Multiplex Development in Toronto: Fourplexes, Sixplexes & What’s Allowed
A fourplex is now as-of-right across Toronto — no rezoning, no parking required. A sixplex is only allowed in some districts. What you can build, convert, and where the rules split.
Toronto now permits up to four units — a fourplex — as-of-right on residential lots city-wide, with no rezoning and no parking required. Six units are as-of-right only in some districts. You can create the units by converting an existing house or building new.
HouseLyft helps homeowners in Toronto work out how many units their lot supports, what a conversion or build costs, what it should earn, and which approvals apply — then connects them with a vetted builder.
For most of Toronto’s history, turning a house into three or four units meant a rezoning battle. As of May 10, 2023, it doesn’t: a fourplex is as-of-right across the entire city. That single change is what makes multiplex development a realistic project for an ordinary homeowner rather than a developer-only play.
What you can build without rezoning
On a typical Toronto residential lot, up to four units are permitted as-of-right — no rezoning, no Official Plan amendment, no public meeting. You can reach four by:
Because there’s no planning approval for four units, the constraint is physical and financial — the building envelope, the structure, the servicing — not political. That’s a very different project from one that needs a hearing.
4Units as-of-right, city-wide
NoneParking required
Both allowedConversion or new build
The line most competitors get wrong: four vs six
Here’s the distinction that trips up a lot of online guidance. Four units are city-wide. Six are not. A sixplex is as-of-right only in the Toronto & East York district and Ward 23 (Scarborough North), adopted June 25–26, 2025, with a city-wide sixplex study still underway. A homeowner in Etobicoke and one in Riverdale genuinely do not have the same rights — one can build six as-of-right, the other would need an application for a fifth or sixth unit. Any page telling you “Toronto allows sixplexes” without that geographic caveat is overstating it. Checking your ward is the first step in scoping a five- or six-unit project.
No parking required
Toronto removed minimum parking requirements city-wide on February 3, 2022, so a multiplex needs no on-site parking stalls by right. On a narrow or deep lot, that removes what used to be the single hardest constraint on fitting more units — and it’s often the difference between a four-unit conversion that works and one that doesn’t.
What you won’t pay: development charges
Development charges — normally a major line on any new unit — are $0 on the 2nd through 6th units of a project up to six units on one parcel, under the City’s development-charge rules effective July 24, 2025 (a second and third unit are also exempt by provincial statute). That’s not a grant and no cheque changes hands; it’s a charge that simply isn’t levied, and it materially improves the math on a conversion.
What we do — and what we don’t
HouseLyft establishes whether a multiplex stands up before anyone spends money on drawings: how many units your lot actually supports, whether a conversion or a new build makes more sense, what it costs, and what it should earn. Where it works, we hand you to a vetted builder and stay involved. Where it doesn’t, we say so.
We are not a lender and we do not sell mortgages.
One correction worth carrying, because it is still advertised widely: the federal $80,000 Secondary Suite Loan was cancelled in Budget 2025 and never launched. Our financing guide sets out what is actually live.
Serving Toronto and the surrounding region
We work across Toronto and the wider GTA, including Mississauga and Oshawa, and across the country in Vancouver — where the unit counts and rules differ materially from Toronto’s. The full list is on our service areas page.
We also handle secondary suites and planning and permits in Toronto.
Common questions about Toronto multiplexes
Yes. Up to four units are as-of-right on residential lots city-wide, since May 10, 2023 — no rezoning, no Official Plan amendment, no public meeting.
Only in the Toronto & East York district and Ward 23. Everywhere else, four units are as-of-right and a fifth or sixth requires a planning application.
No. Toronto removed minimum parking requirements city-wide in February 2022, so a multiplex requires no on-site parking stalls.
Yes — converting a house into up to four units is the most common multiplex path, and it’s as-of-right. The constraints are structural and financial, not planning.
No. Development charges are $0 on the 2nd through 6th units, which meaningfully improves the economics of a conversion.
How this page was checked
Verified 20 July 2026, claim by claim — every figure above traced to the instrument it comes from.
Municipal rules change — confirm your lot’s specific permissions with the City of Toronto before committing to a project.
Find out how many units your Toronto lot supports
Enter your address and we’ll come back with what your property permits, whether a conversion or new build fits, what it would cost, and what it should earn.
- What your lot allows
- What it should earn
- Which programmes apply
Illustrative — your report is built from your own address.