Canada’s housing supply shortages: moving to a new framework
CMHC’s updated Supply Gaps Estimate provides a fresh analysis of Canada’s housing supply gap using an enhanced model. It explores a range of scenarios up to 2035 and provides detailed information on where more housing supply is needed across Canada.
Historical and Projected Homebuying Affordability Ratios
We now provide new results where we quantify how much housing supply is required to restore affordability over the next decade to levels last seen prior to the pandemic.
Canada
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio across Canadian markets was at 39% and then increased sharply to 54% in 2024, demonstrating the important loss in affordability during the pandemic period.
For the projected period, the line chart is separated into 2 scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 53 % by 2035, and then a 2nd result of 41% with additional supply, demonstrating how added supply leads to improved homebuying affordability and going back to levels last seen in 2019.
See Figure 3 for additional markets
Toronto
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Toronto market was at 59% and then increased to 74% in 2024, demonstrating the important loss in affordability during the pandemic period. In Toronto, this ratio was already trending up since the early 2000s.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 79% by 2035, and then a 2nd result of 59% with additional supply, demonstrating how added supply leads to improved homebuying affordability and going back to levels last seen in 2019.
See Figure 3 for additional markets
Montréal
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Montréal market was at 34% and then increased significantly to 48% in 2024, demonstrating the important loss in affordability during the pandemic period.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 48% by 2035, and then a 2nd result of 34% with additional supply, demonstrating how added supply leads to improved homebuying affordability and going back to levels last seen in 2019.
See Figure 3 for additional markets
Calgary
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Calgary market was at 27% and then increased to 38% in 2024, demonstrating the important loss in affordability during the pandemic period.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 36% by 2035, and then a 2nd result of 30% with additional supply.
See Figure 3 for additional markets
Edmonton
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Edmonton market was at 26% and then increased to 31% in 2024, demonstrating some loss in affordability during the pandemic period.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 30% by 2035, and then a 2nd result of 28% with additional supply.
See Figure 3 for additional markets
Ottawa – Gatineau
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Ottawa – Gatineau market was at 30% and then increased significantly to 44% in 2024, demonstrating the important loss in affordability during the pandemic period.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 44% by 2035, and then a 2nd result of 30% with additional supply, demonstrating how added supply leads to improved homebuying affordability and going back to levels last seen in 2019.
See Figure 3 for additional markets
Vancouver
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
The chart indicates the historical (1990 to 2024) homebuying affordability ratios, followed by projected ratios for the 2025 – 2035 period. In 2019, the ratio in the Vancouver market was at 71% and then increased significantly to 99% in 2024 (after peaking in 2022), demonstrating the important loss in affordability during the pandemic period. In Vancouver, this ratio was already trending up since the early 2000s.
For the projected period, the line chart is separated into 2 separate scenarios, the first indicating the projected ratio based on keeping the business-as-usual scenario, resulting in a ratio of 83% by 2035, and then a 2nd result of 71% with additional supply, demonstrating how added supply leads to improved homebuying affordability and going back to similar levels last seen in 2019.
See Figure 3 for additional markets
Explore Canada's housing affordability challenge and the need for more homes by 2035
CMHC has been assessing how much housing is needed to restore affordability. We now estimate that housing starts must nearly double to around 430,000 to 480,000 units per year until 2035 to meet projected demand. This will require action by everyone to change how we build homes.
CMHC has emphasized that increasing housing supply is the key to restoring affordability. We now provide new results where we quantify how much housing supply is required to restore affordability over the next decade to levels last seen prior to the pandemic.
Our previous analyses highlighted the scale of the challenge. We continue to refine our work and make it more relevant for decision making.
Breaking Down Canada’s Housing Affordability Challenges
Canada faces housing affordability challenges
Canada faces a housing affordability challenge. For many years, housing prices and rents in Vancouver and Toronto attracted attention from all over the world. Over time, these increases came to burden many Canadians and their children. Low-income and some middle-class households struggle to even find a place to live, let alone at a price they can afford.
On a wider scale, the productivity of the Canadian economy suffers from unaffordable housing as the capacity to attract skilled workers is diminished and the young are deterred from staying in our largest cities partly because of the lack of attainable housing. And Canada’s enormous level of household debt creates a vulnerability in the event of a global economic crisis.
Challenges have become more widespread across Canada since the pandemic.
People grew tired of housing costs and long commutes, and eventually moved to other cities. For many, the ability to work remotely helped this move. This drove up house prices across Canada. Increases in demand cause higher house prices because the housing supply system takes years to adjust.
