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Is Your Toronto Lot Eligible for a Multiplex?

Start with the one split that decides everything: a fourplex is permitted everywhere in a residential Neighbourhoods zone, while a sixplex is permitted in only nine wards (plus a ward that has opted in). Since the May 2023 multiplex by-law, up to four units are as-of-right citywide. Work the checklist below to see where your lot lands.

Key Takeaways

✓Fourplex is city-wide — up to four units as-of-right in any residential Neighbourhoods zone (RD, RS, RT, RM).
✓Sixplex is nine wards only (plus opt-in) — five or six units is not permitted city-wide.
✓A lot abutting a public lane can add a laneway suite; a lot without a lane, a garden suite.
✓A design inside the as-of-right envelope goes to a building permit; exceeding it needs a Committee of Adjustment variance.
✓Heritage status does not disqualify a lot, but it adds review — confirm it before designing.

The Eligibility Checklist

Answer in order. Question one is the hard gate. Questions two and three set your unit ceiling — and this is where the fourplex-everywhere versus sixplex-by-ward split decides what you can build.

Is the lot in a residential Neighbourhoods zone (RD, RS, RT, or RM)?

If Yes

Gate one is open. The multiplex permissions attach to residential zones on lands the Official Plan designates Neighbourhoods — that covers most of the city's residential lots.

If No

A different zone or designation runs on its own rules. The 2023 multiplex by-law applies to residential Neighbourhoods-designated lands, not to commercial, apartment, or employment zones.

How many units do you want — up to four, or five to six?

If Yes

Up to four units is permitted as-of-right anywhere in a residential Neighbourhoods zone. That is the city-wide ceiling, and it does not depend on your ward.

If No

Five or six units changes the question. A sixplex is permitted as-of-right only in nine wards (plus a ward that has opted in). On four units or fewer, you skip the ward question entirely.

Which ward is the lot in?

If Yes

If it is one of the nine sixplex wards — eight in the Toronto and East York district plus Ward 23, Scarborough North, as a pilot — up to six units are permitted as-of-right.

If No

Outside the nine wards, the as-of-right ceiling is four units unless your local councillor has opted the ward in. The fourplex permission is unaffected — only the five-to-six band depends on the ward.

Does the lot abut a public laneway?

If Yes

A lot that backs onto a public lane can add a laneway suite as a separate ancillary building, permitted city-wide since 2019. That is on top of the multiplex inside the main house.

If No

No lane does not mean no extra unit. A garden suite — a detached rear-yard home, permitted city-wide since 2022 — is the no-laneway equivalent. Etobicoke has a 30 m minimum-lot-depth nuance.

Does the design fit the as-of-right envelope (height, lot coverage, setbacks)?

If Yes

A compliant design goes straight to a building permit — no rezoning, no Official Plan amendment, no public meeting.

If No

A design that exceeds height, lot coverage, or setbacks needs a minor variance from the Committee of Adjustment first. That is not a rezoning, but it adds time to plan for.

Is the property in a Heritage Conservation District or listed?

If Yes

Heritage designation or a conservation district can add review and constrain demolition and form. Toronto's older neighbourhoods are full of these — confirm status before you design.

If No

No heritage overlay to manage — but still confirm, because many character homes in Old Toronto and East York are listed or sit inside a conservation district.

The Nine Sixplex Wards

This is the part owners get wrong. A fourplex needs no ward check. A sixplex does — five or six units is permitted as-of-right only in these nine wards (Sixplexes Citywide Study). Anywhere else, the ceiling is four unless the local councillor has opted the ward in.

Ward	Name	District
Ward 4	Parkdale–High Park	Toronto & East York
Ward 9	Davenport	Toronto & East York
Ward 10	Spadina–Fort York	Toronto & East York
Ward 11	University–Rosedale	Toronto & East York
Ward 12	Toronto–St. Paul's	Toronto & East York
Ward 13	Toronto Centre	Toronto & East York
Ward 14	Toronto–Danforth	Toronto & East York
Ward 19	Beaches–East York	Toronto & East York
Ward 23	Scarborough North (pilot)	Scarborough

Permitted as-of-right under OPA 818 / By-law 654-2025, adopted June 2025. Confirm against the Sixplexes Citywide Study.

The Four Forks That Decide Form

Once gate one is open, four either/or questions shape what you can actually build.

Fourplex — everywhere

Up to four units is permitted as-of-right in every residential Neighbourhoods zone across Toronto, adopted by Council on May 10, 2023 (Law 0473 / Law 0474). Four units fit roughly the same envelope as a detached house. This permission does not depend on your ward.

Sixplex — nine wards only

Five or six units is permitted as-of-right only in nine wards, under OPA 818 and By-law 654-2025, adopted June 2025. A sixplex reaches up to four storeys in a detached residential building. Outside the nine wards, a councillor can opt the ward in — but until they do, the ceiling stays at four.

