Population Growth + Dwelling Production

Welcome to Part 1 of the Atlas Housing Download Series. Here we examine the relationship between population growth and dwelling production, and why the gap between the two has become structural rather than cyclical.

1. Demand-Side Dynamics

Australia’s population growth has shifted materially over time.

• Through much of the 1980s and 1990s, annual population growth typically ranged between 200,000 and 300,000 people.
• In contrast, recent years have seen far greater volatility, with population growth exceeding 600,000 in 2023 before easing in 2024 - 25.
• This shift has been driven largely by net overseas migration, which now accounts for a greater share of population change.
• At the same time, average household size has continued to decline, from over 3.0 people per household in the early 1980s to around 2.5 today.
• As a result, the number of dwellings required per additional resident has increased materially over time.

Figure 1: Annual Population Growth (1981 - 2025)

Figure 2: Household Size (1911 - 2025)

2. Supply-side Response

Dwelling completions have remained comparatively stable in nominal terms but declining stock growth

• Since the early 1980s, annual completions have generally fluctuated within a narrow band of around 120,000 to 180,000 dwellings, with only brief periods above 200,000.
• More importantly, the growth rate of new dwelling completions has trended downward.
• Annual dwelling stock growth that once exceeded 4–5% has fallen to closer to 2–3% in recent years, pointing to a structural slowdown in delivery capacity rather than a temporary disruption.

Figure 3: Annual Dwelling Completions (1982 - 2024)

Figure 4: Rate of Dwelling Completion (1985 - 2025)

3. A structural imbalance that compounds over time

Taken together, population growth has re-accelerated while dwelling delivery has lagged. When annual shortfalls persist, they accumulate over time, increasing the scale of housing delivery required in subsequent years. This helps explain why housing pressures persist even during periods of elevated construction activity.

Figure 5: Population Growth vs Dwelling Completions (1982 - 2024)

Next Instalment

In Part 2 we will examine whether the construction sector has the labour, capacity, and productivity to deliver housing at the scale now implied by population growth.