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Longueuil tree rules

Current municipal technical sheets include tree-felling authorization; exact conditions should be checked in the applicable sheet/rule.

Last verified: September 28, 2026Primary municipal source reviewed September 23, 2026

The local rule

Longueuil publishes a dedicated “Abattage d’arbre” information sheet and authorization-certificate material for tree felling.

The City warns that its simplified sheets are not exhaustive, so owners should use the current authorization material and verify any additional zoning provisions before cutting.

Local exceptions and conditions

Scope and protected trees

  • Longueuil's tree-felling documents include a July 2025 technical sheet specifically for trees of 5 cm diameter or more.
  • Another City sheet addresses 10 cm DBH, so do not flatten all of Longueuil's sectors and circumstances into a single national number without identifying the applicable technical sheet for the lot.
  • The municipal rules generally restrict felling and allow it for defined reasons such as a dead or dangerous tree or an approved construction project.
  • The tree's location, health and whether a replacement is feasible matter.
  • A small yard tree can still require a certificate.

Applications and timing

  • The City offers online applications for certificates of authorization.
  • Its permit portal distinguishes categories that may be issued immediately online from files requiring urban-planning staff review; do not infer that every healthy-tree felling certificate is instant.
  • Prepare the site location, tree species and diameter, condition evidence and the reason for removal, then select the correct neighbourhood and certificate category.
  • A professional's written recommendation may be required in some cases.
  • Wait for the issued authorization rather than relying on an online submission receipt.
  • Check any replacement condition on the certificate before arranging stump work or replanting.

Enforcement and exceptions

  • Unapproved cutting can be prosecuted under the relevant Longueuil regulation; the exact fine and replacement obligation must be taken from the applicable bylaw, not from a fee displayed for an unrelated certificate.
  • The materials reviewed do not establish one separate citywide heritage-specimen diameter, but protected natural areas and site-specific planning conditions need their own review.
  • The official 2025 technical sheet is linked here directly for a property-specific check.

Choose the right certificate category

  • Longueuil's own materials illustrate why a certificate category must be chosen before measuring.
  • The City publishes a 2025 technical sheet for felling a tree of 5 cm or more and a separate sheet framed around 10 cm DBH.
  • Its permit portal then distinguishes work that may be issued immediately online from work requiring the urban-planning department's review.
  • A seven-centimetre ornamental tree in a small yard should not be cleared because the owner found only an older 10 cm document; confirm the relevant sector, tree condition and current certificate route.
  • A dead tree and a healthy tree removed for construction may require different evidence and decision steps.

Application and replacement

  • The application should locate each tree, give species and dimensions, explain the proposed work, and attach any professional recommendation the selected route requests.
  • Payment and submission are distinct from issuance when staff review is required.
  • The City's greening information says a certificate is required for tree felling, including dead trees, under its municipal framework, which is why dead wood should not simply be assumed exempt.
  • A construction permit should also match the tree work on the site drawing.
  • The 2025 sheet is a more useful current reference than a generic Canadian diameter chart, but it is still the property's exact zoning and any protected-area condition that determines the final approval.

Before work starts

  • Ownership: check the property line. Public and boundary trees may follow a different process.
  • Site context: review any development approval, covenant or protected-area conditions.
  • Work requirements: confirm any permit, exemption or protection requirements that apply to the planned work.
Helpful guides
Public vs. private treesConstruction near treesTree-removal permits

Official sources

Longueuil official tree / bylaw pageOfficial source ↗official Longueuil 2025 tree-felling certificate technical sheetOfficial source ↗

Last verified: September 28, 2026 · Primary municipal source reviewed September 23, 2026. Rules can change; confirm with the local authority before work. How we research

Local detail review: September 28, 2026.