Increasing housing supply for all income levels is key to improving affordability. Since 2022, CMHC has published its estimates on how much housing would be needed to restore affordability to early 2000s levels by 2030. Our analysis helped to inform and guide policies to address the scale of the challenge.
Our past analysis showed the magnitude of the challenge to restore affordability. Publishing these results encouraged policy changes to promote housing supply. But while our previous approach to estimating how much housing is needed succeeded in encouraging change, we now need to make further changes.
Changes in our approach
First, the time it takes to get approval for and build new housing means that our 2030 timeline is no longer realistic. While building a new structure may take 1 or 2 years, getting the approvals to rezone land is a multi-year process.
To reflect these timelines, we’ll begin presenting our results on a rolling 10-year horizon. As a result, for this report, we estimate how much housing is needed by 2035. We also present our results to highlight the change in the number of housing starts required per year rather than a cumulative total. This will ease comparison with current and potential rates of housing construction.
Second, restoring affordability to levels last seen 2 decades ago isn’t realistic, especially after the post-pandemic price surge. COVID-19 significantly changed the affordability landscape across the country. In particular, Toronto and Vancouver face more structural affordability challenges that require more time to address.
As a result, we’re changing our aspiration to restoring affordability to levels seen just before the pandemic. This change also highlights how widespread the housing affordability challenge has become across Canada. This aspiration shouldn't be interpreted as an official government target. Instead, it’s a way to show how big of a challenge it is to return to affordability.
Further improvements to our approach include incorporating more feedback effects into our analysis by generating informative scenarios.
To illustrate what this means, suppose that housing supply were to increase in only 1 city so that house prices would fall. This isn’t the end of the story. Some people would move to that city from the rest of Canada to benefit from greater affordability. Effectively, demand for housing in this city would be greater than originally expected because of this influx. As a result, even more housing needs to be built to return to affordability.
Preview of results
We find that housing starts need to double over the next decade. Compared to a projected rate of about 250,000 new housing units annually until 2035, Canada needs to increase housing starts to around 430,000 to 480,000 units per year to restore affordability (depending on parameters).
This can only be possible with:
a significantly greater workforce
more private-sector investment
changes in technology and productivity such as more automation and modular construction
The need to increase housing supply remains critical.
What is Canada’s housing affordability challenge?
Housing affordability has come to affect almost everyone in Canada. Figure 1 and Figure 2 dig into this by showing average annual changes in
house prices and rents over the past 2 decades. These are key components
of any measure of affordability.
The data are split into 2 categories: pre- and post-pandemic.
Figure 1 shows increases in house prices in Ottawa – Gatineau, Montréal and Nova Scotia as well as other parts of Ontario, Quebec and British Columbia. Meanwhile, Figure 2 shows that average rents have increased across the country and to largely similar degrees in each region.
In this report, we concentrate on average affordability within regions of
Canada. We don’t address how affordability varies within regions,
although many households with low incomes struggle with housing costs even in
regions that remain affordable on average.
Figure 1: House Prices — Average Annual Growth (%)
Source: CMHC calculations.
Note: Average annual growth rate (AAGR). House prices: price changes based on a CMHC repeat sales price index (2024 house price data is for the first 3 quarters only). This is a different price measure than forecasted in the CMHC Housing Market Outlook (HMO) publication.
Note: Average annual growth rate (AAGR). Rents: average rent of purpose-built private rental units (apartments and rows, all bedroom types). This is a different rent measure than forecasted in the CMHC Housing Market Outlook (HMO) publication.
The data on rents and house prices are different concepts, which complicates
interpretation.
House prices are recorded when a sale takes place. As a result, house prices
reflect market transactions rather than values across the entire spectrum of
housing.
In contrast, CMHC data on average rents cover rents of most purpose-built
rental units and not just those available for new tenants at the current
market price.
Therefore, changes in home prices and rents are not directly comparable. While
CMHC has started to report on rents when units are turned over to new tenants,
reflecting market transactions, these are insufficient for modelling.
What is affordability?
There’s no settled definition of housing affordability but it relates
housing costs to income. In housing market analysis, a common convention is to
compare the monthly cost of purchasing an average home to the average or
median income.
In our
previous reports (PDF), we developed a comprehensive metric of homebuying costs that included
criteria for qualifying for a mortgage. Unfortunately, house prices have risen
so much in our most expensive cities that the average household wouldn’t
qualify to buy the average home under current mortgage rules. As a result,
that metric has become obsolete.
