Septic Systems

To apply for a permit to build a deck or porch, please submit the following forms and plans through the Permit Portal or by email.

• Building Permit Application Form 
• Applicable Law Checklist 
• Schedule 1: Designers Information, for BCIN (Building Code Identification Number) designers

You need to include the following plans in your application package:

• A site plan identifying the location of the existing building and the proposed deck or porch, including all setback dimensions to property lines
• Details of footings, including footing size, spacing, depth, height above grade, and frost protection details
• Sizes and locations of all columns
• Sizes, locations, and spans of all beams
• Stair construction details, including height and depth of stair treads and headroom above stairs, where applicable
• Guard construction details, including information about openings and climbability, and the location of the grade with respect to stairways, landings, and edges of the proposed platform.

If you are building a wooden deck that is less than 600 mm above ground, you don’t need a building permit. However, you still need to call Ontario One Call before you dig and get approval from:

• Toronto and Region Conservation Authority (TRCA) or Lake Simcoe Region Conservation Authority (LSRCA) if your shed is near or on flood prone land
• A condo board if your property is not free-hold
• A builder or developer if your subdivision is unassumed
• The Ministry of Transportation (MTO) if your property touches a provincial highway