New 2025 Program Allows Homeowners to Refinance Up to 90% for Secondary Suites: What You Need to Know

Tim Lyon • October 18, 2024

On October 8, 2024, the government announced a new program that will take effect on January 15, 2025, allowing homeowners to refinance up to 90% of their home’s value to create secondary suites. This is a significant increase from the current refinancing limit of 80%. The program aims to provide homeowners with more flexibility to unlock their home equity and add additional legal units like basement suites or laneway homes, provided they meet municipal zoning requirements and are not used for short-term rentals.


The program comes with specific guidelines, outlined by CMHC (Canada Mortgage and Housing Corporation), that include:

  • Eligibility: Homeowners must already own their property, live in one of the existing units, and plan to add additional fully self-contained suites.
  • Refinancing Details: Homeowners can refinance up to 90% of the property's value, including the value added by the new units. The maximum property value, once the new units are built, must not exceed $2 million.
  • Loan Parameters: The loan-to-value limit will be 90%, and the maximum amortization period is 30 years. Any additional financing must not exceed project costs.


To give an example, under this new program, if a home is valued at $800,000, homeowners could now refinance up to $720,000 for building a secondary suite—$80,000 more than the previous limit of $640,000.


This program could be particularly beneficial for homeowners who have recently purchased their property and built up a moderate amount of equity, offering them an opportunity to create an income-generating suite or expand their home without needing to sell. As housing affordability continues to be a pressing issue in many parts of Canada, adding secondary suites could also contribute to easing the rental supply shortage.


While this program represents a significant step forward in unlocking home equity for homeowners, we are still awaiting specific guidelines from lenders. These rules will clarify how lenders will approach refinancing applications under this program. Stay tuned for further updates as more information becomes available from financial institutions.


This program is expected to spark significant interest, particularly from younger homeowners or those with growing families, as it offers a pathway to enhance both living space and long-term financial stability. Homeowners looking to leverage this new opportunity should consult with mortgage experts to fully understand the potential benefits and ensure they are making informed decisions.


If you're interested in how this program could benefit you or want to explore refinancing options to add a secondary suite, get in touch with a mortgage professional today.


Tim Lyon

Mortgage Consultant

25 Year vs 30 Year Amortization: A Practical Guide

By Tim Lyon • January 25, 2026
Trying to choose between a 25 and 30 year mortgage amortization? Learn how each affects your payments, interest, and flexibility so you can decide with confidence.

How Rental Income Impacts Your Mortgage Approval (And Why Lender Choice Matters)

By Tim Lyon • January 20, 2026
If you are buying a home with a suite, keeping your current home as a rental, or already own a rental property, mortgage qualification can get confusing fast. The frustrating part is that you can do everything “right” and still get very different answers depending on which lender you talk to. Here’s a simple breakdown so you understand it and don’t miss out. What are Debt Service Ratios? In Canada, lenders qualify you using two main ratios: Gross Debt Service (GDS) This looks at housing costs only , typically: Mortgage payment Property taxes Heating 50% of strata fees (if applicable) GDS typically needs to be 39% or less of your gross income. Total Debt Service (TDS) This includes everything in GDS , plus other debts like: Car loans Credit cards Lines of credit Student loans TDS typically needs to be 44% or less of your gross income. These ratios are the foundation. If they do not work, the lender will not approve the mortgage, even with strong credit and a solid down payment. How Lenders Treat Rental Income Most people assume lenders look at rental properties based on simple cash flow (rent minus mortgage payment). In reality, most lenders use one of two methods: 1) Addback A percentage of the rental income is added to your gross income for qualification purposes. 2)Offset A percentage of the rental income is subtracted from the mortgage payment tied to the rental property. Different lenders use different percentages and different worksheets. That is why the same borrower can qualify with one lender and fail with another. Benefits of Understanding Lender Methods When you understand how rental income is calculated, you can: Avoid being under-qualified by a lender with conservative rules Get a more accurate picture of your real purchasing power Choose a lender that fits your situation (instead of forcing your situation to fit the lender) Important Considerations A few key points to keep in mind: Rental income is rarely counted at 100% , but some lenders are more generous than others. The method matters just as much as the percentage (addback vs offset). If you own multiple properties, lender worksheets can change the result dramatically. Your lender choice is a strategy decision , not just a rate decision. Real-World Example: Same Clients, Two Very Different Outcomes Here’s an example comparing lenders Scotiabank and Strive, using a fictitious couple: Scenario Household income: $160,000 Existing townhome: $800,000 value with a $525,000 mortgage ( $2,500/month payment) Market rent for the townhome: $3,400/month New purchase: property with a rental suite generating $1,800/month Down payment: 10% Other debts: student loan $165/month , car loan $500/month How Scotiabank viewed it For the townhome rental, they counted half the rent and subtracted the mortgage payment, leaving an $800/month shortfall that gets added into the debt ratios. For the new purchase, 50% of the suite income gets added to income. Max mortgage : $650,700 Max purchase price : $723,000 How Strive viewed it For the townhome rental, Strive used a rental worksheet and calculated $5.20/month of income that can be added to the application. For the new purchase, 100% of the suite income gets added to income, and they did not need to include taxes or heat. Max mortgage : $878,400 Max purchase price : $976,000 The result That’s a $253,000 difference in purchasing power , with the same clients, same income, same debts, and same properties. The difference was lender policy. Quick Summary GDS and TDS ratios are the backbone of mortgage qualification. Rental income is usually counted using Addback or Offset , and each lender handles this differently. Two lenders can produce wildly different results, even with the exact same file. In the example above, lender choice created a $253,000 swing in purchasing power. Next Steps If you are planning to: Buy a home with a suite Keep your current home and convert it to a rental Use rental income to qualify Reach out and I will run the numbers across multiple lenders so you see what you actually qualify for, not just what one lender will allow. Need help with your mortgage? Book a consultation or call 778-988-8409 . Glossary Addback : A method where a lender adds a percentage of rental income to your gross income for qualification. Gross Debt Service (GDS) : The ratio that measures housing costs as a percentage of gross income. Offset : A method where a lender subtracts a percentage of rental income from the rental property’s mortgage payment for qualification. Total Debt Service (TDS) : The ratio that measures housing costs plus other debts as a percentage of gross income.