What is the Canada Secondary Suite Loan Program (CSSLP)?
The Canada Secondary Suite Loan Program (CSSLP) no longer exists. Ottawa created it in Budget 2024, doubled the loan to $80,000 in the 2024 Fall Economic Statement, promised a launch in early 2025, then confirmed in Budget 2025 that the program was never made operational and would not be implemented. No application ever opened. What did launch on January 15, 2025, is a CMHC-insured refinance built specifically to pay for suite construction. The rule that derails the most projects is about sequence rather than money: the $80,000 loan is gone, and the refinance that replaced it only works if you arrange it before the first wall comes down.
Key Takeaways
- The $80,000 CSSLP was confirmed cancelled in Budget 2025 and never opened for applications.
- The CMHC insured refinance funds suite construction at up to 90% of your home’s as-improved value.
- CMHC has to approve the financing before construction starts, so line it up before hiring a contractor.
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What Happened to the Canada Secondary Suite Loan Program?
The Canada Secondary Suite Loan Program was cancelled in Budget 2025 without ever accepting a single application. Budget 2024 created it as a $40,000 low-interest loan and set aside $409.6 million over 4 years for the Canada Mortgage and Housing Corporation (CMHC) to administer it. The 2024 Fall Economic Statement doubled the loan to $80,000, set a fixed rate of 2% over a 15-year term, and committed to an early-2025 launch. CMHC never published a term sheet, and the housing chapter of Budget 2025 contains no secondary suite loan at all. The reason given for dropping it was overlap with the insured refinance that had gone live weeks earlier.
The two measures are easy to confuse because the government announced them on the same day in December 2024. They were separate: one was a direct low-interest loan from CMHC, the other a change to mortgage insurance rules. Only the second one launched, and it is the one described below.
What Is a Secondary Suite?
A secondary suite is a self-contained living unit inside or attached to a primary residence, with its own entrance, kitchen, bathroom and living space. Basement apartments, in-law suites, laneway houses and garden suites all qualify.
Two conditions separate a legal suite from a finished basement. Your municipality’s zoning has to permit a second unit on the lot, and the build has to meet the building code for a separate dwelling, which normally means egress windows, fire separation between units, and often a dedicated electrical panel and heating control. A side door and a hot plate will not satisfy a lender or an insurer. Municipal rules are moving quickly here, and some cities now pair new suite permissions with vacant-land taxes and other measures, so confirm your own zoning before you price anything.
What the CSSLP Was Supposed to Offer
These were the announced terms, none of which ever took effect:
- Maximum loan of $80,000, doubled from the $40,000 announced in Budget 2024
- Fixed interest rate of 2% for the life of the loan
- Repayment over a 15-year term
- Administration by CMHC, with a launch targeted for early 2025
None of it is available. CMHC never opened an application process, never published eligibility criteria, and never advanced a dollar under the program.
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How the CMHC Insured Refinance for Secondary Suites Works
The CMHC insured refinance lets you borrow against what your home will be worth after the suite is built—up to 90% of that as-improved value—with a lending value capped at $2 million, amortized over as long as 30 years. It took effect January 15, 2025, and it is the federal financing route that actually exists. The full terms are on CMHC’s refinance program page.
The as-improved part is the whole point. A conventional cash-out refinance caps at 80% of the home’s current value, which rarely covers a six-figure build.
Why Refinancing for Equity Was Not Insurable Before 2025
Mortgage default insurance in Canada protects the lender when a borrower puts down less than 20%. Refinancing to pull equity out lost access to that insurance in 2016, when federal rules tightened to cool the housing market. The secondary suite refinance is a narrow exception carved back out of that 2016 change, not a general reopening of insured refinances. Draw equity for anything else, including consolidating other debt, and you are back in the uninsured 80% world.
Who Qualifies for the CMHC Insured Refinance?
CMHC sets the following conditions on the program:
- You already own the home, and you or a close relative (spouse, common-law partner, parent or child) occupies one of the units
- Up to 4 units in total on the property, counting the ones already there
- Maximum 90% loan-to-value (LTV) on the as-improved value, with a $2 million ceiling on the lending value
- At least one borrower or guarantor with a credit score of 600 or higher
- Gross debt service (GDS) of 39% and total debt service (TDS) of 44%, qualified at the greater of your contract rate plus 2% or 5.25%
- Funds applied to construction costs only, with no equity take-out on top of the project
- No short-term rental use, since a minimum 90-consecutive-day rental term applies to the new suite
- CMHC approval of the insured financing before construction starts, or at a very early stage
Read the occupancy rule and the 90-day rule together, and the program’s design becomes obvious. This is a homeowner product, not an investor product. If you plan to run the suite as a nightly rental, or you do not live in the property, the insured refinance is not your route.
How the Money Reaches You During Construction
Funds come out in progress advances rather than as a single amount at closing. CMHC validates up to 4 consecutive advances under its full-service option at no cost, or your lender validates them under the basic-service option. You submit an improvement list, cost estimates, building plans and a permit before approval, then verification once the suite is finished.
