(905) 441 0770 allen@allenehlert.com

How Do Commercial Mortgages Work?

by | December 11, 2025

… A Beginner’s Guide for Business Owners and Real Estate Investors

If you’ve ever looked at a strip plaza, an apartment building, or even a self-storage facility and thought, “I wonder how people afford to buy those?” — the answer is almost always the same: a commercial mortgage.

Now, commercial mortgages sound big, scary, and complicated to a lot of people, especially if you’ve only dealt with residential financing before. But truthfully? Once you understand how they work, you’ll realize it’s just another tool — one with a few extra moving parts and a little more paperwork.

Whether you’re a business owner dreaming of owning your own space, or an investor looking to level up your real estate game, knowing how these mortgages work is the first step to playing in the big leagues.

What I’m Going to Cover:

What Makes a Mortgage ‘Commercial’

How Commercial Mortgages Actually Work

What Lenders Look For in Commercial Deals

How Commercial Mortgages Differ From Residential Mortgages

Real-World Examples You Can Apply Today

What Makes a Mortgage ‘Commercial’

Simply put, a commercial mortgage is financing for property used to run a business or generate income — not a home where someone lives. The building could be retail, office, industrial, multi-family (5+ units), or even a mix. If the main goal is profit, you’re in commercial territory.

But it’s not just the building that matters. It’s also about the purpose. You could buy a six-plex rental building, a storefront with apartments above, or a warehouse for your own business. All of those would require a commercial mortgage because they’re tied to revenue, not your personal living situation.

How Commercial Mortgages Actually Work

A commercial mortgage works the same way as a home mortgage in theory: you borrow money, pledge the property as security, and repay it over time with interest. But the similarities kind of end there.

The Key Differences?

  • Lenders focus on the property’s income. They care about the rent it brings in, the leases in place, and whether it can comfortably cover the mortgage payments.
  • You’ll need a larger down payment. Usually 25% or more. Lenders want to see you’ve got skin in the game.
  • Rates are higher. Risk and complexity come at a price.
  • Terms are shorter. Think 5-10 years on the term, with a 20-25 year amortization.

Oh — and expect a longer approval process. Commercial lenders are thorough. They’ll look at environmental reports, appraisals, business plans, and detailed financials before saying yes.

What Lenders Look For in Commercial Deals

This is where people often get tripped up. With residential mortgages, lenders mostly want to know: “Can YOU afford this?”

With commercial? The question shifts to: “Can THIS PROPERTY support this loan?”

Here’s what they scrutinize:

  • Net Operating Income (NOI): Income minus expenses (excluding debt payments).
  • Debt Service Coverage Ratio (DSCR): Does the income more than cover the loan payments? A DSCR of 1.20+ is typical.
  • Lease Quality: Are your tenants reliable? Long-term? Paying market rent?
  • Location and Market Conditions: Is this property in demand, or in a dying plaza nobody wants?

Sure, your personal finances still matter — especially for smaller deals — but the strength of the property is front and center.

How Commercial Mortgages Differ From Residential Mortgages

Let’s lay it out plain:

Residential MortgageCommercial Mortgage
Based on your incomeBased on property income
5%-20% down payment25%-35% down payment
Lower interest ratesHigher interest rates
Up to 30-35 year amortizationTypically 20-25 year amortization
Simpler approval processIn-depth review and documentation
CMHC insurance availableCMHC rarely involved (except rentals)

The stakes are higher with commercial, but so are the potential returns. You’re building wealth through income-generating assets, not just through homeownership.

Real-World Examples You Can Apply Today

Example 1: Business Owner

Let’s say you’re running a successful HVAC company out of leased industrial space. You’re tired of paying someone else’s mortgage. You find a small industrial unit for sale. This isn’t just about securing space — it’s about building equity in your business’s future. You’ll need a commercial mortgage because this is tied to your company’s operations.

