Fourplex Financing in Toronto: What Changes on February 1, 2027.

When we sat down with the owners of a bungalow in Yorkdale–Glen Park this year, we talked about two kinds of buyers. The first was the one everyone expects: someone looking for a house to live in. The second was a builder, who would look at the same lot and see room for four homes instead of one.

We’ve been paying more attention to that second buyer lately. In a slower market, a lot that appeals to more than one kind of buyer gives a seller more options (and a little more leverage). Toronto has allowed fourplexes on most residential lots since 2023, so the zoning hasn’t been the hard part for builders… it’s finding the money to build it.

Thankfully, that’s the exact piece the 2026 Budget changes. Here’s what’s new, when it starts and what it could mean if you own a detached house in Toronto.

For everything else in the budget, see our overview, What Budget 2026 Means for Toronto Real Estate.

What Ottawa Changed (Short Answer: The Financing)

On November 5, the Department of Finance published the rules for a new insured mortgage for newly built triplexes and fourplexes. Lenders can start submitting applications under them on February 1, 2027.

The insured loan can cover up to 90% of what the property will be worth once it’s built. It can be used to build a new three- or four-unit home, or to buy one that’s newly built. There’s no maximum property value, no requirement that the owner live in one of the units, and the mortgage can be paid off over up to 30 years.

Today, a typical Toronto fourplex doesn’t fit the insured mortgage rules at all. The Budget 2026 document uses a $3 million fourplex as its example: it’s over the current $1.5 million limit, and the owner would have to live in one of the units. Under the new rules, a builder could borrow up to $2.7 million on that same project, putting in $300,000 of their own money.

Borrowers still have to qualify. Once the building is finished, the mortgage has to pass the stress test, stay within a gross debt service ratio of 39% and a total debt service ratio of 44%, and at least one borrower or guarantor needs a credit score of 600 or more. During construction, each insurer sets its own criteria, and the cost of the insurance hasn’t been published yet.

Why It Matters More in Toronto

Toronto has already done most of its part. Since 2023, the City has allowed a duplex, triplex or fourplex on most residential lots without a rezoning. According to Mayor Chow’s May 2026 letter, the City also waives development charges and park levies for up to six units, plus a garden or laneway suite, on a single lot.

What hasn’t kept up is the financing. RENX Homes reported on a homeowner building a fourplex on their own lot, a project that could cost about $2 million and doesn’t fit neatly into the loans lenders usually offer. That gap has kept plenty of these projects on paper.

With up to 90% insured financing behind them, more small builders could start to make the numbers work. That’s the change worth watching if you own a detached house.

What Does This Mean If You’re Selling a House?

For a seller, it means one more group of buyers who may want your lot. When we prepare a detached house for sale, we look at it the way someone who wants to live there would, and the way a builder would. If the lot works for a fourplex, we say so in the marketing and make sure builders see it.

That matters more when the market is slower, as it has been this fall (see our October market update). It doesn’t mean every house should be sold as a teardown. Plenty of buyers still want the house as it stands, and the builder angle sits alongside that. It’s one of the things we weigh when we work out how a property is valued.

The Lots Builders Look For

Builders start with the lot rather than the house. A detached house on a wide, deep lot gives them room for four units (or more), and laneway access or a generous rear yard may leave room for a garden suite as well. A bungalow that needs work can be the easiest sell of all, since no one is paying for finishes they’ll take out.

Every lot is different, though. The City’s multiplex housing page explains what’s allowed and where, and we check the zoning on the specific property before we market it this way.

Fourplex or Sixplex? Where Your Lot Sits Matters

In Yorkdale–Glen Park, which is part of North York, the most a builder can put on a lot without extra approvals is four units. That’s exactly the size the new federal financing is built for, which could make lots there more interesting to small builders. You can follow how the area is doing on our Yorkdale–Glen Park house prices page.

Closer to the core, the rules go further. Since June 2025, fiveplexes and sixplexes have been allowed in the eight wards of the Toronto and East York district and Ward 23 in Scarborough. That includes neighbourhoods we work in every day, like Wychwood, the Annex and Oakwood-Vaughan.

A five- or six-unit building falls under separate insurance rules. New construction can still be financed up to 90%, but the borrower needs a net worth of at least 25% of the loan, and no less than $100,000. In other words, the new rules open a fourplex lot to more builders, while a sixplex lot is still more likely to draw experienced ones.

The Situations We Get Asked About

Does Converting an Existing House Count?

Maybe. The rules refer to building a new three- or four-unit home, or buying one that’s newly built. Whether a major conversion of an existing house qualifies isn’t clear yet, so ask a lender before you count on it.

Can I Build a Fourplex and Live in One of the Units?

Yes. The new rules drop the requirement to live there; they don’t stop you from doing it. According to the budget, an owner can live in one unit and rent the rest, rent all four or sell the units individually.

Can I Use This to Buy a Fourplex?

Only a newly built one. The rules cover buying a newly completed three- or four-unit home, on the same 90% and 30-year terms. An older fourplex down the street doesn’t qualify.

Will This Push Up Lot Prices?

It’s too early to say. More builders able to finance a project could mean more interest in the right lots. Construction costs, rents and the cost of the insurance will still decide what a builder can pay.

What’s Next?

February 1 is the start date, but the details builders care about most, like each insurer’s criteria and the cost of the insurance, are still to come. We’ll update this post as they’re published (things can change before then).

Will cheaper financing bring more small builders to the table when lots come up this spring? It’s a trend to watch, and we’ll share what we see in the neighbourhoods we work in.

Thinking of selling a detached house in the next few months? Get a free estimate of your home’s value, and we’ll also tell you what your lot could mean to a builder.