30 Year Mortgage on a Duplex or Triplex in Canada

30-Year Mortgage

This article is for informational purposes only and does not constitute financial advice. Speak with a licensed mortgage professional before making any mortgage decisions.

Quick Answer

Quick Answer

Yes — Canadians can get a 30-Year Mortgage amortization on a duplex or triplex, but eligibility is gated by four conditions: the property must be owner-occupied (you live in one unit), the purchase price must be under the federal insured cap, you must qualify under the OSFI B-20 stress test, and the property must fit either the first-time-buyer or newly built home carve-out. Owner-occupied 2–4 unit properties are the only multi-unit path to a 30-year insured mortgage. Pure investment or rental properties are excluded and typically max out at a 25-year amortization with 20% or more down. Down-payment minimums step up as unit count rises, and rental income from the other units can often be used to help you qualify.

Why This Question Matters Right Now

Federal rules on 30-year mortgage amortization changed in 2024 and again in 2025. Most explainers still treat the topic as a single-family, first-time-buyer story — which leaves anyone eyeing a duplex or triplex reading contradictory guidance across half a dozen tabs.

The truth is simpler than it looks. To get a 30-year mortgage amortization on a 2–4 unit property in Canada, you need to clear four gates: owner-occupancy, the insured price cap, the mortgage stress test, and one of two eligibility carve-outs. Miss any one, and you will typically be looking at a 25-year amortization with a larger down payment instead.

4 Eligibility gates to clear
$1.5M Federal insured price cap
2–4 Unit range that qualifies (owner-occupied)
30 yr Max insured amortization (with carve-out)

This guide walks through each gate in plain English, shows how the down-payment math shifts as unit count rises, and gives you a step-by-step roadmap. If you are new to the process, our first-time home buyer resource hub and our companion overview of the 30-year mortgage in Canada pair well with the material here.

Quick Start: Pick Your Path

Direct Answer. To find your path, answer three questions in order. Will you personally live in one of the units? Is the purchase price under the current federal insured mortgage cap? And are you either a first-time home buyer or purchasing a newly built home? Three “yes” answers typically put you on the 30-year insured amortization path.
Path A — 30-year insured

You will live in one unit, price is under the insured cap, and you meet the first-time-buyer or new-build carve-out.

Path B — New-build only

You will live in one unit and the property is newly built (never previously occupied), but you are not a first-time buyer.

Path C — 25-year uninsured

You plan to rent out all units, the price is over the insured cap, or you do not meet either carve-out. You will typically need 20% or more down.

Next step

Get an instant pre-approval certificate to see numbers on your actual file.

The Four Eligibility Gates Explained

Direct Answer. Four conditions gate 30-year insured amortization on a duplex or triplex: you must live in one unit, the purchase price must be under the federal insured cap, you must pass the mortgage stress test, and the property must qualify under either the first-time-buyer or newly built home rule. All four are non-negotiable.

Gate 1 — Owner-occupancy

You (or an immediate family member) must live in one of the units as your principal residence. This is what makes the property residential in the eyes of Canada’s mortgage default insurers — CMHC, Sagen, and Canada Guaranty — rather than a commercial investment. Pure rental buildings do not qualify, no matter the price or unit count.

Gate 2 — Insured purchase-price cap

The federal government sets a maximum purchase price for insured mortgages, and only properties under that cap can carry the 30-year insured amortization. Any duplex or triplex priced above the cap must be financed as an uninsured mortgage, which typically requires 20% or more down and a shorter amortization. Our mortgage glossary defines the underlying terms.

Gate 3 — The OSFI B-20 stress test

Every federally regulated Canadian mortgage borrower must qualify at the greater of contract rate plus 2% or 5.25%. In practice, the lender pretends your rate is higher than what you will actually pay and confirms your income can still service the loan. The stress test is the same for a duplex as for a house.

Gate 4 — The FTHB or new-build carve-out

Under current federal rules, 30-year insured amortization is available only when the borrower is a first-time home buyer, or when the property is a newly built home. Our first-time-buyer 30-year explainer goes deeper on this rule.

