Skip Ribbon Commands
Skip to main content
Sign In

Building a Deck or Porch

Thinking of building a deck and/or porch on your property? Before you start, here is a guide to help you through the project.

Deck: a platform, or series of platforms, accessory to a main building that may be free-standing or attached to it.

Porch: a covered entranceway accessory to a main building

Sight Triangle: Required for corners lots, they provide increased visibility at intersections for the safety of pedestrians and motorists.

Planning Your Project

Before you begin, contact Service Barrie at 705-739-4242 to ensure your project:

  • Complies with Zoning By-law section (porch) or (deck) for set-backs and lot coverage
  • Doesn’t require a permit from a local conservation authority
  • Doesn’t infringe on your property’s zoned land use

Call Before You Dig! Always contact Ontario One Call before you dig, even if it’s just with a shovel, to locate any underground cables or lines below the surface.

Zoning By-law Standards

Location Minimum Distance from Lot Line
  Deck Porch
Interior side yard 0.6m (2ft) 0.6m (2ft)
Exterior side yard, corner lot 1.5m (4.9ft) 1.5m (4.9ft)
Rear yard 0.6m (2ft) 5m (16.4ft)
Front yard 3m (9.8ft) 3m (9.8ft)
Rear yard, corner lot 1m (3.2ft) 1m (3.2ft)


  • Deck specifications
  • Decks and porches cannot be located on easements. You may be able to have the easement released. For further information on easements please contact Legal Services 705-739-4220 x 4479
  • A Building Permit will be required for construction of a Pergola if attached to a Deck or Structure. 
  • Decks less than 1.75m (5.9 ft2) above grade are exempt from the 45% maximum permitted lot coverage.
  • All corner lots shall provide a sight triangle consisting of an unobstructed triangular area where the front lot line and the exterior side lot line intersect. Sight triangles provide increased visibility at intersections for the safety of pedestrians and motorists. If your property is a corner lot, be sure plans comply with sight triangle Zoning By-law standards:
    Location Minimum Distance from Lot Line
    Arterial or Collector Roads 5m (16.4ft) x 5m (16.4ft)
    Local Roads 3m (9.8ft) x 3m (9.8ft)
    Arterial or Collector Road abutting Local Road 5m (16.4ft) x 3m (9.8ft)
    Sight triangles shall be measured from the point of intersection of the lot lines. Planting is not permitted in the area of a sight triangle as plants can grow to become sight barriers.

Completing Your Project

Permits: Apply for a building permit prior to starting any work. When the permit is issued, construction can commence. This project requires:
  • Residential Deck Permit if the deck/porch is greater than 10m2 (107ft2) or attached to the building or located at an entrance
  • No permits if the deck/porch is less than 10m2 (107ft2) and not attached to the building or located at an entrance

alertSave Time: Apply Online! Use APLI, our application tool for popular permits, to apply for your deck permit online 24/7.
button: Get started

Inspections: Below are commonly required inspections based on permit type. There may be additional inspections required on a case-by-case basis. Visit the Building Inspections​ webpage for more information.

Inspection Required When to call
Footings When the footings are formed and reinforcements installed (if required), prior to pouring concrete
Framing When all framing is complete, including roof framing. If deck is less than 24” in height, call for inspection prior to installing deck boards.
Final inspection When all deck boards and  guards/railings are installed (if required)
Construction may be done in phases. Such projects may require additional inspections.

Disclaimer: The information on this page is meant for guiding purposes only. Individual home renovation projects vary in scope and may require additional steps to ensure proper completion. It is the responsibility of the applicant to ensure work conforms to any restrictive covenants, caveats or other restrictions that are registered on the land title. The information above has no legal status and cannot be used as an official interpretation of the various bylaws, codes and regulations currently in effect. The City of Barrie accepts no responsibility to persons relying solely on this information. Web pages are updated periodically.​​​​

Looks like your screen is a bit too small

The page you are attempting to view is not currently compatible with the dimensions of your device. Please visit this page on a larger screen.