When the Federal Government expanded its low-deposit home guarantee in October, the intention was straightforward: help more first home buyers enter the market with just a 5 per cent deposit.

But early data is now pointing to a familiar outcome.

Rather than improving affordability, the policy appears to have pushed the last remaining affordable homes further out of reach.

What the data is showing

New analysis from property research firm Cotality shows that price growth has been strongest in the lower-priced segments of the market that sit inside the scheme’s price caps.

In the December quarter:

Homes below the Home Guarantee Scheme price thresholds increased by 3.6 per cent.

Homes above the thresholds rose by 2.4 per cent.

That divergence is significant.

It shows demand is being concentrated into a narrow band of eligible housing, the very stock first home buyers are competing hardest to secure.

When more buyers are funnelled into the same limited pool of properties, prices rise quickly. This outcome is not new, not surprising, and not accidental.

Why demand side help keeps backfiring

This pattern aligns with decades of housing research in Australia and overseas.

Studies reviewing first home buyer assistance programs across countries including Canada, Germany, the Netherlands, Singapore and the United Kingdom consistently reach the same conclusion.

Demand side incentives rarely expand access to home ownership for people locked out of the market.

Instead, they tend to bring forward purchases from households already close to buying, while adding purchasing power without increasing supply.

That extra demand is capitalised directly into higher prices.

Australian data supports this. Over the decade to 2021, governments spent more than $20 billion on stamp duty concessions, cash grants and stimulus programs such as HomeBuilder.

Despite this, home ownership rates among younger Australians continued to decline, while prices accelerated.

The ladder was not lowered. It was climbed sooner and then pulled up behind those who followed.

The investor effect few policymakers acknowledge

There is another dynamic rarely addressed in public debate.

Investors understand government incentives well.

When price caps and guarantees are announced, investor activity often increases in those same lower price brackets, sometimes before the policy even begins.

The logic is simple. More buyers are about to enter the market, and demand is about to rise.

This additional competition places even more pressure on first home buyers, particularly in established suburbs where supply cannot respond quickly.

This is not a malfunction of the system. It is how incentives shape behaviour.

Supply remains the missing piece

While demand continues to be stimulated, supply remains structurally constrained.

Dwelling approvals remain well below levels required to meet population growth, even after recent monthly improvements.

There is also a growing gap between approvals and actual housing starts, driven by labour shortages, elevated construction costs, increasing compliance requirements and constrained builder capacity.

For builders, this is not an abstract policy issue.

Many are already managing tight pipelines, focusing on delivery certainty rather than volume growth. Additional demand does not automatically translate into additional homes when capacity and feasibility are limited.

The builder reality behind the headlines

For builders, schemes like the low-deposit guarantee create mixed outcomes.

On one hand, enquiry levels lift and buyer urgency increases.

On the other, price sensitivity intensifies, feasibility tightens and the risk of valuation gaps grows as prices move faster than delivery.

Builders are left navigating the space between policy ambition and on-site reality, managing expectations while protecting margins and delivery standards.

A familiar contradiction

There is an uncomfortable irony in the current policy approach.

A government that frequently speaks about fairness, housing access and community stability continues to rely heavily on demand side housing measures that push prices higher.

At the same time, population growth remains strong, tax settings continue to favour property investment, and construction pipelines remain constrained by planning, infrastructure and workforce limitations.

The system continues to inflate prices while promising affordability.

What actually improves affordability

If the goal is genuinely to improve access to housing, particularly for first home buyers, the evidence points in one clear direction.

Affordability improves when supply increases materially.

That requires faster approvals, aligned infrastructure delivery, scalable construction pathways and policy settings that support builders as delivery partners, not just recipients of announcements.

These are longer-term solutions. They are also the only ones shown to work.

The Good Builder view

Helping first home buyers matters. But how we help matters more.

Policies that increase demand without addressing supply do not make housing fairer. They make it more competitive, more expensive and more fragile.

Builders see this cycle repeat every time.

The question now is whether policymakers are willing to move beyond short-term stimulus and tackle the harder work of enabling supply at scale.

Until then, deposit schemes will continue to do what they have always done: push prices higher, narrow access and move the goalposts for the very people they are meant to help.

Author: TGB Editorial