Brookfield Residential, Brookfield Asset Management's U.S.-based home building business. In 2005, Brookfield Properties acquired a 25% interest in O&Y Properties Corporation and O&Y Real Estate Investment Trust, expanding the company's real estate portfolio in four Canadian cities. In 2006, the company acquired Trizec Properties, which was founded in 1960 by William Zeckendorf, builder of Place Ville Marie. 2010s In 2010, it entered into London and Australian markets by acquiring the 100 Bishopsgate development site in the City of London and 16 properties encompassing 8 million SF in three major Australian cities. On Earth Day on April 22, 2010, the company was listed as one of Canada's "The Green 30" Organizations Based On Eco-Friendly Programs and Practices based on an employee poll. In 2011, Brookfield Properties divested its residential group consisting of Carma Developers and Brookfield Homes (Ontario) Ltd. to merge with Brookfield Homes Corporation to form Brookfield Residential Properties Inc. That same year, Brookfield Properties changed its name to Brookfield Office Properties to reflect its focus on commercial office properties. In 2013, Brookfield Office Properties Inc. became the largest office landlord in Los Angeles after acquiring MPG Office Trust Inc.'s downtown portfolio. MPG had been one of Southern California's most prominent real estate developers and a longtime L.A. office tower owner. The MPG buildings they acquired include the Gas Company Tower, 777 Tower and the Wells Fargo Center on Bunker Hill. In June 2014, Brookfield Property Partners (BPY) completed their acquisition of Brookfield Office Properties (BPO). BPO common shares were de-listed from the Toronto Stock Exchange as of June 10, 2014, and from the New York Stock Exchange on June 20, 2014. Brookfield Property Partners is now the sole owner of all of the issued and outstanding common shares of BPO. On August 28, 2018, Brookfield Property Partners acquired Chicago-based real estate investment trust and shopping mall operator GGP Inc. (General Growth Properties), and merged its assets into Brookfield Properties, for $9 billion. Brookfield immediately sold a 49% interest in each of three former GGP super-regional malls to CBRE Group, and a 49% interest in three other former GGP malls to TIAA subsidiary Nuveen, seeking additional joint ventures for its newly acquired malls. The acquisition added 162 shopping malls comprising approximately of gross leasable area to Brookfield's portfolio. In December 2018, Brookfield Properties took over the management of Forest City Realty Trust's real estate portfolio after the company was acquired