Short answer
Commercial mortgages are underwritten on the property's income rather than mainly on personal income, with lenders looking for a debt service coverage ratio of roughly 1.20 to 1.25. Expect 25% to 35% down, shorter terms than residential, amortizations of 15 to 25 years, and lender or broker fees built into the deal. Rates and structure vary widely by property type, tenant quality and location.

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What a Commercial Mortgage Is
A commercial mortgage is financing secured against property used primarily to generate income or run a business, rather than as an owner's principal residence. In Canada that covers office buildings, retail and strip plazas, industrial and warehouse space, multi-family residential buildings of five units or more, mixed-use buildings, hospitality, self-storage, and raw land held for development.
The key difference from a residential mortgage is what the lender underwrites. A residential lender underwrites you — your income, your credit, your debt ratios. A commercial lender underwrites the property first: what it earns, how reliably it earns it, and whether that income comfortably covers the loan payments. Your own financial strength matters, but it is the second question, not the first.
How Commercial Lenders Decide: DSCR, LTV and Cap Rate
Three numbers drive almost every commercial approval in Canada.
Net Operating Income (NOI) — annual rental revenue less vacancy allowance and all operating expenses (property taxes, insurance, utilities, management, repairs, reserves). Mortgage payments are not an operating expense; NOI is calculated before financing.
Debt Service Coverage Ratio (DSCR) — NOI divided by annual mortgage payments. Most conventional Canadian commercial lenders want 1.20x to 1.30x, meaning the property must earn 20–30% more than the mortgage costs. CMHC-insured multi-family can go as low as 1.10x. A property that only breaks even at 1.00x will not be financed conventionally.
Loan-to-Value (LTV) — the loan divided by the appraised value. Typical conventional maximums are 75% on multi-family, 65–75% on industrial and retail, 65% on office, and 50–65% on special-purpose or hospitality property. Land is lower again, often 50% or less.
The binding constraint is whichever produces the smaller loan. On a low-cap-rate property in Vancouver or Toronto, DSCR usually caps the loan well before LTV does — which is why a strong-looking building in an expensive market often supports less debt than owners expect.
A Worked Example
A 12-unit apartment building in Kelowna is listed at $3,200,000.
At a 5.75% commercial rate on a 25-year amortization, each $1,000,000 borrowed costs roughly $75,000 per year in payments. To hit a 1.25x DSCR the property can support annual payments of $164,160 ÷ 1.25 = $131,328 — about $1,750,000 of debt.
That is 55% LTV, well under the 75% the lender would otherwise allow. In this case DSCR is the binding constraint, so the buyer needs roughly $1,450,000 down plus closing costs, not the 25% they may have budgeted. Running the numbers before writing an offer is the single most valuable thing a commercial buyer can do.
Rates, Terms and Amortization
Commercial rates are quoted as a spread over the Government of Canada bond of matching term, so they move with bond yields rather than with the Bank of Canada overnight rate. Expect commercial pricing to sit meaningfully above residential pricing on the same day — the gap reflects the property risk, not your credit.
Terms are typically 1 to 10 years, with 5 years the most common. Amortizations run 15 to 25 years on most asset classes, and up to 30–40 years on CMHC-insured multi-family. Many commercial loans are written with a balloon: the balance comes due at the end of the term and must be repaid or refinanced, so the exit plan matters as much as the entry.
CMHC-Insured Multi-Family Financing
For residential rental buildings of five units or more, CMHC mortgage loan insurance is often the single best-value option in Canada. It allows higher leverage (up to 85% LTV on standard rental, higher on affordable and MLI Select projects), amortizations up to 40 years, and interest rates materially below conventional commercial pricing because the lender's risk is insured.
The trade-offs are a CMHC premium added to the loan, an application fee per unit, and a longer approval timeline — commonly 60 to 120 days. On a building you intend to hold, the rate saving over a five-year term usually exceeds the premium several times over. On a short-hold or value-add play, the timeline and prepayment restrictions may not suit.
What Lenders Ask For
A complete commercial package moves far faster than a partial one. Expect to provide:
Environmental and building condition reports are the most common source of delay. On any industrial, automotive, dry-cleaning, or gas-station-adjacent site, order the Phase I early.
Costs Beyond the Down Payment
Commercial transactions carry costs that residential buyers rarely see:
Budget 2% to 4% of the purchase price for closing costs on a typical commercial deal, over and above the down payment.
Conventional, Alternative and Private Options
Not every good deal fits a bank. Chartered banks and credit unions offer the best pricing on stabilized, well-tenanted property with strong sponsors. Alternative and B lenders take on properties with vacancy, short lease terms, transitional cash flow, or borrowers whose tax-optimized statements understate real income. Private lenders fund on speed and story — bridge financing, land, construction takeout, and repositioning plays — at higher rates and shorter terms, with a defined exit.
Working through a network of lenders means the file goes first to the lender whose policies already fit the property, rather than being shopped bank by bank after a decline.
Property Types Financed
Frequently Asked Questions
What is the minimum down payment on a commercial mortgage in Canada?
Plan on 25% to 35% down on most conventional commercial mortgages. Maximum loan-to-value is roughly 75% on multi-family, 65% to 75% on industrial and retail, 65% on office, and 50% to 65% on special-purpose property. On lower-yielding properties the debt service coverage requirement often limits the loan below the LTV maximum, so the actual down payment can be higher.
What DSCR do commercial lenders require?
Most conventional Canadian commercial lenders require a debt service coverage ratio of 1.20x to 1.30x, meaning net operating income must exceed annual mortgage payments by 20% to 30%. CMHC-insured multi-family financing can go as low as 1.10x.
How is a commercial mortgage different from a residential mortgage?
A residential lender underwrites the borrower's personal income and credit. A commercial lender underwrites the property's net operating income first, then the borrower. Commercial mortgages also carry shorter terms, shorter amortizations, broker and lender fees, environmental and building condition reporting, and frequently a personal guarantee.
How long does commercial mortgage approval take?
A conventional commercial mortgage typically takes 30 to 60 days from complete application to funding. CMHC-insured multi-family commonly takes 60 to 120 days. Private and bridge financing can close in 1 to 3 weeks. Environmental and appraisal reports are the usual timeline drivers.
Are broker fees charged on commercial mortgages?
Yes. Unlike most residential mortgages, commercial financing normally carries a broker fee — typically 0.5% to 1.5% of the loan amount, payable on funding, and higher on smaller or more complex deals. The fee is disclosed in writing before you commit.
Can I get a commercial mortgage through a holding company?
Yes, and most commercial property is held in a corporation or limited partnership. Lenders will usually require personal guarantees from the principals, along with corporate financial statements and personal net worth statements.
What amortization is available on a commercial mortgage?
Most commercial mortgages amortize over 15 to 25 years. CMHC-insured multi-family can reach 40 years. Terms are usually 1 to 10 years with 5 years most common, and the balance is typically due at the end of the term.
Do I need an environmental report?
A Phase I environmental site assessment is standard on nearly all commercial financing. If the Phase I identifies a potential concern — common on industrial, automotive, or former gas station sites — the lender will require a Phase II before funding.
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