Brookfield Office Properties (BPO: NYSE, TSX) announced today that its 2011 second quarter results will be released prior to the market open on Friday, August 5, 2011. Analysts, investors and other interested parties are invited to participate in the company’s live conference call reviewing the results on Friday, August 5 at 11:00 a.m. (ET). Scheduled speakers are Ric Clark, chief executive officer, and Bryan Davis, chief financial officer. Along with the earnings news release, an updated supplemental information package will be available on the company’s website, www.brookfieldofficeproperties.com, before the market open on August 5. To participate in the conference call, please dial 888.596.2565, pass code 3780464, five minutes prior to the scheduled start of the call. Live audio of the call will also be available via webcast at www.brookfieldofficeproperties.com. A replay of this call can be accessed through September 5, 2011 by dialing 888.203.1112, pass code 3780464. A replay of the webcast, as well as a podcast download, will be available at www.brookfieldofficeproperties.com for one year. New York and Houston Investor Days Brookfield Office Properties will hold an investor day in New York on Monday, September 26 and in Houston on Monday, November 14. Please visit www.brookfieldofficeproperties.com for more information and to register for one or both events. About Brookfield Office Properties Brookfield Office Properties owns, develops and manages premier office properties in the United States, Canada and Australia. Its portfolio is comprised of interests in 109 properties totaling 78 million square feet in the downtown cores of New York, Washington, D.C., Houston, Los Angeles, Toronto, Calgary, Ottawa, Sydney, Melbourne and Perth, making it the global leader in the ownership and management of office assets. Landmark properties include the World Financial Center in Manhattan, Brookfield Place in Toronto, Bank of America Plaza in Los Angeles, Bankers Hall in Calgary, Darling Park in Sydney and City Square in Perth. The company’s common shares trade on the NYSE and TSX under the symbol BPO. For more information, visit www.brookfieldofficeproperties.com.