Scenario
Housing supply expansion
A path in which planning, industrial production, and public investment raise completions enough to change local price and rent dynamics.
SCENARIOA possible future outcome based on stated assumptions.
Supply expansion is the scenario everyone announces and few countries demonstrate at the required scale. The test is completions in the right places, not the existence of a target.
- Time period
- 10–15 years
- Assumptions
- Land-use rules allow more homes in high-demand locations.
- Construction labour, materials, and finance can support a higher production rate.
- Affordable and social rental housing expands rather than shrinking as a share of stock.
- Methodology
- Qualitative scenario informed by OECD 2026 supply analysis and national targets such as Australia's 1.2 million homes and Canada's CMHC starts range. Not a claim that those targets will be hit.
- Variables
- Starts and completions · Densities near transit · Factory-built share of output · Public investment
- Uncertainty
- Targets fail often. Cost inflation can erase a planning win. Factory methods only matter if they are code-compliant, financed, and actually delivered.
- What could change the result
- Political reversal of upzoning
- Construction-cost spikes
- Community opposition that restores containment