Last updated: August 2026 · Written by Deep Singh, REALTOR® — Waterloo Region
Buying commercial property works nothing like buying a house. Value comes from income rather than comparable sales, financing is underwritten against the asset and the tenants, and the due diligence period is where deals are won or lost. Deep Singh guides business owners and investors through commercial acquisitions across Waterloo Region and the GTA.
Residential property is valued by comparing it to similar homes that recently sold. Commercial property is valued on the income it produces. Two numbers drive everything.
A building generates $240,000 in gross rent. Operating expenses and a vacancy allowance total $90,000, so NOI is $150,000. If comparable assets in that submarket trade at a 5.5% cap rate, the indicated value is $150,000 ÷ 0.055 = roughly $2,727,000. Raise NOI by $15,000 through a rent increase or an expense reduction and, at the same cap rate, you’ve added about $273,000 in value. This is why operational improvements matter so much more in commercial than in residential.
| Purchase Type | Typical Down Payment | Notes |
|---|---|---|
| Multi-family, 5+ units (CMHC-insured) | 15% or less | Longest amortizations and lowest rates available in commercial |
| Owner-occupied, CSBFP-eligible | 10–25% | Canada Small Business Financing Program supports qualifying purchases |
| Industrial / retail investment | 25–35% | Depends heavily on tenant covenant and remaining lease term |
| Vacant or single-tenant special-use | 35%+ | Higher perceived risk; some lenders decline entirely |
Commercial mortgages typically amortize over 15 to 25 years with a shorter term of five years, and lenders assess the debt service coverage ratio — NOI divided by annual mortgage payments. Most want to see at least 1.20 to 1.25, meaning the property generates 20 to 25% more income than it needs to cover debt. Get pre-qualified before you make offers; commercial financing takes longer than residential and shapes what you can realistically bid.
Two things kill commercial purchases more than anything else: financing and environmental. Talk to your bank before you write the offer, not after. Lenders differ on which asset classes they will touch and how much they will advance against each, and you need to know both before you commit to a price. On environmental, insist on at least a Phase I. Banks treat any environmental flag as a serious problem, and if contamination surfaces after closing, remediation can run into hundreds of thousands of dollars — and it is yours, because the liability transfers with ownership.
Most commercial purchases require 25% to 35% down. There are two important exceptions. Multi-family buildings of five or more units can qualify for CMHC-insured financing, sometimes at 15% down or less. Owner-occupied premises may qualify under the Canada Small Business Financing Program with lower requirements. Vacant buildings and special-use properties sit at the higher end because lenders view them as riskier.
NOI stands for net operating income — the annual income a property produces after all operating expenses but before mortgage payments and income tax. Calculate it by taking gross rental income, subtracting a vacancy allowance, then subtracting property taxes, insurance, maintenance, management fees, and any landlord-paid utilities. NOI is the foundation of commercial valuation because dividing it by the market cap rate produces the property’s value.
Plan for four to six months from starting your search to closing. Finding the right property typically takes one to three months, the conditional due diligence period runs 30 to 60 days, and closing follows another 30 to 90 days after conditions are waived. Environmental issues, zoning complications, or financing delays can extend this. It is a substantially longer process than a residential purchase.
At minimum: a Phase I environmental site assessment, a building condition assessment, verification of zoning and permitted use with the municipality, a full review of every lease rather than summaries, two to three years of actual operating statements, a certified rent roll, estoppel certificates confirming tenants agree to the lease terms as stated, and a title search. For industrial and former automotive or dry-cleaning sites, environmental review is especially critical — contamination liability transfers with ownership.
Generally yes — commercial real estate transactions in Ontario are subject to 13% HST, unlike most resale residential purchases. However, HST-registered buyers can usually self-assess and claim an input tax credit, so the practical cash cost is often neutral. The mechanics need to be handled correctly in the agreement and by your accountant and lawyer, so raise it early rather than at closing.
Commercial commissions are negotiable and vary by deal size and complexity, generally falling in the 2% to 6% range on sales and paid by the seller. Larger transactions carry lower percentages. On leases, commission is typically calculated as a percentage of total lease value over the term and paid by the landlord. Buyers and tenants usually pay nothing directly. All commission arrangements are agreed in writing before work begins.
Bring Deep a property you’re considering and he’ll run the numbers with you — NOI, cap rate, debt service, and what the due diligence should cover. No obligation.
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