McGill real estate broker, realtor. McGill real estate, real estate agency sales and condo project marketing in Montreal, condo for sale Montreal, condo Montreal. McGill Real Estate is currently the largest real estate agency in Quebec specialized in the sales and marketing of residential real estate projects. Two great leaders in Montreal’s real estate brokerage industry Patrice Groleau and Debby Doktorczyk founded the agency several years ago. The success was instantaneous as McGill Real Estate involved itself with Quebec’s recent largest real estate successes. Over the years, the agency built close ties with a good number of the major developers in the city. The agency is in charge of overseeing its seasoned sales teams and of marketing key new condo real estate projects currently on the market in Montreal.