This page summarizes Montreal permit information. Use the official city links for the current rules on your address and project.
Montreal’s published permit rules, in plain English:
Montréal identifies minor interior work such as painting, flooring, cabinets and counters as examples that may not require a permit.
Structural changes and changes to walls or floor area can require municipal authorization; electrical, plumbing and gas work can also involve provincial authorities.
Montréal lists painting, flooring, replacing cabinets or counters and replacing an existing sink or bath among examples of minor interior work that can be permit-exempt.
A permit is required when work affects foundations, changes the structure, modifies a wall, increases floor area, or changes the dimensions, division or use of rooms.
For many renovation applications the City asks for a certificate of location, project-cost information and drawings showing the existing and proposed layout; structural work can require engineer-sealed plans.
The City notes that electrical, plumbing and gas-heating work is subject to provincial requirements rather than a Montréal renovation permit process.
Montreal uses Quebec's municipal permit/certificate system. See the Quebec permit overview for province-wide context; the exact local route still depends on the project and address.
Key items named by the municipal source:
Choose a project below. “Dedicated municipal source” opens a project-specific city page; “Municipal permit hub” opens the broader official permit source.
Exterior work and projecting elements such as balconies and terraces are part of Montréal renovation permitting; requirements can vary by borough.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Accessory-building dimensions and location are regulated locally. Use the borough-specific permit information before buying or building.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Cosmetic work can be exempt, but changes to walls, room layout, structure or use require municipal authorization.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Changing the number of dwellings or use/layout is not minor cosmetic work and requires municipal review.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →An addition changes the building footprint or floor area and normally needs a full municipal permit review. Check zoning, drawings, structural requirements and any site-specific approvals in Montreal.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Montréal says minor aesthetic work such as changing flooring, repainting, replacing cabinets/counters or replacing a sink/tub can be permit-exempt, while structural changes or added floor area require a permit.
Open Montreal’s project guidance ↗Read the general Canada planning guide →Do not treat structural work as cosmetic. Removing or adding walls, changing openings, altering framing or foundations, or changing load paths can require building-permit review in Montreal.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Check the borough rules and the permit/certificate category for the installation.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Construction or enlargement of an accessory building should be checked through the borough permit system.
Open Montreal’s municipal permit hub ↗Read the general Canada planning guide →Montréal says the city does not issue permits for plumbing, electricity or electric/gas heating, but provincial rules still apply. The Régie du bâtiment du Québec is the relevant authority for those trade requirements.
Open Montreal’s project guidance ↗Read the general Canada planning guide →2 project cards use a verified dedicated municipal/project source; 8 use Montreal’s broader official permit source.
Source-label rule: “Dedicated municipal source” means we verified a project-specific Montreal page. “Municipal permit hub” means the municipality publishes the answer through a broader permit page or portal. We do not invent a project URL.
Primary authority: Montreal’s official municipal permit information. Project links are labelled by source depth.
Montreal uses Quebec's municipal permit/certificate system. See the Quebec permit overview for province-wide context; the exact local route still depends on the project and address.
Open primary Montreal source ↗How Home Permits Canada fact-checks pages →Use these Montreal municipal links before you spend money on final drawings, materials or construction. They are the authority for the current local process.
Montreal sources checked September 13, 2026. Use the linked municipal pages for current forms, fees and rules; Home Permits Canada is independent.
