CUPERTINO, CA (REIT Media) March 10, 2008 - Mission West Properties, Inc. (Amex: MSW) announced today that its board of directors has approved the decision to switch the listing of its common stock from the American Stock Exchange to the NASDAQ Stock Market LLC. Effective March 24, 2008, the company will trade under the symbol NASDAQ: MSW.

"This decision was reached after careful consideration of capital market alternatives and analysis of the electronic market model, which provides added visibility to our investors," said Carl E. Berg, Chairman and CEO of Mission West Properties. "We believe that NASDAQ's electronic multiple market maker structure will provide our company with enhanced exposure and liquidity, while at the same time providing investors with the best prices, the fastest execution, and the lowest cost per trade. As the world's largest electronic stock market, NASDAQ promotes innovation and attracts leading growth companies from a diverse group of sectors. We are proud to be a part of NASDAQ.

About NASDAQ

NASDAQ is the largest U.S. electronic stock market. With approximately 3200 companies, it lists more companies and, on average, its systems trade more shares per day than any other U.S. market. NASDAQ is home to companies that are leaders across all areas of business including technology, retail, communications, financial services, transportation, media and biotechnology. NASDAQ is the primary market for trading NASDAQ-listed stocks. For more information about NASDAQ, visit the NASDAQ website at http://www.nasdaq.com or the NASDAQ newsroom at http://www.nasdaq.com/newsroom.

Company Profile

Mission West Properties, Inc. operates as a self-managed, self-administered and fully integrated REIT engaged in the management, leasing, marketing, development and acquisition of commercial R&D properties, primarily located in the Silicon Valley portion of the San Francisco Bay Area. Currently, the Company manages 109 properties totaling approximately 7.9 million rentable square feet, which includes approximately 854,000 rentable square feet (or 16 buildings) that are in the process of being rezoned for residential development. For additional information, please contact Investor Relations at 408-725-0700.

The matters described herein contain forward-looking statements. Such statements can be identified by the use of forward-looking terminology such as "will," "anticipate," "estimate," "expect," "intends," or similar words. Forward-looking statements involve a number of risks, uncertainties or other factors beyond the Company's control, which may cause material differences in actual results, performance or other expectations. These factors include, but are not limited to, the ability to complete acquisitions under the Berg Land Holdings Option Agreement with the Berg Group and other factors detailed in the Company's registration statements, and periodic filings with the Securities & Exchange Commission.