We therefore adapted how we measure homebuying affordability. We now use a
more generic price-to-income ratio (or “homebuying affordability
ratio”) with an adjustment factor to account for changes in mortgage
rates and homeowner expenses. This allows us to better monitor homebuying
affordability over time in all regions. Interpretation remains the same: the
higher the ratio, the less affordable the market.
Other metrics could be used in our work, subject to data availability and
whether the metrics could be integrated into our modelling framework.
Changing our aspiration for affordability
The loss of affordability over the past 2 decades has been large and is
becoming larger. The supply required to return to that level of affordability
would put an unrealistic strain on resources.
Training and expanding the construction workforce has been a challenge even to
reach our current level of production. To improve productivity in the housing
sector, Canada will need private sector capital. However, we also need to
boost productivity across the whole economy. As a result, the available funds
are limited.
While the results from our previous reports remain valid, we’re changing
our aspiration for affordability to match pre-pandemic levels, which has
several impacts.
Figure 3 highlights the substantial loss of affordability in
Ontario, British Columbia, Quebec and Nova Scotia, as well as losses
elsewhere, between 2019 and 2024. It also shows the levels of affordability we
aim to return to in our modelling. Rather than being government targets, these
illustrate what would be required to regain lost affordability.
In general, we aim to return to levels of affordability at which adjusted
house prices (homebuying affordability ratios) are:
no higher than 30% of average gross household income; or
no higher than their 2019 levels, in the more unaffordable regions
This means that, in British Columbia and in parts of Ontario and
Montréal, we aim for affordability levels of 2019 (higher than 30%).
Many parts of Canada — the Prairies and parts of the Atlantic region
— were affordable in 2019, with affordability ratios less than 30%.
They’ve now breached that level. Increased housing supply will move them
back to the 30% threshold.
The loss of affordability shown in this figure mostly explains our findings of
where more housing supply is needed, discussed later. For example, the loss of
affordability since 2019 in Montréal, Ottawa – Gatineau, the rest
of Ontario and Nova Scotia leads to more housing being needed
there.
Figure 3 provides our interpretation of what might be a
realistic level of affordability. They’re meant to be illustrative. In
turn, projected ratios for 2035 in our scenario, compared to the aspiration,
is central to understanding the size of the supply gap in each region.
Figure 3: Homebuying Affordability Ratios (House Price-to-Income, Adjusted for
Mortgage Rates and Homeowner Expenses)
Source: CMHC calculations.
Note: Average house price-to-average gross household income
ratio, with an adjustment factor to account for interest rates (5-year fixed
discounted mortgage rate) and monthly homeowner expenses (estimations of
property taxes, utilities, maintenance and insurance).
* The target for the model is that, by 2035, the adjusted housing price metric
should be no higher than 30% of gross household income where this is still
realistic, or no higher than its 2019 level in the most expensive regions.
Homebuying Affordability Ratios (House Price-to-Income, Adjusted for Mortgage Rates and Homeowner Expenses)
Regions
Ratio in 2019 (%)
Ratio in 2024 (%)
Targeted ratio in Q4 2035* (%)
Toronto
59
74
59
Ottawa – Gatineau
30
44
30
Rest of Ontario
33
50
33
Montréal
34
48
34
Rest of Quebec
24
34
30
Vancouver
71
99
71
Rest of British Columbia
47
64
47
Calgary
27
38
30
Edmonton
26
31
30
Rest of Alberta
25
31
30
Manitoba
27
34
30
Saskatchewan
26
29
30
Nova Scotia
26
49
30
Newfoundland and Labrador
23
31
30
New Brunswick
20
34
30
Prince Edward Island
24
34
30
What modelling changes are we making in this report?
More detailed modelling
In this report, we provide a breakdown of results for Canada’s 6 largest cities, in addition to the results for all provinces presented in the previous reports. We also provide more detailed results on the breakdown between rental and homeownership housing.
Greater geographical detail means we need to incorporate more “feedback” effects (discussed in the introduction), which leads to our discussion of more sophisticated modelling below. In general, modelling at a more local level means that we need to consider more factors such as the impact of changing housing affordability on population mobility. Changes in patterns of housing affordability are more likely to influence households to move between Toronto and the rest of Ontario than they are to influence them to move between Ontario and British Columbia, for example.
More sophisticated modelling
In line with previous reports, we continue to advance our understanding and our modelling of the Canadian housing system. These changes are explained in more detail in a technical report published separately. We have made many model enhancements that are described in the technical report rather than here.
