Non-residential interior alterations

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 interior alterations to a non-residential building 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)
  • All 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
  • OBC Matrix


  • Location of parking areas
  • Setback to adjacent property line(s)
  • Surface treatment
  • Typical parking space dimensioned
  • Typical accessible parking space dimensioned
  • Aisles dimensioned

Set backs

  • Setbacks from all property lines to all new and existing structures

Site statistics

  • Lot area
  • Lot frontage
  • “Gross floor area (GFA) Non-Residential” figure (meters squared) with breakdown of each floor
  • Number of parking spaces required and parking rate
  • Number of parking spaces provided
  • Number of accessible parking spaces required

The key plan must:

  • Indicate the unit number and location
  • Indicate the project area in relation to the rest of the building and the occupancies of any adjacent units (a combined Site Plan/Key Plan may be provided)

These drawings must:

  • Identify the use and size of all rooms and spaces
  • specify existing and proposed construction/demolition work,
  • Identify all existing and proposed fire separations, partition and door schedules
  • Show all necessary construction details for proposed construction including fire-rated assemblies

These drawings must:

  • Provide design criteria, construction details and specifications for all proposed structural modifications required as a result of a change of use or new construction

These drawings must include the following:

  • Distribution system plan including unit location and specification, duct size and volume, fire dampers and fire stop flap locations
  • Heat loss/heat gain calculations

These drawings must:

  • Provide existing and proposed fixtures and a drain plan indicating the pipe size if changes to existing or additional plumbing are proposed

These drawings must:

  • Provide the location of all required exit signs and emergency lights
  • Show where the building is equipped with a fire alarm system
  • Provide a complete layout designed by an electrical engineer

These drawings must include:

  • Where changes to existing room or space layout are proposed (hydraulic calculations where applicable)

These drawings must:

  • Be designed in compliance with NFPA 96, applicable to all commercial cooking facilities

Contact us

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