Trium Immobilier began in 2016 as an independent commercial real estate brokerage founded by Pierre Therrien and Martin Vallée. The company focuses on brokerage services for the acquisition, sale, and leasing of commercial space, with an emphasis on corporate real estate. It serves markets across Montreal, Laval, the Laurentians, and Quebec City, and maintains properties in other Quebec areas including the South Shore, Sherbrooke, and Saguenay. The company positions itself as a facilitator of transactions built on transparency, rigor, and collaboration.