Canada Needs 4.69 Million Homes by 2036, But Construction Is Poised to Slow
CMHC's latest housing outlook landed last week with a data point that looks like progress at first glance. The national supply gap shrank by roughly 40,000 units over the past year. That means builders collectively got 40,000 units closer to where Canada needs to be. It also means the country is still 4.69 million homes short of the inventory required to restore 2004-level affordability by 2036.
That narrowing came during a window when construction activity was still riding momentum from pre-rate-hike project approvals. Most of the units completed in the past twelve months were financed and permitted before the Bank of Canada's tightening cycle made debt service on rental projects prohibitively expensive. A backlog finally cleared. The problem is what happens next. Builders aren't starting projects at anywhere near the pace required to meet the 2036 target, and the economics of residential development have shifted against them.
The arithmetic is bleak
Canada currently completes around 231,000 housing units per year. To close a 4.69 million-unit gap by 2036, the country would need to sustain roughly 417,000 to 469,000 housing units annually for a decade. That's three times the current pace, maintained without interruption, across every province, in every housing form from single-detached to high-rise.
The construction industry does not have the labor force to deliver that. BuildForce Canada estimates that about 20% of the current workforce will retire within ten years. Productivity gains in residential construction have been minimal for decades. The sector still relies on traditional onsite methods that take months per unit. Modular and prefab solutions remain niche. There is no technology breakthrough on the horizon that triples output without tripling headcount.
The financing wall
Even if labor were unlimited, the cost of capital is doing the work of killing pipeline. A purpose-built rental tower financed at 2% in 2021 could pencil with rents that a working household might actually pay. The same project financed at 5.4% in late 2025 or early 2026 requires rents so high that vacancy risk wipes out the pro forma. Developers are shelving projects that no longer work.
The federal GST/HST rebate for purpose-built rentals, introduced in late 2023, did pull some marginal projects forward. But rebating sales tax on a building that cannot service its debt is not enough. The Housing Accelerator Fund, which ties federal dollars to municipal zoning reform, has prompted some cities to upzone near transit. But upzoning a parcel does not build the building. It just makes the building legal to build, assuming someone can finance it.
The missing middle is still missing
Ontario and British Columbia account for the bulk of the 4.69 million-unit shortfall. The Greater Toronto Area and Greater Vancouver together represent the most severe erosion in affordability since 2004. These are also the markets where municipal approval timelines are longest, where land costs are highest, and where NIMBYism is most organized.
There is recurring talk about the "missing middle", townhomes, triplexes, low-rise apartments, as the policy solution. But a shortage measured in millions of units cannot be closed with gentle density. The math requires high-rise intensification at a scale Canada has never attempted outside of a handful of downtown cores. That intensification, in turn, requires sewers, power lines, transit, and schools that are not currently budgeted.
Four million homes need these systems. The gap is not just housing. It's municipal balance sheets.
The 40,000-unit improvement CMHC reported is real. It is also a rounding error against the target. If current trends hold, the supply gap will start widening again within two years.
CMHC's latest housing outlook landed last week with a data point that looks like progress at first glance. The national supply gap shrank by roughly 40,000 units over the past year. That means builders collectively got 40,000 units closer to where Canada needs to be. It also means the country is still 4.69 million homes short of the inventory required to restore 2004-level affordability by 2036.
That narrowing came during a window when construction activity was still riding momentum from pre-rate-hike project approvals. Most of the units completed in the past twelve months were financed and permitted before the Bank of Canada's tightening cycle made debt service on rental projects prohibitively expensive. A backlog finally cleared. The problem is what happens next. Builders aren't starting projects at anywhere near the pace required to meet the 2036 target, and the economics of residential development have shifted against them.
The arithmetic is bleak
Canada currently completes around 231,000 housing units per year. To close a 4.69 million-unit gap by 2036, the country would need to sustain roughly 417,000 to 469,000 housing units annually for a decade. That's three times the current pace, maintained without interruption, across every province, in every housing form from single-detached to high-rise.
The construction industry does not have the labor force to deliver that. BuildForce Canada estimates that about 20% of the current workforce will retire within ten years. Productivity gains in residential construction have been minimal for decades. The sector still relies on traditional onsite methods that take months per unit. Modular and prefab solutions remain niche. There is no technology breakthrough on the horizon that triples output without tripling headcount.
The financing wall
Even if labor were unlimited, the cost of capital is doing the work of killing pipeline. A purpose-built rental tower financed at 2% in 2021 could pencil with rents that a working household might actually pay. The same project financed at 5.4% in late 2025 or early 2026 requires rents so high that vacancy risk wipes out the pro forma. Developers are shelving projects that no longer work.
The federal GST/HST rebate for purpose-built rentals, introduced in late 2023, did pull some marginal projects forward. But rebating sales tax on a building that cannot service its debt is not enough. The Housing Accelerator Fund, which ties federal dollars to municipal zoning reform, has prompted some cities to upzone near transit. But upzoning a parcel does not build the building. It just makes the building legal to build, assuming someone can finance it.
The missing middle is still missing
Ontario and British Columbia account for the bulk of the 4.69 million-unit shortfall. The Greater Toronto Area and Greater Vancouver together represent the most severe erosion in affordability since 2004. These are also the markets where municipal approval timelines are longest, where land costs are highest, and where NIMBYism is most organized.
There is recurring talk about the "missing middle", townhomes, triplexes, low-rise apartments, as the policy solution. But a shortage measured in millions of units cannot be closed with gentle density. The math requires high-rise intensification at a scale Canada has never attempted outside of a handful of downtown cores. That intensification, in turn, requires sewers, power lines, transit, and schools that are not currently budgeted.
Four million homes need these systems. The gap is not just housing. It's municipal balance sheets.
The 40,000-unit improvement CMHC reported is real. It is also a rounding error against the target. If current trends hold, the supply gap will start widening again within two years.
Sources
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