SAN MATEO, CA--(MARKET WIRE)--Aug 19, 2008 -- Glenborough, LLC, a San Mateo, CA real estate investment and management company specializing in office properties, is pleased to announce that nearly a dozen more of its California properties have earned the prestigious ENERGY STAR label from the United States Environmental Protection Agency (EPA).

The rigorous ENERGY STAR commercial building assessment process rates the energy performance of commercial and industrial facilities on a 1-100 scale. Those that achieve a score of 75 or higher are eligible to display the ENERGY STAR label, indicating that they are among the top 25% of facilities in the country for energy performance. Commercial buildings that have earned the ENERGY STAR use on average 35% less energy than typical similar buildings and generate one-third less carbon dioxide -- and distinguish their developers, managers and tenants as organizations that are working to reduce global warming and its impacts.

Glenborough's newly labeled ENERGY STAR properties in the San Francisco CBD (scores in parentheses) include 188 Embarcadero (81), 201 California (86) and 60 Spear (77). 3330 Cahuenga Boulevard in Los Angeles joined the list with an ENERGY STAR rating of 83. Centerstone I and III in Orange County weighed in with 78 scores -- with Centerstone IV earning an impressive 89 score.

Four of Glenborough's San Bernardino properties also earned the distinction, including One Vanderbilt (75), and Vanderbilt Plaza (91). Two other San Bernardino buildings deserve special note -- Three Carnegie Plaza with an impressive 96 rating and Two Parkside with a score of 95.

Glenborough believes that good environmental stewardship is everybody's business, and is proud to recognize the important role played by the engineers, builders, designers and building managers whose dedication to energy savings and sustainable development have made these achievements possible. For more information about Glenborough's ENERGY STAR efforts and other green building initiatives, visit www.glenborough.com.

About Glenborough, LLC

Glenborough, LLC is a real estate investment and management company with 30 years of industry experience. Formerly a NYSE listed real estate investment trust, the company returned to its private roots in 2006. Glenborough is focused on the acquisition, management, leasing and development of high quality office properties and currently has over $2.8 billon of assets under management, including core, value add and development properties. The company's primary investment markets are Northern California, Southern California, Denver and Washington, D.C. For further information, visit www.glenborough.com.

     Contact:
     Andrew Batinovich
     President and CEO
     Phone: 650.343.9300
     e-mail: Email Contact
      
     Glenborough, LLC
     400 South El Camino Real
     San Mateo, CA  94402-1708