Extra Space Storage Completes Roll Out of Centershift’s Store™ Enterprise

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The second largest storage operator in the U.S. finalizes roll out of the Centershift Store Enterprise solution as part of their rental management platform for the future.

SALT LAKE CITY December 6, 2012 — Centershift, the leading Internet-based software solution provider to the self-storage industry, announced today that Extra Space Storage (NYSE:EXR) has completed its roll out of Centershift’s Store Enterprise rental management software to all of its 900 plus facilities.

Extra Space decided after significant analysis to implement Centershift’s underlying technology as the foundation of its recently developed cloud-based, proprietary property management and sales system. Karl Haas Chief Operating Officer for Extra Space Storage stated “Centershift was selected because real-time access to accurate and timely data saves us money, enhances operational performance and creates a better customer experience.”

Terry Bagley, President and CEO of Centershift, commented that, “Centershift is very pleased to partner with a world class organization like Extra Space. We have several things in common, including the passion to deliver a unique product with exceptional customer service. We love clients that embrace technology to enhance their customer experience and integrate operational systems to enhance the bottom line. Extra Space Storage is one of those companies.”

About Extra Space Storage

Extra Space Storage Inc., (NYSE: EXR), headquartered in Salt Lake City, is a fully integrated, self-administered and self- managed real estate investment trust. As of September 30, 2012, the Company owned and/or operated 910 self-storage properties in 34 states, Washington, D.C. and Puerto Rico. The Company’s properties comprise approximately 610,000 units and approximately 66.5 million square feet of rentable storage space offering customers conveniently located and secure storage solutions, including business storage. Extra Space Storage is the second-largest owner and/or operator of self-storage properties and is the largest self-storage management company in the United States. For more information, visit www.extraspace.com. For more information on the Extra Space Storage’s third-party management program, Extra Space ManagementPlus,

visit www.extraspace.com/ManagementPlus.