Tree felling

City authorization for tree felling on private property is required in all cases, except if the tree is not more than 10 cm (4 in.) in diameter, when measured at a height of 1,5 m (5 ft.) from the ground.

In order to protect Westmount’s tree canopy, tree cutting is only authorized in the following circumstances, and after the issuance of a certificate of authorization for tree cutting:

  • based on an arboriculturist’s report, the tree is dead or in a state or irreversible blight, with more than 50% of the crown consisting of dead wood;
  • the tree is within the building site of a projected construction (structure or retaining wall) or within 3 meters of the building site of a projected construction (structure or retaining wall) – Please note that a building permit or landscape certificate is a pre-requisite in this context;
  • the tree is located within the building site of a swimming pool or, in the case of the front yard, within the building site of accessory parking or means of access to a building, but only if no other area is available elsewhere on the parcel of land for such construction – Please note that a building permit or landscaping certificate is a pre-requisite in this context;
  • based on an arboriculturist’s report, the tree is likely to spread a disease or is an exotic invasive species and accordingly, must be replaced;
  • based on an arboriculturalist’s report, if the tree represents a dangerous condition due to an irreversible situation resulting from a disease or structural deficiency affencting its solidity;
  • If the tree causes serious damage to a property – Please note that the City may require a report signed by an engineer.

Required documents for review:
Mandatory documents are marked by an asterisk (*)

  • *A letter from the building owner authorizing the certificate application, if request is made by a third party;
  • *A letter from the association of co-owners authorizing the proposed modifications, if applicable;
  • *A copy of a certificate of location indicating the location of the tree to be removed;
  • *A clear and colour photograph of the tree to be removed;
  • *An arboriculturist’s report, written and signed by an arborist (certification or diploma) or a landscape architect (AAPQ);
  • A report signed by an engineer, if applicable;
  • A plan indicating the proposed replacement program (by an arborist or landscape architect), if applicable;
  • A tree protection method for the surrounding trees, if applicable;
  • A site plan showing existing and proposed landscaping, if applicable;
  • *An official cost estimate, excluding taxes, provided by a Professional to intervene on said tree(s).

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)

  • *The fee for the document analysis is 55$; the cost of the certificate is separate.
  • The cost of the certificate is $107 per tree.
  • The applicant will receive a follow-up via email.
  • 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 that needs to be deposited prior to the issuance of a permit (ex. RBQ form, a site management document, asbestos report, sidewalk deposit, …).

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