Industry leaders report announced price increases across key inputs, including polyvinyl chloride( PVC – a widely used construction plastic for pipes, windows, wiring) and polyethene products, alongside higher shipping, freight, and port costs.
Fuel data tells the same story: petrol prices have risen sharply, diesel even more so, both feeding directly into the cost of producing and moving building materials.
For housing, the immediate implication appears that building becomes more expensive, but the deeper impact lies in what happens next.
WHAT DOESN’ T GET BUILT
When construction costs rise sharply, the first response is not higher house prices – it’ s hesitation.
Projects that once stacked up on paper become more challenging to deliver. Margins are compressed, financing becomes more difficult, particularly in an environment where interest rates are expected to firm.
“ Construction totally relies on borrowed money,” Tookey says.
The result isn’ t necessarily a surge in house prices, but a slowdown in activity.
Nerida Conisbee, Ray White Group Chief Economist, says that some developers will pause; others will redesign or stage projects more cautiously, while marginal developments – particularly in outer growth areas or smaller centres – may not proceed at all.
“ In the short-term, that can feel like a cooling influence. However, housing markets do not typically respond to what’ s happening today; they respond to what is, or isn’ t, being delivered tomorrow.
“ Housing markets do not typically respond to what’ s happening today; they respond to what is, or isn’ t, being delivered tomorrow.”
Nerida Conisbee, Ray White Group Chief Economist
“ A thinner development pipeline now becomes a tighter supply environment in two to three years,” she says.
EXISTING HOMES, REPRICED
At the same time, rising construction costs subtly shift the value of existing housing – not just at the individual property level, but across entire communities.
This is where the narrative diverges from conventional thinking.
For buyers, existing homes offer certainty – a known price, immediate availability, and no exposure to escalating build costs. For investors, they offer clarity of income and reduced development risk. For developers, they increasingly represent the benchmark against which new projects must compete.
But Conisbee says the implications extend beyond individual decisions.
Higher construction costs aren’ t confined to housing. They flow directly into the cost of delivering infrastructure – roads, water, transport networks – at a time when both central and local government are actively trying to accelerate growth and unlock new communities.
“ As those costs rise, so too does the funding burden. Projects become harder to justify, staging becomes more conservative, and timelines are stretched. In some cases, planned growth corridors may slow, not because of a lack of demand, but because the cost of enabling that growth has shifted.
“ As the economics of building recalibrate, so too does market behaviour.
“ Buyers who have considered building begin to pivot toward established stock. Investors focus on assets with immediate income, while renovation and add-value strategies gain traction over ground-up development.”
At the same time, constraints on new supply begin to build quietly in the background.
“ What we’ re seeing is a growing awareness that the cost and certainty of building are changing. When that happens, welllocated, existing properties become more appealing.
“ Buyers start to value what’ s in front of them, rather than what might be delivered down the track.”
Conisbee says none of this suggests an immediate surge in house prices. If anything, the near-term environment may remain measured as higher prices and cautious sentiment temper activity.
“ The landscape may remain measured, but the direction of travel is clear.
“ As global energy pressures lift the cost of building, the housing market is shaped less by demand – and more by constrained future supply. In that environment, the value of existing property is rarely left behind, and the opportunity lies not in predictions, but understanding the dynamics early and acting accordingly.”
“ If it becomes materially more expensive to build a new home, the relative appeal of what already exists increases. Not because buyers suddenly pay more, but because the replacement cost of housing is moving higher beneath the surface,” Conisbee says.
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