Our new modelling includes the effects of house price changes on:
population mobility; and
household formation
Incorporating these effects has many impacts, including if house prices were to fall in a city because of increased supply, then:
Households would move there from other parts of Canada. This would lower demand in the places they left but creates further demand in the city where supply increased; and
More households would be formed in that city as adult children leave the parental home, for example. Again, this further increases demand for housing, offsetting the original decrease in prices.
In both cases, planners need to anticipate that even more housing needs to be built as prices fall.
Parts of Canada that have been relatively affordable because they have increased their housing supply (such as Alberta) will need to anticipate building even more housing if households continue to leave Canada’s expensive cities, if no action is taken to increase housing supply in those cities.
Since households are now created because of changes in the housing system, the number of households relative to the size of the population changes by scenario. Lower house prices nationally will lead to more households relative to the size of the population in Canada. In particular, there will be more young households.
The number of housing units to be built depends on local contexts that are constantly changing. More active monitoring of local population and economic conditions would be required.
Canada will see continued growth in demand for housing over the next decade
Over the long term, housing affordability is driven by demand and supply.
Economy-wide demand for housing grows with population and the size of the
economy. In this section, we explore a scenario of how Canada might look in
2035 if it were to continue its current trend of homebuilding.
The Canadian population might reach nearly 45 million by 2035 compared to just
over 41 million today (Figure 4 and Figure 5). This projection reflects data from Statistics
Canada and includes policy changes to reduce immigration announced in
2024.[1] The economy will be more than a fifth
larger in real terms (Figure 6 and Figure 7). A larger economy relative to the size of the population
improves affordability by our metric. This is because higher average incomes
enable households to afford more housing if there’s enough supply.
Figure 4: Projected Population, Business-as-Usual, 2024 and 2035 (Millions)
Canada, Projected GDP, Billions of Chained (2017) Dollars, Business-as-Usual, 2024 and 2035
Region
GDP,
2024 ($B 2017)
Projected GDP,
2035 ($B 2017)
Canada
2,407.9
2,936.7
We project that the annual rate of housing starts will be around 250,000 units
by 2035. Therefore, the housing stock will increase by about 3 million units
to reach close to 20 million units (Figure 8 and Figure 9). There will be significant growth
in the housing stock in Alberta, for example. These projections reflect
long-term trends, excluding the impact of any recent policy announcements.
Figure 8: Housing Stock in 2024 and 2035 (Business-as-Usual Scenario)
Canada — Housing Stock in 2024 and 2035 (Business-as-Usual Scenario)
Region
Estimated housing stock, Q3 2024 (millions)
Projected housing stock, Q4 2035
(millions)
Canada
16.995
19.751
These projections for the economy, population and supply imply a path for
house prices and average incomes that together determine affordability. Figure 10 and Figure 11 shows that house prices will continue to increase and
hurt affordability if there is no action to increase supply. Canadians moving
from expensive regions will lead to proportionately greater price increases in
regions such as Prince Edward Island and Saskatchewan, for example. Without
additional supply, we would expect average rents to increase by about 40%,
from around $1,400 today to over $1,900 by 2035.
Figure 10: House Prices ($), Q3 2024 and Q4 2035
Source: CMHC calculations.
Note: House prices ($) represent the average price of a fixed
basket of residential properties with changes in value based on a CMHC repeat
sales price index. This is a different price measure than forecasted in the
CMHC Housing Market Outlook (HMO) publication.
House Prices ($), Q3 2024 and Q4 2035 (Business-as-Usual Scenario)
Regions
House prices, Q3 2024 ($)
Projected
house prices, Q4 2035 ($)
Toronto
1,197,759
1,947,160
Ottawa – Gatineau
603,708
914,949
Rest of Ontario
660,565
994,314
Montréal
616,242
956,421
Rest of Quebec
400,893
558,567
Vancouver
1,506,054
1,907,076
Rest of British Columbia
846,741
1,104,192
Calgary
614,215
808,674
Edmonton
410,348
542,093
Rest of Alberta
381,901
564,935
Manitoba
375,970
527,804
Saskatchewan
328,571
515,320
Nova Scotia
510,913
579,703
Newfoundland and Labrador
323,328
403,182
New Brunswick
324,667
369,303
Prince Edward Island
369,378
577,397
Figure 11: Change in House Prices (%) Between Q3 2024 and Q4 2035
(Business-as-Usual Scenario)
Source: CMHC calculations.
Note: House prices ($) represent the average price of a fixed
basket of residential properties with changes in value based on a CMHC repeat
sales price index. This is a different price measure than forecasted in the
CMHC Housing Market Outlook (HMO) publication.
