The Town of Mount Royal has approved the 15-40 megamall project.
The 230,000 square metre complex will be built southwest of the intersection of Highways 40 and 15, at a cost of $1.7 billion.
The developer, Carbonleo, said the Royalmount Mall will include hotels, stores, offices, restaurants, and cinemas as well as concert halls.
The project has faced criticism from local business owners and politicians, as well as many residents of Montreal who say the project will create a traffic nightmare.
Only one councilor voted against the project.
