Building · Permit · Longueuil · 2026
The official permit fee in Longueuil, the delay and when it really starts, the work that needs none, the documents that block, and what unpermitted work costs on resale.
The building permit in Longueuil in 2026: The City does not publish its permit fee grid in its information sheets: the fee is calculated under the tariff by-law in force and is displayed in Permis en ligne when the application is filed (category “construction et/ou rénovation résidentielle”, nature “nouvelle construction d'un immeuble résidentiel”). Delay: the City warns that its processing times are longer than usual and that an incomplete application is not processed. Every new residential building is filed on Permis en ligne; subdivision, tree felling and demolition are separate applications to add depending on the project. The official delay only starts with a complete file (site plan by a land surveyor, plans, estimate), and a project that needs a minor variance or a PIIA waits for the council sitting. Figures read on 16 September 2026 on the City's official website.
The City does not publish its permit fee grid in its information sheets: the fee is calculated under the tariff by-law in force and is displayed in Permis en ligne when the application is filed (category “construction et/ou rénovation résidentielle”, nature “nouvelle construction d'un immeuble résidentiel”). The 311 line confirms the amount before filing.
The permit fee is never the real cost of the project: it comes on top of the surveyor's site plan, the architectural plans, the connection permit where it is separate, and the welcome tax that follows the purchase. Our page buying a new build (in French) puts the other items end to end.
The City warns that its processing times are longer than usual and that an incomplete application is not processed. A discretionary application (minor variance, PIIA, PPCMOI) follows a path of about 10 months. A building built before 1940, a heritage building or a 1-to-3-dwelling building in an old neighbourhood goes through the demolition committee first.
Every new residential building is filed on Permis en ligne; subdivision, tree felling and demolition are separate applications to add depending on the project. For small jobs (shed, fence, deck), our guide which small works need a permit (in French) gives the general rules, and the borough or planning department decides for your address.
The City asks for: a site plan signed and sealed by a land surveyor; scaled architectural plans (every floor, elevations of all walls, typical section, cross-section of the walls with materials); a dated and signed power of attorney if the applicant is not the owner; PDF files of 10 MB at most. The document that blocks most often is the site plan: it comes from a land surveyor, not from the builder, and it must be ordered early. Our guide to boundary marking and the surveyor explains it.
An extension, a garage or a basement apartment built without a permit does not disappear at the sale: the new certificate of location shows it, the seller's declaration requires you to declare it, and an informed buyer negotiates the price or demands regularization. The municipality can fine you and, in serious cases, order demolition. Before selling a converted property, have the permits checked by a broker from the team: that file is settled before the first showing, not at the notary's.
The City does not publish its permit fee grid in its information sheets: the fee is calculated under the tariff by-law in force and is displayed in Permis en ligne when the application is filed (category “construction et/ou rénovation résidentielle”, nature “nouvelle construction d'un immeuble résidentiel”). Figures read on 16 September 2026: longueuil.quebec.
The City warns that its processing times are longer than usual and that an incomplete application is not processed. The delay only runs from a complete file, and a minor variance, a PIIA or a specific project adds the council step.
A fine, a stop-work order and, in serious cases, an obligation to restore. On resale, unpermitted work shows on the certificate of location and in the seller's declaration: it is then paid for in negotiation or in regularization.
Sources: longueuil.quebec, simplified information sheet “Nouvelle construction résidentielle” (July 2025) and Permis en ligne, read on 16 September 2026. Municipal fees are indexed every year; this page is redone when the City publishes its new grid. It is informational: the City decides for your project.
The Loaa & Manseur team, led by Lotfi Manseur and Loaa Al Daow, is the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 of large residential teams according to the official RE/MAX ranking, computed on actual transactions. Its Google profile counts more than 220 reviews with a 4.9 rating. Its offices are at 55 avenue de l'Équinoxe in Brossard, one bridge from the island, and every broker's licence can be checked in the OACIQ public register. Three things to verify yourself before calling us, and to demand of any other broker.
Also available in French: version française de ce guide.
Published September 7, 2026 by the Loaa & Manseur team, the number 1 team at RE/MAX Platine in 2024 and 2025, 6th RE/MAX team in Quebec, 15th in Canada and in the global top 50 according to the official RE/MAX ranking. Tell us about your project.
Équipe no 1 de RE/MAX Platine en 2024 et en 2025, 6e au Québec, 15e au Canada et dans le top 50 mondial au classement officiel RE/MAX. Réponse en moins de 24 heures, sept jours sur sept.