Land makes the housing market different, so changing planning rules won’t fix affordability

The thing about new housing is you need land to build it on. Developers are able to control its release at a rate that doesn’t put downward pressure on prices, writes …

Brian Feeney, The University of Queensland

A commonly held view is that changing planning rules could significantly increase housing supply and hence make housing more affordable.

Recent commentary, including in The Conversation, repeats this.

It’s a view that glosses over the special features of land, which allow property developers to control housing supply to a significant extent.

To understand what’s going on, we need to look at why land makes the housing market different from any other.

Economic theory and the special features of land

Land has special features that other goods don’t usually have. farm land country

The most fundamental of these features is fixed location.

What’s more, land does not physically degrade over time.

As a result, it doesn’t have to be sold but instead can be withheld from sale without financial cost.

These features are important when considering the application of standard supply-demand theory to housing markets.

Economic theory says increasing the supply of a good will lower the price for a given level of demand.

Like a lot of economic theory, this is based on simplifying assumptions.

The following assumptions are particularly relevant when considering land:

  • the good is homogeneous
  • all market participants have full information about the market
  • no participant has an undue influence on the market
  • there are no barriers for new market participants.

However, we know that land is not homogeneous. 

investor-enquiry-form

Location is particularly important.

And property developers generally have much more knowledge of the market than individual buyers, potentially giving developers undue influence.

The capacity of developers to withhold land from sale and the fact that new developers wanting to enter the market face significant barriers – importantly the financial capacity to hold back land when demand and sales are reduced – are also at odds with the assumptions of supply-demand theory.

UK economist Josh Ryan-Collins notes that current economic theory does not differentiate between land and capital (such as machinery).

This may well be one of the main reasons the special features of land are often overlooked in discussions about housing supply.

Governments don’t control housing supply

In the past, governments developed more housing directly, but over the past 20-30 years the role of government has been mainly to enable private developers to provide housing.

Governments may release enough land for the expected population, but private developers decide how much housing is offered for sale at any time.

It’s no secret that, for larger residential estates in particular, demand dictates the rate at which lots are released to market. Tide Property Market

This is a logical business strategy, but much of the commentary on housing supply fails to acknowledge this.

In the Gold Coast region, for example, where a relatively small number of larger estates provide most of the new residential land, the median price of vacant residential land has remained remarkably stable since the GFC despite large fluctuations in the number of sales.

This suggests something other than the standard supply-demand theory is operating.

As noted above, developers of new estates in outer areas can “drip-feed” the market to keep prices up.

For new apartments in established suburbs, off-the-plan sales allow developers to test the market before building.

If interest in the apartments at prices set by the developer is insufficient, the project will not go ahead. Of course, there can still be an oversupply of apartments if future demand is overestimated.

Planning rule changes won’t make much difference to supply

Markets for residential land are distorted by three main factors:

  • location is very important Off-the-plan
  • land is a not a homogeneous good
  • developers can influence supply.

This means that changing planning rules is unlikely to make much difference to housing supply or affordability.

Housing supply can’t readily be increased without direct government construction.

Even then developers will be likely to respond by restricting overall housing supply if they can.

With supply restricted, price is significantly influenced by demand factors.

These include finance interest rates, tax concessions and buyers’ expectations of future capital gains.

Therefore, policy that focuses on managing demand factors offers much more hope of improving housing affordability than do changes to planning rules.


Brian Feeney, Adjunct Fellow, School of Earth and Environmental Sciences, The University of Queensland

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Apart from our regular team of experts, we frequently publish commentary from guest contributors who are authorities in their field.


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