Change in House Prices (%) Between Q3 2024 and Q4 2035 (Business-as-Usual Scenario)
Regions
Change in price (%)
Toronto
62.6
Ottawa – Gatineau
51.6
Rest of Ontario
50.5
Montréal
55.2
Rest of Quebec
39.3
Vancouver
26.6
Rest of British Columbia
30.4
Calgary
31.7
Edmonton
32.1
Rest of Alberta
47.9
Manitoba
40.4
Saskatchewan
56.8
Nova Scotia
13.5
Newfoundland and Labrador
24.7
New Brunswick
13.7
Prince Edward Island
56.3
[1] While the composition of the population reflects the Statistics Canada M1
scenario, the level of population is developed by CMHC. CMHC uses population
projections to generate projections of household numbers within our modelling.
More housing supply required over the next decade
As the size of the economy and the population grow, demand for housing
increases. Without a proportional increase in housing supply, affordability
will suffer. In our modelling structure, we ask how much housing supply should
be built to return to housing affordability over the next decade.
How much housing is required?
We estimate that housing starts averaging around 480,000 units
annually over the next decade is required, compared to the 245,000 in our
current projection (Figure 12 and Figure 13). The rate of increase required varies across the country.
Notable increases required in areas such as Ontario outside of Toronto, as
well as Montréal and Nova Scotia. This reflects the sharp loss of
affordability since the pandemic.
In some areas of Canada, such as Edmonton, no additional supply of market
housing is required, since these are projected to build sufficient housing to
maintain affordability over the next decade. In many of these areas there
remain housing challenges such as homelessness.
Figure 12: Projected Annual Housing Starts, 2025 to 2035
Canada, Projected Annual Housing Starts, 2025 to 2035
Region
Business-as-usual
Scenario with additional supply
Canada
245,000
477,840
What will be the impact of increasing housing supply?
Household numbers will increase
As a result of lower prices, more households will be created. As younger adult
Canadians are able to leave the family home, there will be a notable increase
in the number of households among younger age cohorts (as well as some
increase in other age brackets). Overall, reducing the cost of housing will
increase the number of households by roughly 2% in 2035 compared to where it
would be otherwise.
Population flows will increase
Changing patterns of housing supply and improved affordability across the
country will create flows of households taking advantage of lower housing
costs. A greater supply of housing outside of Toronto to restore lost
affordability will lead to some households leaving Toronto for the rest of
Ontario.
A similar pattern will take hold in British Columbia (Figure 14). In Quebec, more households will move to Montréal because there will
be more housing in Montréal to restore the affordability lost since
2019. There’s less change in Alberta because there was less change in
prices and rents from the pre-pandemic period.
Figure 14: Difference in Population Between "Additional-Supply" and
Business-as-Usual Scenarios, 2035
Difference in Population Between "Additional-Supply" and Business-as-Usual Scenarios, 2035
Regions
Population difference (2035)
Toronto
-232,399
Ottawa – Gatineau
25,788
Rest of Ontario
290,791
Montréal
118,321
Rest of Quebec
-129,560
Vancouver
-49,536
Rest of British Columbia
49,555
Calgary
-1,360
Edmonton
-49,117
Rest of Alberta
19,788
Manitoba
-14,900
Saskatchewan
-11,745
Nova Scotia
9,490
Newfoundland and Labrador
-7,855
New Brunswick
-18,377
Prince Edward Island
-52
Price changes
Returning to 2019 affordability levels in the next decade would lead to house
prices being roughly a quarter lower than where they would otherwise be in
2035. Average rents would be lower by about 5%.
Figure 15 and Figure 16 show that increased supply would lead to price
declines relative to today in some areas such as Nova Scotia. However, these
areas experienced a sharp price increase since the pandemic. Other areas will
see price growth because they’re relatively affordable today. As a
result, we haven’t set tight affordability goals for them. Increases in
supply will keep price growth in check in Toronto and Vancouver.
While there are concerns that increasing housing supply would cause house
prices to fall rapidly and pose a risk to financial stability, this is
unlikely. Housing supply cannot be increased rapidly enough in reality to
trigger such an event.
In fact, the impact of increasing housing supply across the country will be
much more nuanced in practice. New housing is expensive because of
construction costs and better-quality finishing. Over time, through the
process of filtering, more supply puts downward pressure on house prices.
Increasing housing supply is unlikely to cause financial instability because
these forces take time to produce reactions. The slow pace of change in
housing is why we’ve moved to a rolling 10-year horizon for our results.
Figure 15: House Prices ($), Q3 2024 and Q4 2035
Source: CMHC calculations.
