up their prices and don’t worry about the quality of the service they provide. Public monopolists make you jump through hoops that aren’t strictly necessary, and they fix your problem in their own good time.

I wonder whether, over all these years, those outfits have ever had much pressure on them to lift their game. If that changed, I’m sure we could get more homes built per year.

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Treasury says average times for the approval of development applications vary by state, with Victoria and NSW experiencing the longest waiting times early this month of 144 and 114 days, respectively.

It shouldn’t surprise you that Treasury wants housing to be delivered in well-located areas where the demand is greatest.

Dense development in the “missing middle” of major cities, where households can reside closer to jobs in areas with higher quality amenities and infrastructure, has been limited by planning and zoning restrictions and slow release of infill land, Treasury says.

Global supply constraints and price shocks on imported building materials associated with the pandemic have added to the cost of construction, driving up the price of newly built homes. Although prices aren’t rising as fast as they were, they haven’t fallen back.

Shortages of building labour have also increased the prices of newly built homes and slowed the pace of construction. The growth in non-dwelling construction activity has drawn labour away from home building. The productivity of labour in construction has not improved since the early 2000s.

The industry blames these shortages on the drop-off in rates of skilled migration during the pandemic. But I wonder if the deeper problem is that the former ready availability of imported labour tempted the industry to save money by failing to train as many apprentices as they should have.

So, what’s the Albanese government doing about this mess? It’s finally grasped the nettle and is spending big – $32 billion, including $6 billion in this month’s budget – to “address historical underinvestment in the housing system” and build 1.2 million new, well-located homes. We’ll see how they go.