Mortgage for a Multi-Unit or Multiplex Property in Canada (2026)

Multi-unit properties — duplexes, triplexes, fourplexes, and apartment buildings — are one of the most reliable ways to build wealth, because the tenants help pay the mortgage. But financing them depends heavily on the unit count and whether you'll live in one. Here's how it works in Canada in 2026.

The short answer

Properties with 2–4 units are financed under residential rules, and if you live in one unit you can often buy with a low down payment (insured), with rental income from the other units helping you qualify. Properties with 5+ units are treated as commercial/multi-family and need commercial financing with larger down payments. See multi-family mortgage options.

2 to 4 units — residential rules

This is the sweet spot for new investors. Small multi-unit buildings (up to four units) qualify under residential lending:

• Owner-occupied (you live in one unit): low down payments are possible through insured programs, and the other units' rent helps you qualify. Recent CMHC multiplex support has improved options here — see CMHC multiplex financing.
• Non-owner-occupied (pure rental): expect at least 20% down, like any rental property.

5+ units — commercial / multi-family

Once a building has five or more units, it's commercial multi-family. Financing shifts to:

• Larger down payments (commonly 20–35%, depending on the deal and whether it's CMHC-insured multi-family).
• Property-driven underwriting — the building's net operating income and debt-coverage ratio matter as much as your personal income.
• Commercial terms — see how commercial mortgages work.

CMHC's multi-family insurance programs can offer attractive rates and higher leverage for qualifying purpose-built rentals.

How rental income is counted

For multi-unit properties, the building's rent does a lot of the qualifying work. On 2–4 units, lenders apply a rental offset or add a percentage of rent to your income. On 5+ units, the building's net operating income drives a debt-coverage calculation. Either way, strong, verifiable rents are key — model the property with the rental cashflow calculator.

Why investors love owner-occupied multiplexes

Buying a 2–4 unit building, living in one unit, and renting the rest ("house hacking") combines a low owner-occupied down payment with rental income that offsets your housing cost — often the most capital-efficient first move in real estate. As you grow, you can refinance equity out to fund the next purchase (see cash-out refinance) and graduate to larger buildings.

Frequently asked questions

How many units can I finance with a residential mortgage?

Up to four units fall under residential lending. Five or more units are commercial multi-family and require commercial financing.

Can I buy a multiplex with a low down payment?

Yes, if it's 2–4 units and you'll live in one — insured owner-occupied programs allow lower down payments, with the other units' rent helping you qualify. Pure rentals need at least 20%.

How much down payment for a 5+ unit building?

Commonly 20–35%, depending on the deal and whether it's CMHC-insured multi-family. The building's income and debt-coverage ratio heavily influence approval.

Does rental income from the units help me qualify?

Yes. On small multiplexes lenders count a portion of the rent; on larger buildings the net operating income drives the financing. Verifiable rents make qualifying easier.

Eyeing a multiplex? Talk to us — we'll structure the right financing whether it's a duplex you'll live in or a 12-unit building. See multi-family options.