Laneway vs garden suite

The split is the lane. A lot abutting a public laneway can take a laneway suite (permitted since 2019). A lot without a lane takes a garden suite (permitted since 2022) — a detached rear-yard home. Both are separate ancillary buildings that can stack with the multiplex in the main house.

As-of-right vs variance

A design inside the height overlay (often 10 m), the lot-coverage rules, and the zone setbacks is a building-permit project. A design that exceeds any of them needs a Committee of Adjustment minor variance. Heritage status is the other thing that can pull a project into added review.

Where to Check Each One

1

City of Toronto — Multiplex Study and building guidance

The City's own pages on the 2-to-4-unit multiplex permissions and the considerations when building one — what the by-law allows, the envelope it works in, and the building-permit path. Start here.
Multiplex Study (2-4 units) →
2

Sixplexes Citywide Study — the nine-ward list

Where the sixplex permission applies, ward by ward, and how the opt-in works for the rest. Confirm your ward against this page before assuming a fifth or sixth unit.
Sixplexes Citywide Study →
3

Neighbourhood Profiles — find your ward and area

Toronto has 25 wards and 158 Neighbourhood Profiles. Use them to confirm which ward and neighbourhood a parcel sits in before checking the sixplex list or planning a laneway suite.
Neighbourhood Profiles →
4

Considerations When Building Multiplexes — the envelope

Height overlays, lot coverage, setbacks, and the FSI rule that does not apply to multiplexes. Use it to confirm whether your design is as-of-right or needs a variance before you spend on drawings.
Considerations When Building Multiplexes →

New to the process? Start with how it works, then read the policy behind it on the multiplex by-law page.

Best For

✓ Residential Neighbourhoods lots (RD, RS, RT, RM) where a fourplex fits the as-of-right envelope — almost every residential lot in the city.
✓ Lots in one of the nine sixplex wards aiming for five or six units.
✓ Lots that abut a public lane (laneway suite) or have a usable rear yard (garden suite) to stack an extra unit.

Usually Fails When

✕ A sixplex is assumed on a lot outside the nine wards, and the ward has not opted in.
✕ The design exceeds height, lot coverage, or setbacks and the Committee of Adjustment variance timeline was not planned.
✕ A Heritage Conservation District or listed status adds review that was never scoped.

What To Verify Before Spending Money

→ The residential zone and Neighbourhoods designation for the parcel.
→ Which of the 25 wards the lot is in, and whether it is one of the nine sixplex wards.
→ Whether the lot abuts a lane, whether the design fits the envelope, and any heritage status.

Frequently Asked Questions

Is almost every Toronto lot eligible for a fourplex? +

Effectively yes. Since the May 2023 multiplex by-law, up to four units are permitted as-of-right in residential Neighbourhoods zones (RD, RS, RT, RM), which covers most of Toronto's residential lots. The permission does not depend on your ward. What varies by lot is the design fit, heritage status, and whether you want to go above four units (City of Toronto — Multiplex Study).

Can I build a sixplex on my lot? +

Only if the lot is in one of the nine sixplex wards, or in a ward whose councillor has opted in. As of June 2025, up to six units are permitted as-of-right in eight Toronto and East York wards plus Ward 23 (Scarborough North) as a pilot, under OPA 818 and By-law 654-2025. Outside those wards, the as-of-right ceiling is four units. Sixplexes are not legal city-wide.

What is the difference between a laneway suite and a garden suite? +

The lane. A laneway suite sits on a lot that abuts a public laneway (permitted city-wide since 2019). A garden suite is a detached rear-yard home on a lot without a lane (permitted city-wide since 2022). Both are separate ancillary buildings that can stack with the multiplex in the main house. Etobicoke has a 30 m minimum-lot-depth nuance for garden suites.

Does my design need a Committee of Adjustment variance? +

Only if it exceeds the as-of-right envelope — height (often capped at 10 m by the overlay), lot coverage, or the zone setbacks. A design that stays inside all three goes straight to a building permit. One that exceeds any of them needs a minor variance first. That is not a rezoning, but it adds time.

Does heritage status block a multiplex? +

No. Eligibility is driven by the residential zone and Neighbourhoods designation, not heritage status. But a Heritage Conservation District or a listed property can add review and constrain demolition and form. Many homes in Old Toronto and East York are listed — confirm status before designing.

Where do I verify the zone, ward, and sixplex status for an address? +

Start with the City's Multiplex Study page for the zone and envelope, the Sixplexes Citywide Study for the nine-ward list, and the Neighbourhood Profiles to confirm which ward a parcel is in. For anything non-obvious, confirm with City Planning before you commit money.