Lachine Borough Municipal Regulations and Permits on Masonry

Lachine Borough Municipal Regulations and Permits on Masonry

Masonry Guide for Lachine Borough in Montreal

Renovation and Exterior Siding Rules

Minor Maintenance and Repairs

When considering masonry work in Lachine, it's essential to be aware of the prevailing regulations. For minor interventions, such as maintaining or repairing the siding of an exterior wall, no permit is needed. Moreover, if you aim to replace up to 50% of the siding on a storey with identical material, there's no need for administrative procedures.

Significant Interventions

However, for more extensive operations, like replacing more than 50% of the siding or opting for a different material, obtaining a permit becomes mandatory.

Materials to Avoid

It's crucial to note that certain materials are not allowed for exterior siding in Lachine, including:

  • Rough-sawn lumber, except for decorative elements
  • Tar papers or those mimicking other materials
  • Fiberboard
  • Particleboard panels and plywood
  • Uncovered hollow concrete blocks, with exceptions
  • Brick or stone attached without mortar
  • Certain insulators like polyurethane
  • Non-enamelled sheet metal, whether galvanized or not
  • Non-architectural sheet metal, except in industrial zones
  • Vertical or angled clapboard, whether aluminum or vinyl
  • Non-woven or non-laminated plastics
  • Asphalt shingles, unless for roofing
  • Paints and coatings imitating other materials
  • Fiberglass

Associated Permit Costs

The permit fees depend on the estimated cost of the work:

  • $9.80 for every $1,000 of work
  • A minimum of $157 for residential buildings
  • $462 for commercial, industrial, or mixed-use buildings

It's worth noting that all associated work costs should be included in the estimate. Additional charges might be added if your building is in a heritage zone or subject to specific architectural norms.

Required Documentation

To process your request, you must provide:

  • A detailed cost estimate, including taxes
  • A location certificate
  • Recent photos of the neighboring building facades
  • Photos of the facades involved in the work
  • Any other necessary document

If the work is in a condominium, an authorization letter from each owner or a resolution from the syndicate is needed. If you're applying as a representative, a power of attorney is also required.


At Masonry Montreal, we are committed to providing you with the most accurate and up-to-date information regarding Lachine borough regulations. If you have any questions or concerns, don't hesitate to reach out to us. We're here to help you navigate these regulations and ensure your masonry projects are carried out according to current standards.

If you have any questions or concerns, do not hesitate to contact your borough's permit counter for clarification. Here is the link for the official page of the Municipal Regulation of the Lachine Borough.