Your drawings must clearly show what is existing and the changes you’re proposing. Drawings must be to scale, and should use metric measurements. We may request additional information when your application is reviewed.

For an addition, you’ll need to submit:

The site plan must include the following:

  • Scale (metric only)
  • Direction (North arrow)
  • Municipal address
  • Legal description (lot and plan numbers)
  • Existing buildings and accessory structures labelled “existing”
  • Proposed construction (hatch and label “PROPOSED” in capital letters)
  • Dimensioned property lines
  • Overall building dimensions
  • Rights-of-way and easements
  • Landscaped areas and hard surfaces such as driveways and walkways

Set backs

  • Setbacks from all property lines to all new and existing structures
  • Setbacks from all property lines to all encroachments (porch, stairs, window wells, decks)

Site statistics

  • Lot area
  • Lot frontage
  • Lot coverage (meters squared and percent)
  • Description or breakdown of what is included in coverage
  • Gross floor area (GFA) infill residential figure (meters squared) with breakdown of each floor
  • Garage area (meters squared)
  • Area of the yard in which the driveway is located (meters squared)
  • Landscaped soft area of yard where the driveway is located (meters squared and percent)

Driveway and walkways

  • Driveway width
  • Driveway setback to adjacent property line(s)
  • Driveway surface treatment
  • Dimension of any walkway attachment width to driveway


  • A/C location and setback
  • Window well locations and setbacks
  • Dwelling unit depth

The floor plan must include the following:

  • Direction (North arrow)
  • Title and scale
  • Use and size of rooms and spaces
  • Interior and exterior dimensions, including door and window sizes
  • Structural framing indicating the size, type, grade, spacing, direction of span and location of all structural members (joists, beams, posts and lintels, as well as engineered floor members when applicable)
  • Location of required smoke alarms and carbon monoxide detectors
  • Location of existing and proposed plumbing fixtures labelled accordingly
  • Floor drains and ventilation provisions
  • Section marks

In addition to the above, the Foundation/Basement Plan must include the following:

  • Soil bearing capacity
  • Size, thickness and material specifications of foundation walls and footings
  • Step down footing (SDF) locations
  • Size, spacing and footing specifications of interior load-bearing walls and columns
  • Concrete slab and granular fill thickness and material specifications
  • Size and grade of steel beams and columns

If using an engineered floor system, the floor framing layouts and design specifications from the manufacturer/supplier are required.

The floor system package provided by the manufacturer/supplier would require a Professional Engineer seal and signature on all specification sheets pertaining to structural design of members subject to point loads.

The roof plan must include the following:

  • Roof slopes
  • Roof space ventilation
  • Location of skylights and surrounding framing
  • Size, grade and spacing of roof rafters, roof joists (if cathedral or flat), ceiling joists, collar ties and ridge supports for conventional roof framing
  • When applicable, spacing and direction of span of engineered roof trusses
  • Location of girder trusses and beams
  • Building Designer’s statement of roof truss system coordination with architectural/structural drawings

If using an engineered roof truss system, the roof trusses specifications from the manufacturer/supplier, bearing the seal and signature of an Ontario registered Professional Engineer, together with the roof framing layout are required.

Elevations are required for each side of the project. They must include the following information:

  • Title and scale
  • Grade level
  • Existing and proposed work
  • Finished floor levels
  • Vertical dimensions
    • To the highest ridge from the average grade
    • To the eaves from average grade
    • To the midpoint of the roof from average grade
  • Exterior wall cladding, finishes and flashing
  • Sizes and location of windows and doors
  • Roof overhang and dimensions
  • Roof shape, slope and finish
  • Height of chimneys
  • Rain water leaders and eavestroughs
  • The percentage of glazed areas relative to exposed building face calculations

Sample drawings

Contact us

If you need more information, call 311 (905-615-4311) or contact us online.