Example 2: Real Estate Investor

You’ve done well with a couple of duplexes and triplexes. Now you’re eyeing a 10-unit apartment building. Once you hit 5+ units, lenders move you into the commercial category. The building’s rent rolls, vacancy rates, and expenses will dictate how much you can borrow — not your personal income anymore.

Example 3: Entrepreneur

You’re opening a retail store and want to buy your own storefront. Lenders will assess your business viability, your lease (even to yourself), and the market strength. Again — commercial mortgage all day long.

Allen’s Final Thoughts

Here’s the golden nugget to walk away with: Commercial mortgages aren’t just about buildings — they’re about business. Whether it’s rental income or operational space, lenders want to know how this property is going to generate cash and hold its value.

Yes, the process is more involved. Yes, the rates and down payments are bigger. But with bigger risk comes bigger opportunity. Owning commercial real estate can build wealth in ways residential property can’t.

That’s why having someone in your corner who gets it makes all the difference.

How I Can Help

As your mortgage agent, I don’t just toss your file at a bank and hope for the best. I help you:

  • Understand the commercial lending landscape.
  • Position your deal in a way lenders respect and understand.
  • Navigate the paperwork without pulling your hair out.
  • Find the right lenders for your project — not just whoever’s cheapest.
  • Think big picture, so today’s financing supports tomorrow’s goals.

Whether you’re a business owner tired of renting or an investor ready to scale up, I’m here to help you map it out, structure it properly, and get it done right.

When you’re ready to talk commercial real estate, I’m just a conversation away. Let’s build something big together.

Mortgage and Money Radio Logo
Allen Ehlert

Allen Ehlert

Allen Ehlert is a licensed mortgage agent. He has four university degrees, including two Masters degrees, and specializes in real estate finance, development, and investing. Allen Ehlert has decades of independent consulting experience for companies and governments, including the Ontario Real Estate Association, Deloitte, City of Toronto, Enbridge, and the Ministry of Finance.

Joint Tenancy

Get Down Payment Help Through Ourboro

Unlock your homeownership dreams in Canada with Ourboro’s tailored down payment assistance and resources. Start your journey today.

Canadian Real Estate Wealth

Real Estate Makes Canadians Wealthy

Unlock the secret to wealth in Canada; learn how your household net worth is bolstered by smart real estate investments.

Wealth Gap

Canadian Wealth Gap Widens

Explore the expanding wealth gap in Canada and its impact on economic disparity, home ownership and social equality. Understand today’s financial divide.

Deducting Interest

Deducting Interest Paid on Investment Income

Explore how deducting interest on your investment income can optimize your taxes in Canada. Learn tips for claiming interest deductions effectively.

Guide to Assumable Mortgages

A Guide to Assumable Mortgages

Discover how assumable mortgages can offer a cost-effective path to homeownership. Learn the benefits and process in our comprehensive guide.

Title Insurance Protection

Title Insurance – Protect Your Home

Safeguard your home investment with Title Insurance, offering security against unforeseen property title issues and peace of mind.

Using Credit Cards to Build Wealth

Using Your Credit Card to Build Wealth

Leverage your credit card to build wealth through rewards programs, cash back, and strategic use of available credit. Maximize returns while managing debt responsibly.

Mortgage Default Insurance

Required Mortgage Default Insurance

Discover why mortgage default insurance is required for high-ratio mortgages in Canada and how it protects your investment and lender from potential losses.

Quick Small Equity-Based Loans

…  A Strategic Look at LendHub’s Quick Equity-Based Loans As an accountant or financial planner, you don’t get paid to react — you get paid to anticipate. You structure tax strategies, preserve capital, manage risk, and protect long-term wealth. But every now and...
Mortgage Document Equivalent

Mortgage Documents: American Equivalent

The following is an explanation of the Canadian equivalent Americans may provide to support their mortgage application, and how these documents map to Canadian income documents. If you are an American looking to acquire a mortgage in Canada, be prepared to provide these documents.