Shed, gazebo and detached garage permits in Mississauga: forms, plans and fee

Check whether you need a permit

Shed greater than 15 square metres (≈ 161 sq ft) or any size that contains plumbing
Gazebo greater than 10 square metres (≈ 108 sq ft)
Detached garage
Building or structure (other than a shed) greater than 10 square metres (≈ 108 sq ft), or any size that contains plumbing
If you’re planning to build or renovate an accessory structure like a shed, gazebo, outdoor fireplace or pergola, there are general provisions that regulate the location, size, height and number of structures permitted on your property. These regulations depend on the size of your lot.
You can find the general provisions for accessory structures in Table 4.1.2 of the Zoning By-law.
The zoning of your property might have additional regulations for accessory structures, such as lot coverage. Review the general provisions, and then check the zoning regulations for your property using the find property information tool.
If something in the general provisions conflicts with the zoning regulations for your property, follow the zoning regulations.
If your lot is next to land zoned as greenland, any new structures may have to be built farther away from your property lines.

Projects that don't need a permit

Shed less than 15 square metres (≈ 161 sq ft), one-storey tall, free-standing, doesn’t contain plumbing and used for storage only
Gazebo that’s 10 square metres (≈ 108 sq ft) or less

For accessory structures such as sheds, gazebos or detached garages, you’ll need to submit:

All building permit applications must be submitted online through our ePlans portal.

Start the building permit application process by creating an ePlans account.
Log in to ePlans and navigate to the Building Applications section.
Follow the prompts to start the application process.
Complete each step by providing the requested information.
Submit your building permit request and pay the administration fee.
Shortly after submitting your permit request, you’ll receive an email from the City that includes your temporary project number and an invitation to upload drawings and supporting documents.
Log in to ePlans and open your applicant upload task under the Current Projects section.
Follow the task instructions to upload required drawings and documents.
When you upload all of these drawings and documents into ePlans, all files must follow the required file name and format guidelines.
After you upload your drawings and documents, the City will start the pre-screen review process to ensure the minimum requirements are met.
The time frame for this step is subject to change depending on request volumes.
You cannot upload any additional information or respond to comments during the pre-screen review.
If the submission requires more information, you will be notified by email with details about the pre-screen corrections. You must complete all pre-screen corrections in order to move ahead with the application process.

For a residential property, a permit will cost a minimum of $244.
You will need to pay a $50 administrative fee when you submit your request online. This non-refundable deposit will be credited towards the total cost of your permit.
The total fees depend on the size, type and use of the proposed project or building. The exact cost of your permit will be calculated once we prescreen your request.
Fees for different types of projects are outlined in the Building Permit Fee Schedule.
There may be additional fees such as development charges or deposits you need to pay before your permit is issued.
Once your request passes the prescreen review, the City will send you an email to let you know what additional fees you need to pay.
You must pay fees under $40,000 using the applicant’s account in ePlans.
You must pay fees over $40,000 by electronic payment.