Based on findings from the APN Research Report: The Australian Property Market: Economic Driver or Diversification Drag?
Australia’s major banks are pillars of stability and profitability, largely built on the bedrock of the nation’s enduring love affair with property. Yet, simultaneously, Australia faces a persistent challenge: diversifying its economy beyond resources and housing to build long-term resilience. A recent APN Research Report, “The Australian Property Market: Economic Driver or Diversification Drag?”, raises a critical question emerging from this paradox: Does the financial system’s intense focus on property lending inadvertently stifle the flow of capital to other vital sectors, particularly small and medium enterprises (SMEs), thereby hindering necessary economic diversification?
The Scale of Housing’s Dominance in Finance
The sheer scale of the property market’s integration with the Australian financial system is striking. The APN report highlights that housing lending isn’t just a major part of banking activity; it’s the dominant one. Residential mortgages constitute the largest single asset class for Australian banks, accounting for around 60-65% of the total loan portfolio across all Authorised Deposit-taking Institutions (ADIs) (Section II.C, ref 24). For the major banks, which control the lion’s share of the system’s assets, this concentration is even more pronounced, with residential mortgage debt representing over 60% of their loan books (Section II.C, ref 15).
Table 1 within the report visually underscores this imbalance, clearly showing the overwhelming share allocated to housing compared to business lending (Table 1, p. 6). While this provides banks with a historically stable and profitable asset base (Section II.C, ref 24), the report questions the broader economic consequences of such concentration.
Evidence for the ‘Crowding Out’ Effect
The concern isn’t just theoretical. The APN report points to research suggesting a tangible “crowding out” effect (Section V.A). Studies focusing specifically on Australian banks, particularly the Big Four, have found evidence that during periods of strong housing market activity, growth in housing loans is negatively associated with growth in business loans (Section V.A, ref 30). This indicates that as opportunities in the booming property market arise, banks may actively shift their lending priorities towards mortgages, potentially reducing the credit available for businesses. This effect, the research suggests, appears linked to reduced business investment overall (Section V.A, ref 30).
Why Banks Favour Mortgages: Incentives and Collateral
Several factors likely drive this lending behaviour, as outlined in the report. Banks are naturally drawn to the perceived safety and reliable profitability of mortgage lending, especially when secured against residential property, which has often appreciated in value (Section V.A, ref 24). Regulatory frameworks, while designed for stability, might also implicitly favour well-understood, relatively homogenous mortgage products over the more diverse and complex nature of business lending (Section II.C, ref 26).
Crucially, the common practice of requiring real estate as collateral for business loans creates a significant hurdle for many potential borrowers (Section II.C, ref 31). SMEs, start-ups, and innovative ventures, particularly those led by younger entrepreneurs with lower rates of home ownership, often lack the property assets banks prefer as security. This collateral barrier means SMEs are likely the group most significantly impacted if banks prioritise property-backed lending (Section V.A, ref 31). While non-bank lenders and securitisation markets offer alternatives (Section V.A, ref 32), they may not fully compensate for a potential reduction in accessible finance from traditional banks for the broader SME sector.
The Brake on Business: Impact on SMEs, Innovation, and Diversification
This potential restriction on the flow of capital to businesses, especially SMEs, has profound implications beyond individual firms. It directly intersects with Australia’s documented struggle with economic complexity. The APN report highlights Australia’s alarmingly low and declining ranking on the Economic Complexity Index (ECI), placing it near the bottom of OECD countries despite its high income (Section IV.A, ref 3, 4). This low complexity stems from an over-reliance on exporting unprocessed resources and a failure to develop diverse, sophisticated industries.
If the financial system is structurally biased towards funding housing assets over potentially riskier but more innovative business ventures, it acts as a direct impediment to the diversification needed to improve this complexity profile (Section V.C). Capital that could fuel advanced manufacturing, technology start-ups, or value-adding service industries may instead be channelled predominantly into residential property. This reinforces the economic status quo rather than enabling the structural transformation required for future resilience and growth.
Conclusion: Reassessing the Balance
The APN Research Report presents a compelling case that Australia’s deep financial entanglement with the property market, while providing stability, may come at a cost to economic dynamism and diversification. The evidence suggesting a crowding out of business lending, driven by incentives and collateral preferences favouring mortgages, points to a structural issue with significant consequences.
This raises important questions for lenders about portfolio balance, for SMEs about accessing growth capital, and critically, for policymakers seeking to foster innovation and build a more complex, resilient Australian economy. Addressing this potential imbalance may require exploring mechanisms to enhance capital flow to non-property related businesses and re-evaluating incentives to ensure that “banking on bricks” doesn’t inadvertently prevent Australia from building a more diverse economic future.
Disclaimer: This article is based on interpretations and findings presented in the “APN Research Report: The Australian Property Market: Economic Driver or Diversification Drag?”. Readers are encouraged to consult the full report for detailed analysis and references.



