City of Toronto Zoning Bylaws: Permitted Uses and Multiplex Rules

Toronto’s zoning bylaws, consolidated in Zoning By-law 569-2013, control what you can build on any lot in the city, how large it can be, where it must sit on the property, and what activities are allowed inside. The bylaw was enacted on May 9, 2013 to replace the patchwork of rules inherited from Toronto’s former municipalities with a single citywide code.¹ It governs building height, lot coverage, setbacks, parking, and permitted uses across every zoning district. Before you renovate, buy, or start a home-based business, the rules attached to your specific lot are the starting point.

How to Look Up the Rules for Your Property

The fastest route is the City of Toronto’s Interactive Zoning Map. Enter an address and the map returns a zoning label that looks something like RD (f15.0; a550)(x5).² The opening letters identify the zone category, the numbers in parentheses relate to lot dimensions and density limits, and an “x” followed by a number points to a site-specific exception that modifies the general rules for that particular lot.

Site-specific exceptions matter. They reflect past Council decisions that override the standard provisions, and missing one is among the most common mistakes property owners make. Click the exception number on the map to read the exact modifications that apply.

When Former Municipal Bylaws Still Apply

By-law 569-2013 does not govern every parcel equally. Some properties remain subject, in whole or in part, to former zoning bylaws from Etobicoke, North York, Scarborough, York, East York, or the former City of Toronto.³ Portions of the 2013 bylaw appealed to the Ontario Land Tribunal are “not in full force and effect,” so the older rules continue until those appeals are resolved.² Bright yellow shading on the interactive map marks areas under appeal from the original enactment; dark yellow marks later amendments under appeal. If your property sits in one of those areas, check the PDF version of the 2013 bylaw alongside the applicable former municipal bylaw to see which rules actually govern.

Development Standards That Shape What You Can Build

Every zoning district comes with technical standards that define the physical envelope of any building on the lot. The four you will hit most often are height, setbacks, Floor Space Index, and lot coverage.

Height limits in residential zones typically cap buildings at roughly 10 to 12 metres, depending on roof type and zone category. A flat-roofed detached home might be limited to 8.5 metres while a pitched roof may reach 12.0 metres.

Setbacks are the minimum distances a building must sit from the front, rear, and side property lines. Side yard setbacks for a single-storey home can be as low as 0.9 metres and increase for taller structures. They protect neighbours’ light, air, and privacy, and they are the rule most renovation projects run into.

Floor Space Index (FSI) is the ratio of a building’s total interior floor area to lot size. An FSI of 0.6 means total floor area across all storeys cannot exceed 60 percent of the lot area. On a 500-square-metre lot, that allows a maximum of 300 square metres of floor space.

Lot coverage caps the building footprint at a percentage of the lot, typically 30 to 50 percent depending on the zone, to preserve permeable ground for drainage and green space. FSI and lot coverage often collide: you may have floor area left in your budget but no room to spread the footprint any wider. Most design compromises happen in that interplay.

What Uses Each Zone Allows

Every lot is assigned to a zone category that dictates which activities are permitted. The major categories break down as follows.

Residential (R, RD, RS, RT, RM): RD zones are for detached houses; RM zones permit multi-unit buildings like townhomes and apartments. Commercial activity is restricted, though home-based businesses are allowed within limits.
Commercial Residential (CR, CRE): Mixed-use zones allowing retail, offices, and residential units together, supporting higher-density living along major corridors.
Employment (EL, E, EO): Industrial, manufacturing, and office uses. Residential dwellings are generally prohibited to protect economic activity and prevent land-use conflicts.
Open Space (O, ON, OR): Parks, golf courses, ravines, and conservation areas. Building is heavily restricted.

Each category is further split into subcategories with different density and built-form rules, so two properties both labelled “R” can carry very different height limits and setback requirements. The interactive map links to the specific regulations for each subcategory.¹

Home Occupations in Residential Zones

Running a business from your home is permitted in residential zones, with real limits. No employee other than the business operator may work inside the dwelling unit.⁴ The one exception covers medical professionals regulated under provincial health legislation, who may have one additional employee. The floor area devoted to the business cannot exceed 25 percent of the dwelling unit’s total interior space or 100 square metres, whichever is less.

Short-Term Rentals

Short-term rentals are only permitted in the operator’s principal residence, defined as the address used for bills, identification, taxes, and insurance. You can only have one principal residence at a time, so you cannot legally operate more than one short-term rental. A secondary suite or laneway suite qualifies only if it is your principal residence.⁵ Operators must register with the city, display their registration number on every listing, and collect and remit the Municipal Accommodation Tax on bookings.

