Multiplex Investing
in Toronto

A multiplex is a residential property containing two to four self-contained dwelling units under one roof. In Toronto, they range from century-old semis divided into two flats decades ago to purpose-built fourplexes in established inner-city neighbourhoods. Each unit has its own entrance, kitchen, and living space. One owner holds the entire property on a single title.

The appeal is straightforward: one purchase, one property to insure and maintain, multiple streams of rental income. For investors who live in one of the units, that rental income can offset a significant portion of the monthly mortgage. For pure investors, two or three rent-generating units under one roof simplify management compared to owning properties scattered across different addresses.

At five or more units, a property moves into commercial and specialty financing territory, including CMHC programs such as MLI Select, which have different eligibility rules and financing structures. Everything in this guide applies specifically to the two-to-four unit residential range.

How you finance a multiplex in Toronto depends almost entirely on one question: are you going to live in one of the units? The answer changes your down payment requirements, your access to CMHC mortgage insurance, and how lenders treat your rental income.

If you plan to owner-occupy, CMHC insured financing is available for 2-4 unit properties. A duplex requires as little as 5% down, subject to current insured mortgage rules and purchase price limits. A triplex or fourplex requires a minimum of 10% down. The purchase price must be under $1.5 million to qualify for insured financing. Rental income from the non-owner-occupied units can typically be included in your mortgage qualification, increasing your effective borrowing capacity.

If you're buying as a pure investor without occupying any unit, CMHC insurance is not available. You'll need a minimum 20% down payment and conventional financing. Lenders will still consider rental income for qualification purposes, but policies on how much of it counts vary. A mortgage broker with multi-unit experience is worth engaging early in your search. Use the mortgage calculators for a starting estimate, then get a qualified number from a broker.

House hacking means buying a multi-unit property, occupying one unit as your primary residence, and renting the others to offset your mortgage costs. In Toronto, where the gap between what ownership costs and what renting costs has narrowed significantly, it's one of the most financially effective strategies available to buyers who want to own rather than rent.

In the scenario above, an owner-occupying one unit of a $1.2 million triplex carries a net monthly cost of around $2,050. In many inner-city Toronto neighbourhoods, that's less than the monthly rent for a comparable two-bedroom unit. And unlike renting, the owner is building equity, reducing their mortgage balance every month, and benefiting from any capital appreciation in the property's value.

Ontario's Residential Tenancies Act applies to your tenants whether you live in the building or not. Rent increase guidelines, notice requirements, unit entry rules, and eviction procedures are the same for an on-site landlord as for an absentee one. Understanding the RTA before you buy is part of the due diligence process, not an afterthought.

Multiplexes require more thorough due diligence than a standard single-family home. The most important question is whether each unit is legally permitted. In Toronto, legality depends on more than zoning alone: you need to verify building permits, occupancy status where applicable, and whether any outstanding work orders exist. A property listed as a triplex might legally only be permitted as a duplex, which affects your ability to rent it as marketed and creates liability if a tenant is harmed in a non-compliant unit.

Toronto has a large stock of homes with converted suites that were never properly permitted. The conversion might look professional and be genuinely livable, but without permits the legality is unclear and a lender may refuse to finance against it. Verify permit status independently, not just from what the listing claims.

Toronto's multiplex inventory is concentrated in older inner-city neighbourhoods where large detached and semi-detached homes were converted over decades of population growth. These areas tend to offer the deepest selection of legally permitted duplexes and triplexes, strong rental demand, and the transit access that tenants increasingly prioritize.

Entry price varies significantly by area, so the right neighbourhood depends on your budget, whether you plan to owner-occupy, and the tenant profile you're targeting. Below are the neighbourhoods with the most active multiplex markets in Toronto.