South Australia Residential Land: Demand, Supply and the Development Opportunity

South Australia’s residential land market continues to be supported by a fundamental imbalance between housing requirements and the supply of development-ready land.

Greater Adelaide’s Housing Accord requirement is approximately 12,960 new dwellings per year. This requirement is underpinned by longer-term population growth, with Greater Adelaide’s population projected to reach approximately 2.01 million by 2051, representing almost 490,000 additional residents from 2021.

Strong demand, constrained supply

The greenfield market remains an important component of future housing delivery. Across Australia’s capital cities, greenfield lot sales increased 10% in 2025 to 43,180 lots, but remained 11% below the 10-year average and 46% below the 2021 peak. 

At the same time, the combined capital-city median greenfield lot price increased 12% to $472,100 in 2025, with UDIA identifying Adelaide, Perth and South East Queensland as the principal drivers of that growth.

This combination of rising prices and constrained supply reinforces the importance of delivering new residential lots in appropriate locations and at price points the end market can absorb.

Development-ready land is the key

South Australia’s Greater Adelaide Regional Plan aims to maintain a 15-year rolling supply of zoned land, including at least five years of development-ready land.

This distinction is important. Zoned land is not necessarily development-ready land. The delivery of residential lots also depends on infrastructure, servicing, planning, civil works and the timing of individual projects. PlanSA now monitors Greater Adelaide land supply, rezoning and development activity through its Land Supply Dashboard.

Our perspective

For real estate debt investors, housing undersupply provides a supportive macro backdrop, but it does not make every land subdivision an attractive investment.

At Labassa, our assessment of residential land subdivision opportunities focuses on end-buyer affordability, sales velocity, project staging, development costs, infrastructure readiness, sponsor capability, leverage and clearly defined repayment pathways.

In a market where demand for housing remains strong but delivery constraints persist, disciplined underwriting and transaction structuring are critical.

Housing demand creates the opportunity. Development execution determines how that opportunity is realised.

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