Down Payment: How Unit Count Changes the Rules

Direct Answer. For owner-occupied insured mortgages in Canada, the minimum down payment rises with unit count. A 1-unit or 2-unit property typically requires 5% on the first $500,000 and 10% on the portion between $500,000 and the insured cap. A 3-unit or 4-unit property typically requires a flat 10% minimum. Investment properties with no owner-occupancy typically require 20% or more.
Pegasus Mortgage Lending
Minimum Down Payment by Unit Count
Owner-occupied insured mortgages · Canada · 2026 rules · Illustrative only — not a forecast.
Property type Down on first $500K Down on $500K–$1.5M Insured cap
1 unit (single-family)5%10%$1.5M
2 units (duplex)5%10%$1.5M
3 units (triplex)10%10%$1.5M
4 units (fourplex)10%10%$1.5M
Investment (no owner-occupancy)20% or more (uninsured)n/a
Source: Department of Finance Canada; CMHC eligibility guidance (2026). Illustrative only — not a forecast.
Pegasus Mortgage Lending Center Inc. FSRA Lic # 11479

The unit-count tiers matter because a triplex costs more per square foot than a duplex in most Canadian markets, and the higher minimum down payment on 3–4 unit properties often catches buyers off guard. Running the numbers through our down payment calculator before you make an offer can save an awkward conversation with your lender.

Using Rental Income to Qualify

Direct Answer. On an owner-occupied duplex or triplex, lenders can typically use a portion of the projected rental income from the other units to help you qualify. The two common approaches are the rental offset (subtracts rent from housing costs) and the rental add-back (adds rent to your income). Treatment varies materially by lender.

For a first-time buyer stretching into a duplex, rental income can be the difference between qualifying and being told to look at something smaller. Because policy differs so widely across the fifty-plus lenders active in Canada, the right lender for a multi-unit file is often not the buyer’s everyday bank.

This is where broker experience matters. Razi Khan, Founder and Mortgage Broker at Pegasus, often notes that two lenders looking at the same duplex can produce approval amounts that differ by six figures purely on how each treats projected rent. A broker who places these files regularly knows which lenders use market rent, which require signed leases, and which cap the offset. Our deeper piece on how rental income can help you qualify walks through the mechanics.

25-Year vs 30-Year Mortgage on a Duplex: The Cost Difference

Direct Answer. Stretching a duplex mortgage from 25 to 30 years typically lowers your monthly payment by a meaningful amount but materially increases the total interest paid. On an illustrative $800,000 owner-occupied duplex with 10% down at a sample rate, the monthly payment falls but total lifetime interest often rises by tens of thousands. The trade-off is cash flow today for cost tomorrow.
Pegasus Mortgage Lending
Monthly Payment: 25-Year vs 30-year mortgage amortization
Illustrative $800,000 owner-occupied duplex · 10% down · sample 4.50% 5-year fixed rate · CMHC premium included. Illustrative only — not a forecast.
25-year monthly
~$4,110
30-year monthly
~$3,740
Monthly gain
~$370 / month
Methodology: Pegasus mortgage payment calculator, semi-annual compounding. Illustrative only — not a forecast.
Pegasus Mortgage Lending Center Inc. FSRA Lic # 11479
Pegasus Mortgage Lending
Total Interest Paid Over the Life of the Loan
Same illustrative inputs as monthly payment chart · the trade-off for lower monthly cash outflow. Illustrative only — not a forecast.
25-year total interest
~$490,000
30-year total interest
~$605,000
Extra interest
~$115,000
Methodology: Pegasus mortgage payment calculator, semi-annual compounding. Illustrative only — not a forecast.
Pegasus Mortgage Lending Center Inc. FSRA Lic # 11479

These figures are illustrative only — not a forecast. Your actual numbers will depend on the rate you qualify for, the exact purchase price, and any insurance premium added to the loan. Current rate ranges are on our rate details page, and you can model your scenario with the mortgage payment calculator.

The right choice depends less on the math and more on your plan. Our companion piece on 25 vs 30-year mortgage amortization choices covers the decision in more depth.

Your Step-by-Step Roadmap

  1. 1
    Confirm owner-occupied intent.Decide which unit will be your principal residence and commit to it — this is the first gate for 30-year insured eligibility.
  2. 2
    Get a real pre-approval.Not an online estimate — a lender-verified pre-approval that accounts for stress-test math, unit count, and rental income treatment.
  3. 3
    Compare lenders on multi-unit policy.A broker who shops fifty-plus lenders will surface the ones whose policies fit your file best.
  4. 4
    Make an offer with financing conditions.Multi-unit appraisals can turn up surprises — legal secondary suites, zoning quirks, rental history questions — so keep a financing condition.
  5. 5
    Finalize the mortgage.Provide signed leases (or market-rent letters), confirm insurance quotes if the mortgage is insured, and lock the rate.
  6. 6
    Close and take possession.A lawyer (or notary in Quebec) registers the mortgage and transfers title.

