New house and garden suite permits in Mississauga: forms, plans and fee

Check whether you need a permit

Most renovation, construction or demolition projects require a building permit.
For new residential buildings, including garden suites, you’ll need to submit the documents below.

Check the zoning rules

If you’re planning to build a new home or an addition, your proposal will need to adhere to the zoning regulations for your zone. Typically, these regulations identify:

What type of dwelling is permitted
How far you need to be from property lines
How much of your lot you can cover
How tall your proposal can be
Maximum floor area
Depending on your zone, there may be additional regulations.
There are also general provisions that may apply to your proposal. Check Part 4 of the Zoning By-law.
You can find your zoning designation and regulations using the find property information tool.
Zoning staff will confirm that your proposal meets the zoning regulations when you submit your building permit application.
Average Grade Information Sheet
Established Grade Information Sheet
Stairs and Stairwell Information Sheet

Complete the forms9

For new residential buildings, including garden suites, you’ll need to submit the following documents. We may request additional information when your application is reviewed.

Submit your application

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 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.
It usually takes about 7 to 10 business days to prescreen your request. This 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.

Pay the fee

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.
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.
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.
Once you have paid the required fees, your application will be created and the City will send you a new application number by email.

Complete the department review

Your application will then be sent for a detailed review by the relevant review groups to make sure it meets the building code, zoning by-law and other applicable laws.
When the review is completed by each review group, they will mark your application as either “approved” or “withheld”. You cannot upload any additional information or respond to comments when a file is in review.
If any of the review groups have “withheld” your application, you will need to resubmit revised or additional information once all examiners have completed the review. You can view outstanding comments in ePlans on the Project Status Report. The City will send you an “applicant resubmit” email that details what you need to do next. Each resubmission cycle could add two or more weeks to the process.
Residential applications – 10 business days
Incomplete applications are not subject to the timelines listed above.
New residential (detached, semi) – 13 weeks
We recommend that you apply for your building permit well in advance of your construction date.