Résidence Antonine-Maillet

This project was completed in 2016 and consisted of a complete interior renovation, exterior restoration, and the addition of a 1-storey extension above the garage of a single-family house in Outremont, Montréal.

One of the principle factors that guided the development of this project was the integration of the aluminum-clad, contemporary extension to the existing brick house. Careful considerations were taken with regards to the alignments of the two contrasting elements in order to harmonize their appearance. The extension includes two additional bedrooms each with a unique aperture to the outside. The front features a protruding glass box that is glazed on four sides and provides a view up and down the street from above. The extension cantilevers over the backyard and gives the back room the sensation of being up in a treehouse.

Glass partitions are used extensively throughout the project to provide physical subdivisions of the overall space while maintaining extended views between rooms and from one end of the house to the other. For example, the entrance vestibule and main staircase were conceived with maximum transparency to provide as much depth and grandeur to the living spaces as possible. The central stringer stair is framed by structurally independent glass partitions and features cantilevered treads that appear to float. This also allows light to penetrate deeply into the house from all directions fulfilling the client’s wish to transform the original, segmented house into a bright, open series of visually interconnected space.

Further to the replanning of the spaces, we coordinated and supervised the installation of a new steel structure in the existing house and in the extension, the addition of new electrical, plumbing, ventilation, air conditioning and smart home systems. In addition to the landscaping in the front and back of the house, which was completed during the building renovation and construction, the clients added a swimming pool to the backyard in 2020.

Project type

Extension, restoration, residential

Completion date



Alt and Agapi Architects, execution drawings architect of record *^Calculatec, structural engineer *^GeniMac, mechanical engineer

Photo credits

Steve Montpetit


Outremont, Montreal