Note: House prices ($) represent the average price of a fixed
basket of residential properties with changes in value based on a CMHC repeat
sales price index. This is a different price measure than forecasted in the
CMHC Housing Market Outlook (HMO) publication.
Projected
house prices —
Scenario with additional supply, Q4 2035 ($)
Toronto
1,197,759
1,434,389
Ottawa – Gatineau
603,708
596,689
Rest of Ontario
660,565
642,102
Montréal
616,242
671,168
Rest of Quebec
400,893
517,233
Vancouver
1,506,054
1,630,392
Rest of British Columbia
846,741
893,040
Calgary
614,215
659,106
Edmonton
410,348
513,864
Rest of Alberta
381,901
494,276
Manitoba
375,970
467,577
Saskatchewan
328,571
477,020
Nova Scotia
510,913
405,845
Newfoundland and Labrador
323,328
387,807
New Brunswick
324,667
344,549
Prince Edward Island
369,378
434,314
Figure 16: Change in House Prices (%) Between Q3 2024 and Q4 2035
("Additional-Supply" Scenario)
Source: CMHC calculations.
Note: House prices ($) represent the average price of a fixed
basket of residential properties with changes in value based on a CMHC repeat
sales price index. This is a different price measure than forecasted in the
CMHC Housing Market Outlook (HMO) publication.
Change in House Prices (%) Between Q3 2024 and Q4 2035 ("Additional-Supply" Scenario)
Regions
Change in price — Scenario with additional supply (%)
Toronto
19.8
Ottawa – Gatineau
-1.2
Rest of Ontario
-2.8
Montréal
8.9
Rest of Quebec
29.0
Vancouver
8.3
Rest of British Columbia
5.5
Calgary
7.3
Edmonton
25.2
Rest of Alberta
29.4
Manitoba
24.4
Saskatchewan
45.2
Nova Scotia
-20.6
Newfoundland and Labrador
19.9
New Brunswick
6.1
Prince Edward Island
17.6
Rental and ownership
Our model projects the future path of average rents separately from the path
of house prices. Both of these respond to changes in supply and demand and to
each other. Their paths can diverge because they react differently to interest
rates, for example. Increasing housing supply to lower the price of
homeownership will lead to some renters moving from rental to homeownership.
Figure 17 shows the impact of increasing housing supply on
average rents across Canada. We do not currently target a specific level of
affordability for households in rental units.
Figure 18 shows a breakdown of additional supply, given the
changing patterns of rents and house prices and the rise in ownership rates.
Figure 17: Difference in Rents Between "Additional-Supply" and
Business-as-Usual Scenarios, 2035 (%)
Source: CMHC calculations. Average rent of purpose-built
private rental units (apartments and rows, all bedroom types). This is a
different rent measure than forecasted in the CMHC Housing Market Outlook
(HMO) publication.
Projected Share of Total Additional Annual Housing Starts (Beyond Business-as-Usual), 2025 to 2035, by Tenure (%)
Regions
Ownership
Rental, primary market
Rental, secondary market
Toronto
83.7
12.6
3.8
Ottawa – Gatineau
71.7
23.6
4.7
Rest of Ontario
79.2
19.0
1.7
Montréal
61.8
32.1
6.1
Rest of Québec
n.a.
n.a.
n.a.
Vancouver
77.8
15.7
6.5
Rest of British Columbia
74.5
21.2
4.3
Calgary
77.3
14.9
7.8
Edmonton
n.a.
n.a.
n.a.
Rest of Alberta
78.0
18.3
3.7
Manitoba
70.9
26.2
2.8
Saskatchewan
81.5
15.3
3.2
Nova Scotia
74.1
24.6
1.3
Newfoundland and Labrador
n.a.
n.a.
n.a.
New Brunswick
n.a.
n.a.
n.a.
Prince Edward Island
77.7
20.5
1.8
Total
74.9
21.3
3.7
Exploring the results further
All models are, by necessity, simplifications of reality. There are many
real-world features that are omitted because, for example, we don’t have
the appropriate data or an understanding of all potential interactions. In
this section, we outline how results might change under different approaches,
leaving aside “normal” uncertainties of projecting the future.
The complexity of our model is significantly greater than our previous effort.
So, we also explore how sensitive the analysis is to different circumstances.
Scenario analysis is important, particularly in a world where demand for
housing can change rapidly but the supply system does not.
Demographic-only and economic approaches to understanding affordability and
housing supply
The traditional approach adopted by planners is to:
take demographic projections of population growth from agencies such as
Statistics Canada
transform them into projections of household numbers (as CMHC does)
use these household projections to assess how much housing is needed
The housing required reflects the growth in the number of households.
