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Accessory Buildings and Structures

Accessory Buildings

Accessory buildings and structures are permitted within the City of Mississauga subject to the regulations of Zoning By-law 0225-2007. They include:

  • sheds
  • gazebos
  • pergolas and
  • detached garages.
The regulations limit locations, sizes, height and floor areas.

A building permit may not always be required, but all accessory structures must comply with zoning by-law regulations.

The regulations that deal with accessory structures can be found in 4.1.2 - Accessory Buildings and Structures of the zoning by-law.

When planning your project, find out the zoning designation of your property. Confirm your property size and area with a lot survey and be aware of the surrounding zones that might limit what you can build on your property.

If your lot is next to land zoned greenbelt for example, any new structures will have to be built farther away from the edge of your lot than would be normally required.

For more information, see Section 4.1.8 - Minimum Setbacks to Greenbelt Zones below

Detached Garages

A garage is defined in the zoning by-law as a building, structure or part thereof, including a carport, used for the parking of motor vehicles having adequate access to a driveway.

The Detached Garage Information Sheet shows how the regulations in Table - Accessory Buildings and Structures work.

Gazebos and Pergolas

A gazebo is defined in the zoning by-law as an unenclosed structure with a roof.

The Gazebos & Pergolas Information Sheet shows how the regulations in Table Buildings and Structures work.

Other Accessory Buildings (e.g. sheds)

Other Accessory Bldg.
An accessory building is defined in the zoning by-law as a subordinate building or structure on the same lot as the main building, or subordinate to part of the main building and used exclusively for an accessory use.

The 'Other Accessory Buildings and Structures Information Sheet' shows how the regulations in Table Buildings and Structures work.

Table 4.1.8 - Setbacks to Greenbelt Zones The minimum setback for all buildings, structures, parking areas and swimming pools in Residential Zones to all lands zoned G1 or G2 Base Zone, shall be the greater of 5.0m or the required yard/setback. (0179-2018) The setback for an outdoor swimming pool shall be measured from the inside wall of the swimming pool to a G1 or G2 Base Zone or a G1 or G2 Exception Zone. (0179-2018)

Any information contained herein is strictly for information purposes only and should be reviewed in conjunction with Zoning By-Law 0225-2007, as amended. In the case where the information provided conflicts with that of the text contained in Zoning By-law 0225-2007, as amended, the text shall prevail. It should not be relied on when making decisions in connection with real estate transactions, development proposals or building permits.

Please visit the Mississauga Civic Centre, between 8:30 a.m. and 4:30 p.m. to review the Official Zoning By-law and to speak with staff before making important decisions.

A list of amendments passed by Council but not yet incorporated into the office consolidation copy can be found on the Unconsolidated Zoning By-law Amendments document. 

Copies of Zoning By-law Amendments are available at:
Office of the City Clerk
Corporate Services Department, 2nd Floor.