Maguire Properties Declares Fourth Quarter 2007 Common Stock Dividend and Preferred Stock Dividend

Maguire Properties, Inc. (NYSE:MPG), a Southern California focused real estate investment trust, today announced that its Board of Directors has declared its fourth quarter 2007 common stock dividend of $0.40 per share of common stock. The dividend is payable on January 31, 2008 to common stockholders of record as of December 28, 2007. The Company also announced that its Board of Directors has declared a dividend payable on its Series A Preferred Stock for the period from November 1, 2007 through and including January 31, 2008 of $0.46677 per share of preferred stock. The dividend is payable on January 31, 2008 to preferred stockholders of record as of December 28, 2007. About Maguire Properties, Inc. Maguire Properties, Inc. is the largest owner and operator of Class A office properties in the Los Angeles central business district and is primarily focused on owning and operating high-quality office properties in the Southern California market. Maguire Properties, Inc. is a full-service real estate company with substantial in-house expertise and resources in property management, marketing, leasing, acquisitions, development and financing. For more information on Maguire Properties, visit the Company’s website at www.maguireproperties.com. Business Risks This press release contains forward-looking statements based on current expectations, forecasts and assumptions that involve risks and uncertainties that could cause actual outcomes and results to differ materially. These risks and uncertainties include general risks affecting the real estate industry (including, without limitation, the inability to enter into or renew leases at favorable rates, dependence on tenants’ financial condition, and competition from other developers, owners and operators of real estate); risks associated with the availability and terms of financing and the use of debt to fund acquisitions and developments; risks associated with the potential failure to manage effectively our growth and expansion into new markets, to identify properties to acquire, to complete acquisitions or to integrate acquisitions successfully; risks and uncertainties affecting property development and construction; risks associated with downturns in the national and local economies, increases in interest rates, and volatility in the securities markets; risks associated with joint ventures; potential liability for uninsured losses and environmental contamination; risks associated with our potential failure to qualify as a REIT under the Internal Revenue Code of 1986, as amended, and possible adverse changes in tax and environmental laws; risks associated with our ability to pay dividends on our common and Series A Preferred stock; and risks associated with our dependence on key personnel whose continued service is not guaranteed. For a further list and description of such risks and uncertainties, see our Annual Report on Form 10-K/A filed with the Securities and Exchange Commission on April 9, 2007. The Company does not update forward-looking statements and disclaims any intention or obligation to update or revise them, whether as a result of new information, future events or otherwise.