Added to this number will be the additional housing required to address
suppressed household formation; that is how many additional households there
would have been if house prices hadn’t been so high. This is done by
using a past reference point of household numbers when housing was more
affordable.
This approach has many advantages and is widely adopted and implemented across
Canada. The data exists to support it, particularly at the local or municipal
level. But it does have shortcomings, as it doesn’t include:
explicit affordability targets; or
demand for more housing increasing from economic variables such as higher
incomes and falling housing costs
These are addressed in our economic modelling. The economic approach
incorporates the demographic approach by including detailed population and
household projections. It then adds in the impact of economic variables such
as incomes and interest rates. The supply requirements projected by an
economic model will meet a defined affordability target.
The downside to the economic approach is that it’s significantly more
complicated and difficult to apply at the local level.
Incorporating additional effects in economic modelling explains why estimates
of housing supply requirements are higher with economic modelling than with
demographic-only modelling.
To illustrate this effect, consider the effect of building more housing. In
the demographic approach this will lead to more households being created as,
for example, adult children leave the family home. But more supply will also
lead to lower average prices, and the demographic approach is silent on the
impact of this effect.
Economic and statistical analysis finds that lower house prices lead to
additional actions, such as:
existing homeowners or renters moving to better-quality homes
renters moving to homeownership, the purchase of second homes, and so on
As a result, even more housing needs to be built.
The magnitude of this effect is important. If it’s too large in our
modelling, then the responsiveness of existing homeowners and renters to lower
prices would be lower in reality and less housing would need to be built. To
examine this, we can artificially lower this responsiveness in our
modelling.[2]
Reducing the responsiveness to its lowest plausible level reduces the number
of additional housing starts required by 20% (Figure 19 and Figure 20).
While this is a large difference in absolute terms, the underlying theme of
the need for more housing supply remains intact.
Figure 19: Impact of Reducing Price Responsiveness: Projected Additional
Annual Housing Starts (Beyond Business-as-Usual), 2025 to 2035
Source: CMHC calculations.
*Reducing the responsiveness to prices to the minimum value we can expect with
95% confidence.
Canada — Impact of Reducing Price Responsiveness: Projected Additional Annual Housing Starts (Beyond Business-as-Usual), 2025 to 2035
Region
"Additional-supply" scenario
Reducing how houdeholds respond to higher income*
Canada
232,840
199,988
We need to do further work in this area. Although we show results by different
types of housing (rental versus homeownership), we need to incorporate
more explicitly how the demand for particular types of housing increases as
incomes rise or as housing costs fall. It’s possible that reflecting the
differences across housing types would reduce the number of homes that need to
be built, since it would be easier to match what households would like to live
in with housing that’s available.
How might households respond to credible plans to increase housing supply, and
might they move to other means of saving?
While it’s possible to see housing as only a means of shelter, Canadians
tend to increase expenditure on housing as their incomes rise. They may want
better housing with more surface area or in better locations, or see it as a
means of savings and a way to benefit from higher prices.
What might happen if housing supply were to increase meaningfully over time at
the scale this report suggests? First, this would be a gradual process over
many years. Builders and developers can’t hire the workers and ramp up
investment quickly. Approval processes take time.
Some critics of previous supply gap reports suggested that an overnight
increase in housing supply of the magnitude suggested in the reports would
lead to sharp price decreases for housing that would drive a spike in debt
defaults. This doesn’t mesh with the reality of the time it takes for
construction to take place.
Indeed, a critical argument for increasing housing supply and restoring
affordability is to prevent rapid adjustment being forced on us. A global
economic downturn that leads to widespread unemployment and mortgage defaults
would be such an event. Canada’s high level of household indebtedness
creates this vulnerability.
As households see realistic policy commitments that increase housing supply,
they will likely lower the amount of their income devoted to housing over
time. This would also mean less housing that needs to be built.
We can explore these effects in our modelling. Now, higher incomes create more
demand for housing, but we can lower the extent to which this happens to its
lowest plausible level based on our statistical analysis.[3]
In this experiment, the amount of additional housing starts required is
reduced by 14%. If there were a change in Canadians’ interest in the
housing market, then less additional supply would be needed over the long term
to restore affordability.
Figure 21: Impact of Reducing Income Responsiveness: Projected Additional
Annual Housing Starts (Beyond Business-as-Usual), 2025 to 2035
Source: CMHC calculations.
*Reducing the responsiveness to income to the minimum value we can expect with
95% confidence.
