Mortgage Insurance Rule Changes Enable Homeowners to Add Secondary Suites

Amy Kinvig • January 2, 2025

As housing affordability challenges persist across Canada, innovative solutions are reshaping the way homeowners can contribute to housing supply. Starting January 15, 2025, new mortgage insurance rule changes will allow Canadian homeowners to access insured refinancing options to create secondary suites, such as basement apartments or laneway homes.


This move, announced in Budget 2024 and detailed by the Department of Finance Canada, is part of a broader strategy to increase housing density and improve affordability while offering homeowners the chance to generate additional income.


Why These Changes Matter

Historically, converting extra space into rental units has been both costly and mired in municipal red tape. Recent zoning reforms across Canada’s major cities, driven by Housing Accelerator Fund agreements, are reducing these barriers. The creation of secondary suites not only expands housing supply but also provides financial benefits to homeowners, such as offering seniors additional income to support aging in place.


Key Parameters for the New Rules

The new mortgage insurance program is designed to enable homeowners to build legal, self-contained secondary suites that comply with municipal requirements.


Here are the essential details:

Eligibility Requirements

Homeowners must already own the property.

The homeowner or a close relative must occupy one of the existing units.

Additional units must not be used as short-term rentals.


Project Specifications

New units must be fully self-contained with separate entrances (e.g., basement suites, laneway homes).

Up to four total dwelling units are allowed, including existing units.


Financial Parameters

The “as improved” property value must be less than $2 million.

Homeowners can refinance up to 90% of the property’s value, including the enhanced value from secondary suites.

The maximum amortization period is 30 years.

Additional financing must not exceed the project’s costs.


When Do These Rules Take Effect?

Starting January 15, 2025, lenders can submit applications for mortgage insurance under these updated parameters. This applies to all eligible properties across Canada, provided the new units align with municipal zoning requirements.


What This Means for Homeowners

For homeowners with underutilized space, such as basements or detached garages, this new program offers an opportunity to increase property value and create a source of long-term income. By building legal secondary suites, homeowners can contribute to Canada’s rental housing market while gaining financial security.


A Step Toward Housing Solutions

As housing supply remains a pressing issue, these mortgage insurance changes reflect a commitment to practical, homeowner-driven solutions. Whether you’re a senior looking to age in place or a family seeking to maximize your property’s potential, these changes represent an exciting opportunity to invest in your home and your community.

Stay informed and explore your options with your lender to determine if this program is right for you. The path to unlocking your property’s potential begins in 2025.


Amy Kinvig
By Amy Kinvig April 16, 2025
Bank of Canada holds policy rate at 2¾%. FOR IMMEDIATE RELEASE Media Relations Ottawa, Ontario April 16, 2025 The Bank of Canada today maintained its target for the overnight rate at 2.75%, with the Bank Rate at 3% and the deposit rate at 2.70%. The major shift in direction of US trade policy and the unpredictability of tariffs have increased uncertainty, diminished prospects for economic growth, and raised inflation expectations. Pervasive uncertainty makes it unusually challenging to project GDP growth and inflation in Canada and globally. Instead, the April Monetary Policy Report (MPR) presents two scenarios that explore different paths for US trade policy. In the first scenario, uncertainty is high but tariffs are limited in scope. Canadian growth weakens temporarily and inflation remains around the 2% target. In the second scenario, a protracted trade war causes Canada’s economy to fall into recession this year and inflation rises temporarily above 3% next year. Many other trade policy scenarios are possible. There is also an unusual degree of uncertainty about the economic outcomes within any scenario, since the magnitude and speed of the shift in US trade policy are unprecedented. Global economic growth was solid in late 2024 and inflation has been easing towards central bank targets. However, tariffs and uncertainty have weakened the outlook. In the United States, the economy is showing signs of slowing amid rising policy uncertainty and rapidly deteriorating sentiment, while inflation expectations have risen. In the euro area, growth has been modest in early 2025, with continued weakness in the manufacturing sector. China’s economy was strong at the end of 2024 but more recent data shows it slowing modestly. Financial markets have been roiled by serial tariff announcements, postponements and continued threats of escalation. This extreme market volatility is adding to uncertainty. Oil prices have declined substantially since January, mainly reflecting weaker prospects for global growth. Canada’s exchange rate has recently appreciated as a result of broad US dollar weakness. In Canada, the economy is slowing as tariff announcements and uncertainty pull down consumer and business confidence. Consumption, residential investment and business spending all look to have weakened in the first quarter. Trade tensions are also disrupting recovery in the labour market. Employment declined in March and businesses are reporting plans to slow their hiring. Wage growth continues to show signs of moderation. Inflation was 2.3% in March, lower than in February but still higher than 1.8% at the time of the January MPR. The higher inflation in the last couple of months reflects some rebound in goods price inflation and the end of the temporary suspension of the GST/HST. Starting in April, CPI inflation will be pulled down for one year by the removal of the consumer carbon tax. Lower global oil prices will also dampen inflation in the near term. However, we expect tariffs and supply chain disruptions to push up some prices. How much upward pressure this puts on inflation will depend on the evolution of tariffs and how quickly businesses pass on higher costs to consumers. Short-term inflation expectations have moved up, as businesses and consumers anticipate higher costs from trade conflict and supply disruptions. Longer term inflation expectations are little changed. Governing Council will continue to assess the timing and strength of both the downward pressures on inflation from a weaker economy and the upward pressures on inflation from higher costs. Our focus will be on ensuring that Canadians continue to have confidence in price stability through this period of global upheaval. This means we will support economic growth while ensuring that inflation remains well controlled. Governing Council will proceed carefully, with particular attention to the risks and uncertainties facing the Canadian economy. These include: the extent to which higher tariffs reduce demand for Canadian exports; how much this spills over into business investment, employment and household spending; how much and how quickly cost increases are passed on to consumer prices; and how inflation expectations evolve. Monetary policy cannot resolve trade uncertainty or offset the impacts of a trade war. What it can and must do is maintain price stability for Canadians. Information note The next scheduled date for announcing the overnight rate target is June 4, 2025. The Bank will publish its next MPR on July 30, 2025. Read the April 16th, 2025 Monetary Report
By Amy Kinvig April 9, 2025
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