Plan your cash flow around that schedule. Most contractors want a deposit before any advance is released, which means you carry the early stage of the build yourself.
What an Insured Suite Refinance Looks Like on Real Numbers
Take an Ontario home worth $700,000 today with a $380,000 mortgage on it, and a quoted suite budget of $150,000. The appraiser sets the as-improved value at $820,000.
Lending value is the lesser of the as-is value plus improvements ($850,000) or the as-improved value ($820,000), so $820,000 governs. That puts the insured ceiling at $738,000. Your new mortgage would be the existing $380,000 plus the $150,000 project, or $530,000, which sits at roughly 65% of the as-improved value. The LTV cap is nowhere near binding.
Change one input. Same home, same suite, but a $600,000 existing balance. The new mortgage of $750,000 exceeds the $738,000 ceiling, leaving you $12,000 short and requiring you to fund that gap from savings.
A one-time CMHC premium also applies to the insured amount and can be added to the balance, so budget it into the total rather than the monthly payment. On most files, the 90% cap is not what kills the deal: debt service at the qualifying rate and the approval-before-construction rule do far more damage. Run your own figures through the mortgage refinance calculator before you commit to a construction budget.
What Are the Other Ways to Finance a Secondary Suite?
Three routes cover most homeowners, and the right one depends on how much equity you have before the build starts. The insured refinance above is usually the only option once the suite pushes your borrowing past 80% of the home’s value, because nothing else gets you to 90%.
With 20% equity or more to spare, a home equity line of credit (HELOC) or one of the other renovation financing options skips both the insurance premium and the advance-validation process. You draw as you go, which suits a phased build, though the rate is normally higher than an insured mortgage and the amortization will not stretch to 30 years.
Provinces and municipalities run their own suite incentives, and they open and close quickly. British Columbia’s pilot stopped accepting applications after March 30, 2025. Check your provincial housing ministry and your own municipality directly before you assume a named grant is still live.
Rate direction feeds into this choice, since a HELOC follows prime while a refinance locks a term. Our mortgage rate forecast is the page to read before you pick a structure.
Should You Build a Secondary Suite?
A secondary suite pays for itself through rent on most files, but only once construction cost, financing cost and local rents line up, so price all three before you sign a contractor agreement.
Where it works: rent from the suite covers a meaningful share of the payment, a properly permitted suite adds resale value, and a multi-generational household gains independence without buying a second property. Projected rental income can also be used in your qualification, which is often what makes the debt service math work at all.
Where it breaks: a code-compliant suite runs well into six figures in most markets, and delays and cost overruns are the norm on conversions rather than the exception. Zoning is another common dead end, since parking minimums, unit-size floors, and owner-occupancy rules vary from one block to the next. Becoming a landlord brings leases, maintenance calls and turnover, and none of that shows up in a construction quote.
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Frequently Asked Questions (FAQ) on Secondary Suite Financing
Is the Canada Secondary Suite Loan Program still available?
No, the Canada Secondary Suite Loan Program (CSSLP) is not available, and it never was. Budget 2025 confirmed that the program was not made operational and would not be implemented, and CMHC never opened an application process for it. The CMHC insured refinance is the federal option that replaced it.
Can I use the insured refinance to renovate an existing suite?
Yes, the insured refinance can fund work on an existing suite, provided the result is a self-contained unit that meets your municipality’s zoning and the building code. The financing rules do not change either way: approval before or very early in construction, and no equity take-out beyond the project cost.
Who can rent a secondary suite financed this way?
You can rent a secondary suite to anyone, including a family member, as long as the tenancy runs for at least 90 consecutive days. Short-term and nightly rentals are excluded under the insured refinance, which exists to add long-term rental housing rather than tourist accommodation.
How much could I borrow against a $500,000 home?
On a $500,000 home whose as-improved value comes to $600,000 once the suite is finished, the insured ceiling is 90% of $600,000, or $540,000, less whatever you still owe. A $300,000 balance would leave $240,000 of room, though you can only draw what the construction actually costs, and you still have to pass debt service at the qualifying rate.
What happens if I sell the property before the refinance is paid off?
The outstanding balance on a secondary suite refinance is repaid out of the sale proceeds, the same as with any mortgage. Speak with your lender before listing if you are selling soon after construction, because the as-improved appraisal behind your approval may not match the value a buyer’s lender uses.
Final Thoughts
The $80,000 Canada Secondary Suite Loan Program (CSSLP) is gone, and it was never actually available. What remains is a narrow, well-defined insured refinance that works if you own the home, live in it, plan to rent long-term, and get the financing approved before the first wall comes down.
Sequence matters more than the cap on this file. Homeowners get stuck because they hire the contractor first and arrange financing second, by which point CMHC can no longer insure the refinance.
Connect with the nesto mortgage experts to price an insured refinance against your actual equity position in a HELOC before you lock in a construction budget.
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