The Bois-Franc project was launched on August 6, 1993. Located on the former grounds of the Cartierville Airport, this avant-garde residential neighbourhood offers residents an outstanding quality of life, thanks to the presence of numerous nearby green spaces, commercial establishments and service facilities as well as its privileged geographical location close to major highways.

Cosmos refers to the area located in the southeastern part of Saint-Laurent territory. Bounded by Avenue Sainte-Croix to the west as well as the Metropolitan Autoroute to the south and the CN rail line to the north and east, this project was got under way in 1949. It includes more than 480 housing units consisting of single-family homes and rental buildings.

Located near the Montpellier train station, this sector developed after 1975. Its location, along Boulevard Montpellier, corresponds to that of the very first industry to have been established in Saint-Laurent: the stone industry. Large condominiums were built on the former quarry.

The Marlborough sector dates back to the 1950s. It has developed from three residential communities: one near Boulevard Toupin and Boulevard Henri-Bourassa; another further north, along Boulevard Toupin, and a third along Rue Cousineau and Rue Somerset.

Adjacent to the Bois-Franc sector, the Nouveau Saint-Laurent sector began its development in the early 1990s on former farmlands and the Challenger golf course. There is a wide variety of residential buildings here, ranging from condominiums to large, luxurious single-family homes and various types of townhouses.

Construction of the 248 single-family homes in this sector began in 1942. Norvick was developed after the Canadian government created Wartime Housing Limited, a company responsible for building housing to meet the needs of thousands of workers involved in the war effort.

With nearly 15,000 residents, the Chameran sector is home to nearly 16% of the borough’s total population and is noted for its multicultural character. Since the 1980s, this sector has become a welcoming place for new immigrants, mainly from Lebanon, which has earned it the nickname “Little Beirut”.

Vieux-Saint-Laurent is known as the borough’s downtown core. Its major thoroughfare is Avenue Sainte-Croix, formerly known as Rue Principale. To the east of this road are large institutions and to the west, most of the commercial establishments and homes in the area.

The Technoparc Montréal project began in 1987 with the creation of the Centre d’initiative technologique de Montréal (CITec). Located at the intersection of highways 40 and 13, just north of the runways of Montréal International Airport, it is now home to more than 100 companies specializing in aeronautics, pharmaceuticals and clean energy, among other fields.