Le Groupe Rousseau Lefebvre

Mont-Royal Chalet _Montreal



City of Montreal


  • Pierre-Émile Rocray, forest engineer
  • SDC Signature design communication, industrial designer
  • Susan D. Bronson, MOAQ, PA LEED, FAPT, Architect and consultant in heritage conservation and environmental design
  • Tetra Tech QI, engineering

Environmental and sustainable benefits

  • Sustainable stormwater management
  • Protection of natural habitats
  • Creation of ecosystems and green corridors
  • Increased biodiversity
  • Health and well-being
  • Lower infrastructure costs
  • Lower maintenance costs

The Ville de Montréal called on the Rousseau Lefebvre Group's expertise in the natural environment for the redevelopment of one of its main tourist attractions, the Mont-Royal Chalet.

The project initially consisted of revising the approaches to the Chalet, especially the eastern approach where a new staircase will allow more than 3.5 million tourists to arrive at destination in a safer way.

A major stormwater management system is used to direct and manage stormwater runoff from upstream basins to reduce damage to sensitive mountain soils.

Finally, to protect the fragile ecosystems in place, the eradication of invasive plants (Norway maples, buckthorn) has been orchestrated. Part of the site has been naturalized to improve the quality of the landscape experience, prevent erosion of the site and contribute to the increase of biodiversity.