Common Mistakes to Avoid

The buyers who run into trouble on multi-unit files typically make one of these six mistakes:

  • Misrepresenting owner-occupancy. Claiming you will live in the property when you will not is mortgage fraud — and the paper trail almost always catches up.
  • Ignoring the insured price cap. A property one dollar over the cap forces the file into uninsured territory, which typically means 20% down and no 30-year mortgage amortization.
  • Misusing projected rental income. Not every lender uses the same offset percentage, and some require signed leases before closing rather than market-rent estimates.
  • Skipping the stress-test math. A payment you can afford at 4.5% may not qualify at the stress-test rate. Run both numbers before you fall in love with a listing.
  • Assuming all lenders treat multi-unit files the same. Duplex and triplex policy varies more across lenders than any other product category — including on files with complex income, which our alternative lending resource touches on.
  • Forgetting Quebec closing costs. In Quebec, closing is handled by a notary rather than a lawyer, and the fee structure is different.

Frequently Asked Questions

Can I really get a 30-year mortgage on a duplex in Canada?

Yes, provided the property is owner-occupied, priced under the federal insured cap, and you qualify under either the first-time home buyer rule or the newly built home rule. Pure investment duplexes typically cap at a 25-year amortization with 20% or more down.

Do I have to live in the duplex to get a 30-year amortization?

Owner-occupancy is a hard requirement for the 30-year insured amortization path on a 2 to 4 unit property in Canada. You or an immediate family member must occupy one of the units as your principal residence. Purely tenanted buildings are treated as investment properties and typically max out at 25 years.

What is the minimum down payment for a duplex or triplex in Canada?

On an owner-occupied insured mortgage, a duplex typically requires 5 percent on the first 500,000 dollars and 10 percent on the portion above that up to the insured cap. A triplex or fourplex typically requires 10 percent on the full purchase price. Uninsured investment purchases typically require 20 percent or more down.

Can I use the rent from the other unit to help me qualify?

Yes, in most cases. Lenders can typically use a portion of projected rental income from the units you will not occupy, often 50 to 80 percent depending on the lender policy. Treatment varies significantly, so the same file can produce different approval amounts across lenders.

Does the 30-year rule apply if the duplex is a brand new build?

Under current federal rules, an owner-occupied duplex that is a newly built home (never previously occupied) can qualify for a 30-year insured amortization even if the buyer is not a first-time buyer. This carve-out runs parallel to the first-time buyer rule.

What happens if the purchase price is over the insured cap?

The mortgage typically must be uninsured, which usually means a minimum 20 percent down payment, a maximum 25-year amortization, and pricing that reflects the higher risk category. The 30-year insured path is unavailable regardless of borrower profile once the price crosses the cap.

Is a 30-year amortization actually a good idea, or does it just cost more?

It depends on your priority. A 30-year amortization lowers monthly payments and can improve cash flow and qualification room, but you will typically pay materially more total interest over the life of the loan. If the lower payment keeps your finances stable, it can be worth the trade. If not, a 25-year amortization is often cheaper long term.

Are the rules different in Quebec for buying a duplex or triplex?

The federal mortgage rules apply in Quebec the same as elsewhere in Canada. What differs is closing: in Quebec, a notary (not a lawyer) handles the transaction, and Revenu Quebec has its own rules on rental income taxation. Budget for notarial fees separately from your mortgage costs.

More questions? Browse our full mortgage FAQ.

Ready to See What You Qualify For?

A duplex or triplex file rewards experience. If the numbers might work but the rules feel tangled, that is normal — this is a category where the right lender changes the answer.

Get an instant pre-approval →
This article is for informational purposes only and does not constitute financial advice. Rates, insurance premiums, and government rules change; all figures above are illustrative only — not a forecast. Speak with a licensed mortgage professional before making any mortgage decisions. Pegasus Mortgage Lending Center Inc. · FSRA Lic # 11479.
Razi Khan — Founder, CEO and Mortgage Broker at Pegasus Mortgage Lending

About the author

Razi Khan

Founder, CEO & Licensed Mortgage Broker · Pegasus Mortgage Lending · Toronto, Ontario · FSRA Lic # 11479

Razi Khan is the Founder, CEO, and a licensed Mortgage Broker at Pegasus Mortgage Lending Center Inc., based in Toronto. With over 20 years of experience in the Canadian mortgage industry, Razi has personally guided more than 3,000 clients through some of the most complex and high-stakes financial decisions of their lives — from first-time purchases in the GTA to refinancing strategies, alternative lending solutions, and cross-border mortgages for Canadians buying in the United States.

Razi founded Pegasus in October 2008, launching the brokerage at the height of a global financial crisis. He works across the full spectrum of borrower profiles, with particular expertise in complex files including self-employed borrowers, credit-challenged clients, and investors building multi-property portfolios.

Sources & References

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