NSW housing feasibility: reforms lifted the viable share from 23% to about 50% in the Commission's model

The clearest finding in the NSW Productivity and Equality Commission's 2026 housing-feasibility paper is its distinction between zoned capacity and commercially viable capacity. The Commission estimated that only 23% of the housing capacity under local council plans was commercially viable at the time of its modelling. For capacity enabled by recent state-led planning reforms, the equivalent share was around 50%.

That result supports planning for homes in places where projects have a better chance of stacking up. It does not prove that rezoning alone will deliver those homes, that every site inside a reform area is feasible, or that the report's recommendations are government policy.

What did the NSW research find?

The Commission's official research paper estimated approximately 1,371,000 homes of zoned capacity under local council controls across Sydney. It found that 23% of that capacity was commercially viable at current prices (report page 20; PDF page 21).

It then modelled recent state-led planning reforms. Those reforms increased estimated zoned capacity by approximately 659,000 homes above council controls, and around half of that reform-enabled capacity was commercially viable at the time of the analysis (report page 22; PDF page 23).

What does the capacity comparison show?

Within the Commission's model, the viable share increased by 27 percentage points. The result shows why the location and form of planned capacity can change how much of it passes the feasibility test. A headline zoned-capacity total cannot answer that question on its own.

What does "commercially viable capacity" mean?

Three different measures are easy to collapse into one:

1. Zoned capacity is the number of homes that planning controls could theoretically accommodate under the model's assumptions.
2. Commercially viable capacity is the subset that passes the model's financial-feasibility test at the prices and costs used.
3. Delivered housing is what proceeds through design, approval, finance, construction and completion.

Each transition depends on further conditions. Infrastructure, ownership, site assembly, finance, market conditions, approval pathways, construction capacity and project-specific constraints can all affect delivery.

How does this relate to current NSW planning policy?

The research paper and current policy must be dated separately. The Commission paper was published on 29 July 2026. The Sydney Plan Version 1.0 commenced on 13 August 2026.

The current Sydney Plan establishes a single strategic planning framework for the Sydney Region. Its frequently asked questions say councils are required to plan for 30 years of feasible housing capacity within their planning controls at any given time.

That current policy direction is consistent with treating feasibility as a planning input. It does not convert every Commission recommendation into policy, and it does not remove the need to verify the applicable plan, controls and site conditions for a particular proposal.

What does our latest approvals comparison add?

To add current delivery context, we used ABS Building Approvals and Regional Population data stored in the Plynth database. We ran a bounded, read-only aggregate to calculate the comparison. We do not treat it as proof of reform impact.

The read-only query required all 12 months of 2025 approval observations and an estimated resident population of at least 5,000 at 30 June 2025. The frozen packet retains the numerator and denominator for the ten highest returned rates. It does not retain every eligible row, so this article does not publish a cohort median or percentile.

Castle Hill – Central recorded 2,063 approved dwellings against an estimated population of 8,845, which produced 233.2 per 1,000 residents. Zetland's rate was 82.5 per 1,000. The first rate was about 2.8 times the second. These are one-year local rates, not an NSW-wide aggregate.

How should we read the approvals comparison?

The fresh extract is contextual evidence only. It shows that approvals were highly uneven across the cohort in 2025, but it does not identify why a place recorded a particular result. A single year's approvals can reflect major projects, timing, reporting revisions and local conditions. It cannot establish that a planning reform caused approvals or that approved dwellings were built.

How the analysis was done

What did each evidence layer include?

Commission findings

We took the Commission's aggregate capacity and feasibility results from report pages 20 and 22. That includes approximately 1,371,000 homes of capacity under local council controls, the 23% commercially viable share, approximately 659,000 additional homes of capacity attributed to recent state-led reforms and the finding that around half of that reform-enabled capacity was commercially viable. The analysis uses the Commission's published outputs rather than a reconstruction of its financial-feasibility model.

Current policy check

We checked the Commission paper against the official Sydney Plan separately because a research recommendation and current policy are not the same thing. The policy reading uses Sydney Plan Version 1.0, which commenced on 13 August 2026, and its current feasible-capacity guidance. A later plan or implementation update would trigger a fresh review of this article.

2025 ABS approvals comparison

For every NSW Statistical Area Level 2 geography with all 12 months of 2025 approval observations and at least 5,000 estimated residents at 30 June 2025, we summed approved dwellings, divided by population and multiplied by 1,000. The query ordered the exact rates and retained the ten highest rows with their approval counts and population estimates. No observation was manually added or excluded after the query.

The Plynth database holds the ABS source data used for this calculation. We ran the calculation through a read-only connection and froze a calculation receipt. The receipt records the query checksum, source vintages, cohort rules, formula and caveats. The frozen packet contains enough input data to recalculate the ten displayed rates, but not the full eligible distribution. We therefore removed the median and 90th percentile from the public article and its social copy.

What this method cannot show

The method can verify reported values and recalculate the ten published approval rates. It cannot reproduce the Commission's full feasibility model, explain why a particular area recorded a high rate, turn approvals into completed homes or show that planning reform caused the 2025 pattern.

What does this report tell us?

The paper's strongest contribution is its feasibility test. A capacity target becomes more informative when it asks whether the modelled homes are commercially viable in the locations and forms being planned. The result does not guarantee housing delivery.

For decision-making, the responsible sequence is:

1. identify the applicable planning capacity;
2. test feasibility with dated assumptions;
3. track approvals, commencements and completions separately; and
4. revisit the conclusion when policy, costs, prices or source data change.

That sequence turns a headline capacity number into an evidence trail while preserving the boundary between research, policy, planning potential and actual delivery.

Caveats

• The Commission's feasibility model is an estimate, not a parcel-specific valuation or development feasibility assessment.
• The "around 50%" result is approximate and should not be restated as an exact count of viable or delivered homes.
• The July 2026 paper and the August 2026 Sydney Plan have distinct authority and lifecycle states.
• ABS small-area building approvals and population estimates can be revised.
• Approval intensity is affected by the selected period, geography, population threshold and denominator.
• Nothing in this article predicts approval, finance, construction or occupancy for a particular site.