Canada — Impact of Reducing Income Responsiveness: Projected Additional Annual Housing Starts (Beyond Business-as-Usual), 2025 to 2035
Region
"Additional-supply" scenario
Reducing how houdeholds respond to higher income*
Canada
232,840
199,988
[2] Technically, we reduce the responsiveness to lower prices to the minimum
value we can expect with 95% confidence.
[3] We lower the income elasticity of demand to the minimum level we can
expect with 95% confidence.
What is the impact of improving productivity in the construction industry?
The modelling infrastructure developed here can be adapted to look at a
variety of scenarios. A broader range of economic and demographic scenarios
will be developed over time to consider alternative outcomes for the housing
system. To illustrate potential uses, we look at the impact of improving
productivity in the construction industry.
We think of productivity in this case as the output per worker. More output
per worker can come about through increasing skills, automation, mass
manufacturing, the digitization of housing planning, stronger supply chains
and so forth.
Using more technology would allow construction to occur faster or with fewer
mistakes. Offsite mass manufacturing of large components of housing and their
assembly on site could enable more homebuilding with the same number of
workers.
We introduce this idea into our modelling as reductions in the cost of labour
per dwelling. There are real-world benefits that we can't capture, such as
faster completion times. Unfortunately, in this type of modelling, we also
can't capture why these changes may come about.
To illustrate the potential benefits of improving productivity in the
construction industry, we look at the impacts of:
a 10% increase in productivity; and
a 31% increase in productivity to match the average level of productivity
across all industries
These productivity improvements from the current workforce would add
significantly to the housing stock and reduce house prices by 2% to 6%
(Figure 23, Figure 24 and Figure 25).
In turn, increases in productivity that lead to lower prices in 2035 will have
a slightly dampening effect on the incentive to build more housing, which
is reflected in modelling results.
Figure 23: Canada — Impacts of Improving Productivity in Construction:
Difference in the Housing Stock Between the Productivity Shocks And
Business-as-Usual, 2035 (%)
Canada — Impacts of Improving Productivity in Construction: Difference in the Housing Stock Between the Productivity Shocks And Business-as-Usual, 2035 (%)
Region
10% productivity shock
Matching the average level of productivity across all industries (31% shock)
Canada
1.0
2.9
Figure 24: Canada — Impacts of Improving Productivity in Construction:
Average Annual Additional Housing Starts (Beyond Business-as-Usual) from 2025
to 2035 (Units)
Canada — Impacts of Improving Productivity in Construction: Average Annual Additional Housing Starts (Beyond Business-as-Usual) from 2025 to 2035 (Units)
Regions
10% productivity shock
Matching the average level of productivity across all industries (31% shock)
Canada
17,087
50,978
Figure 25: Canada — Impacts of Improving Productivity in Construction:
Difference in House Prices Between the Productivity Shocks And
Business-as-Usual, 2035 (%)
Canada — Impacts of Improving Productivity in Construction: Difference in House Prices Between the Productivity Shocks And Business-as-Usual, 2035 (%)
Regions
10% productivity shock
Matching the average level of productivity across all industries (31% shock)
Canada
-2.0
-5.7
The need to increase productivity in construction is evident not only from the
intense need to produce more housing but also from the relatively slow rate of
growth in productivity in this industry.
Evidence from the United States, which we're now refining for the Canadian
context, suggests that the pace of productivity growth in construction has
been low. The reasons for this are complex but American evidence points to the
relatively heavy local regulatory burden placed on the industry. Many firms
are too small to make the investments in technology needed to increase
productivity.
The need to improve productivity in residential construction is also important
given the broader implications of the need to increase supply. Increasing
housing supply will mean that the residential construction industry must get
bigger, taking more investment and workers, but this means taking resources
from the rest of the economy.
This need poses a risk that could damage the long-term prospects of the
Canadian economy if the productivity of the industry remains low.
Conclusions and Next Steps
The findings in this report highlight the importance of increasing housing supply to address Canada’s affordability challenges. This analysis and modeling mark an important step in improving our understanding of Canada’s housing system and the challenges we face.
Further enhancements to the model will be made over time. The underlying model is described in a separate technical document that is available upon request. We commit to further consultations and improvements.
With the modelling infrastructure in place, we have the scope to look at a wider range of options to address Canada’s housing challenges. We can also examine a wider range of long-term demographic and economic scenarios, for example.
Some of the further work will examine greater differences in the types of housing that are required.
Download the report
Get your copy of CMHC’s report, Canada’s Housing Supply Shortages: Moving to a New Framework and discover why building more homes is key to restoring housing affordability in Canada.