Minor Alterations

Alterations or extensions of less than 40 m2.

Required documents for a preliminary review:

  • A letter describing the scope of the proposed work;
  • A letter from the building owner authorizing the permit application, if the request is made by a third party;
  • A letter from the association of co-owners authorizing the proposed modification;
  • A copy of a recent certificate of location, showing the current conditions of the property;
  • Clear and coulor photographs of the existing property (site, facades, pertinent interiors) as well as a street view showing the adjacent properties;
  • A complete set of preliminary architectural drawings, scaled and dimensioned, folded to an 8,5” x 14” format, demonstrating existing and proposed conditions and compliance to current regulation, including:
    • A site plan showing setbacks, property lines, existing buildings, extensions, retaining walls, steps, major trees, any mechanical or electrical equipment installed outside a building and site coverage calculations (before and after) ,
    • A plan of each floor to be modified,
    • A roof plan,
    • An elevation of each affected façade: existing, new and modified,
    • A street scape elevation including the neighbouring buildings, to demonstrate integration into the context,
    • Longitudinal and transverse sections,
    • A topographic study, if the terrain is rugged.
  • Clear and coulor photographs of a sample of the main exterior proposed materials taken beside the existing façade to demonstrate integration;
  • A work order from the selected windows and doors manufacturer, including an illustrated technical data sheet showing the considered model(s), including a coordinated numbering listed in a table and coordinated on photos and with the proposed elevations.

If the style of the new windows and doors is different from the existing or the original one, also submit the following:

  • Shop drawings from the manufacturer, detailing the profile of doors and/or windows.

If the window opening is widened, also submit the following:

  • A dimensioned lintel detail, stamped and signed by a structural engineer;
  • Images of a 3D model illustrating the massing of the new construction in its context. (Depending on the nature of the site and the complexity of the project, a physical model may be required.)

Additional documents required for final analysis, upon favourable preliminary review:

  • Clear and coulor photographs of all samples that were not previously presented and exterior materials;
  • A complete set of working drawings (architecture, structure, mechanical, electrical), to scale, folded to 8,5” x 14” format, stamped and signed by the appropriate professional (OAQ, OIQ);
  • An inspection report from a licensed professional identifying the presence or absence of asbestos in compliance with the regulation respecting occupational health and safety (S-2.1, r.13);
  • A preliminary landscaping plan, or a letter describing the intent on the subject; the modifications to the site are subject to a distinct permit request;
  • An official cost estimate, excluding taxes, provided by a general contractor.

 This list is a summary. Please note that additional documents or information may be required in order to provide a better understanding of the project and contribute to the request process. (By-Law #1300, article 65, point 14o)


Once you have gathered all the information you can open your file at the Urban Planning Counter in City Hall or open an online application.

  • The fee for the document analysis is 55$; the cost of the permit is separate.
  • The cost of the permit is calculated from the cost of work.
  • Important: All files will be consulted by the Urban Planning Department before they are referred to the Planning Advisory Committee and City Council!
  • The applicant will receive a follow-up via email.

Your file is deferred:

  • If there is still some information missing, you will need to provide it as indicated in the minute.

Your file is recommended for approval.

The following information must be submitted:

  • A complete set of architectural, structural, mechanical and landscaping drawings; folded to 8 1/2’’ x 14’’ (one extra complete set of scaled drawings may be required) and samples of all materials proposed for the exterior must be submitted.
  • All samples for proposed exterior materials.

Your file will be seen at the following Council meeting.

  • Your permit will be issued at city hall or sent by email.

Information you need to bring:

  • A detailed construction cost, excluding taxes as provided by the general contractor or a project manager (tariffs By-law).
  • All other documentation requested in the minute that need to be deposited prior to issuance of a permit (ex. RBQ form, a site management document, asbestos report, sidewalk deposit, …).

No exterior changes to a building or a property.

Need help with applying for a permit online? Here is a step-by-step guide