Up to Four (or Six) Units as of Right

Toronto’s residential zoning has expanded significantly since 2023. The city now permits up to four residential units as-of-right on virtually every residential lot across all R, RD, RS, RM, and RT zones. As of June 2025, properties in the Toronto and East York district and in Ward 23 (Scarborough North) can go up to six units as-of-right. Garden suites and laneway suites do not count against either the four-unit or six-unit cap for the main building, so a property could have a four-unit main building plus a laneway suite without a variance.

These expanded permissions do not override the other development standards for your zone. Height limits still apply, typically capping multiplex projects at roughly 10 to 12 metres or about three storeys. Setbacks, lot coverage, and FSI remain in effect. Buildings with three or more units are also subject to a bedroom cap of no more than three bedrooms per unit on average. If your project fits within all these envelope rules, you do not need a variance or rezoning, which is what “as-of-right” means in practice.

Legal Non-Conforming Uses

If a property was being used lawfully before the current bylaw took effect, that use can generally continue even when it no longer complies. Under Section 34(9) of the Ontario Planning Act, a use lawfully in place when the bylaw was passed is protected as a “legal non-conforming” use.⁶ The protection runs with the property, not the owner, so a buyer inherits the right to continue the same use.

Continuity is the catch. If you stop the non-conforming use and switch to something else, the protection lapses permanently. Temporary pauses generally do not end the status as long as there is a genuine intention to resume, but a full conversion does. Convert a non-conforming triplex into a single-family home and the right to operate as a triplex is gone.

Expanding a legal non-conforming building is not something you can do on your own. You need approval from the Committee of Adjustment, which considers whether the enlargement stays within the existing lot boundaries, involves an existing structure, and whether the owner holds title. Even when those conditions are met, the Committee can deny the application based on neighbourhood impact, such as blocking sunlight to adjacent properties. Building without approval risks an order to undo the work.

Minor Variances When Your Plans Don’t Fit

When a project cannot meet every applicable standard, the owner applies for a minor variance. Before filing, obtain a preliminary zoning review or a zoning applicable law certificate from the city’s Building Division, which identifies every point where the design departs from the rules.⁷ The application itself requires a site plan, detailed floor plans, and elevation drawings showing all relevant dimensions.

Section 45(1) of the Ontario Planning Act requires every minor variance to pass four tests:⁶

Official Plan intent: the variance must be consistent with the goals and policies of the city’s Official Plan.
Zoning bylaw intent: the variance must maintain the general purpose behind the specific regulation being varied.
Desirable development: the change must be appropriate for the development or use of the land.
Minor impact: the departure from the bylaw must be minor in its overall effect on the neighbourhood.

All four tests must be satisfied. Failing any one means the application cannot be approved. The Committee weighs practical impact on neighbours, including shadow, privacy, and streetscape effects, so strong applications address each test with supporting evidence rather than just asserting compliance.

Fees, Hearings, and Appeals

Applications are submitted through the city’s online portal or at a civic centre. Minor variance fees for 2026 are set by property type:⁸

Additions or alterations to an existing dwelling with three units or fewer: $2,228.98
New residential dwellings with three units or fewer: $5,011.08
All other residential, commercial, industrial, or institutional uses: $6,485.59

If you build first and apply for the variance afterward, the fee doubles. That alone makes it worth confirming compliance before construction starts.⁸

After filing, the city provides a public notice sign that must be posted prominently on the property, listing the hearing date and the changes requested. At the hearing, the Committee of Adjustment hears the applicant’s case and any comments from neighbours or community groups.

Any party with an interest in the matter has 20 days from the date of the decision to file an appeal. If no appeal is filed within that window, the Committee’s decision becomes final and binding.⁶ Appeals go to the Toronto Local Appeal Body, which hears the case de novo, meaning it conducts a completely new hearing rather than reviewing the Committee’s record.⁹ A filing fee is payable when the appeal is filed.

1
City of Toronto. City of Toronto Zoning By-law 569-2013
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City of Toronto. Zoning By-law 569-2013
3
City of Toronto. Zoning By-laws
4
City of Toronto. Specific Use Regulations – Home Occupation
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City of Toronto. Short-Term Rental Operators/Hosts
6
Government of Ontario. Planning Act, R.S.O. 1990, c. P.13
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City of Toronto. Zoning Applicable Law Certificate
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City of Toronto. Forms, Submission Guidelines and Fees
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City of Toronto. Key Info – Toronto Local Appeal Body