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Build Costs and Approvals: Why supply is still lagging

28 October 2025
3 min read
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Build Costs and Approvals: Why supply is still lagging


Australia needs 1.2 million new homes by 2029. Current trajectory: 800,000. The 400,000 shortfall isn't just a number—it's the difference between housing affordability and a generation locked out of ownership.


The Supply Reality Check


Housing completions (2024):

  • Detached houses: 108,200 (-2.1% vs 2023)
  • Units/townhouses: 72,400 (-8.3% vs 2023)
  • **Total:** 180,600 (target: 240,000 annually)

  • We're not just missing targets—we're going backwards on multi-unit construction, precisely where supply is most needed.


    Approval Bottlenecks


    Development approval times (2024 average):

  • Sydney: 18.3 months (up from 14.2 in 2021)
  • Melbourne: 16.7 months (up from 12.8)
  • Brisbane: 14.2 months (up from 11.1)
  • Perth: 11.8 months (up from 9.4)

  • The problem isn't just time—it's predictability. Regulatory fragmentation between state, local, and federal requirements creates a compliance maze that adds both cost and uncertainty.


    Labor Crisis


    Construction employment gaps:

  • Residential builders: 22,200 unfilled positions
  • Electricians: 18,700 vacancies
  • Plumbers: 15,200 vacancies
  • Carpenters: 31,400 vacancies

  • Impact on build times:

  • Houses: 6.4 months (2019) → 10.4 months (2024)
  • Units: 8.7 months (2019) → 13.1 months (2024)

  • Skilled migration in construction trades has helped, but not enough to offset retirements and the pull of mining sector wages.


    Cost Pressures


    Material cost escalation (2024-25 forecast):

  • Structural steel: +7.0%
  • Concrete: +5.8%
  • Electrical components: +6.2%
  • Plumbing materials: +4.5%
  • Timber framing: +5.1%

  • Labor cost growth:

  • Construction wages: +5.4% (vs 4.1% economy-wide)
  • Subcontractor rates: +8.2%

  • Builder Insolvencies


    The sobering statistics:

  • Construction company insolvencies: 2,636 (12 months to March 2025)
  • Increase vs prior year: +23%
  • Average project value affected: $2.1 million

  • Rising costs, extended timelines, and fixed-price contracts have created a perfect storm for smaller builders. Each insolvency removes capacity from an already constrained market.


    Regional Variations


    Surprising supply leaders:

  • Tasmania: +14.2% dwelling approvals (resource sector boom)
  • Northern Territory: +11.8% (infrastructure investment)
  • South Australia: +8.9% (industrial diversification)

  • Laggards:

  • NSW: -3.1% (planning system bottlenecks)
  • Victoria: -6.2% (construction costs + regulatory complexity)

  • Policy Response


    Federal government initiatives:

  • $3 billion National Housing Accord
  • Fast-track approval processes for developments >500 units
  • Foreign investment in build-to-rent projects

  • State-level action:

  • NSW: Planning system reforms (18-month target)
  • Victoria: $5.2 billion social housing investment
  • Queensland: Infrastructure levy reductions for affordable housing

  • Investment Implications


    For property investors:

    1. **Supply-constrained markets:** Areas where approvals are slowest will see strongest price/rent growth

    2. **Build-to-rent opportunity:** Institutional-quality rental housing with government support

    3. **Regional plays:** Secondary cities with streamlined approval processes


    For developers:

    1. **Pre-approval value:** Development sites with existing approvals command significant premiums

    2. **Scale advantages:** Larger developments benefit from streamlined processes

    3. **Cost management:** Fixed-price contracts increasingly risky in volatile cost environment


    The 2029 Challenge


    To meet housing targets, Australia needs:

  • 40% increase in construction completions
  • 25% reduction in approval timeframes
  • 85,000 additional construction workers
  • $40 billion additional investment in residential construction

  • **Realistic assessment:** We'll likely deliver 900,000-950,000 homes by 2029, leaving a structural shortage that will support property values and rents well into the next decade.


    **Bottom line:** Supply constraints aren't temporary—they're structural. Investors and developers who can navigate the complexity will benefit from a market where demand consistently outstrips supply.

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