GGP | 34,767 followers on LinkedIn. On August 28th, 2018, GGP Inc. became the retail arm of Brookfield Properties. As Brookfield Properties Retail Group, we rank among the largest retail real estate companies in the United States. Our extensive portfolio of mall properties spans the nation from Hawaii to Maine—encompassing 163 locations across 42 states and representing over 146 million square feet of retail space.