Alexandria Real Estate Equities, Inc. is a real estate investment trust (REIT) focused on the cluster formation. The Company is a provider of real estate, technical infrastructure services and capital to the life science industry. The clients of the Company include institutional (universities and independent not-for-profit institutions), pharmaceutical, biopharmaceutical, medical device, product, service, and translational entities, as well as government agencies. During the year ended December 31, 2008, the Company executed 141 leases for approximately 2.2 million square feet. The Company completed the redevelopment of multiple spaces at 14 properties aggregating approximately 335,000 rentable square feet. In 2008, the Company leased approximately 630,000 rentable square feet of redevelopment and development space.
As of December 31, 2008, the Company had 416 leases with a total of 347 tenants, and 79 of the 159 properties were single-tenant properties. As of December 31, 2008, the Company had 159 properties (155 properties located in ten states in the United States and four properties located in Canada) containing approximately 11.7 million rentable square feet (including spaces undergoing active redevelopment) and properties undergoing ground-up development of approximately 875,000 rentable