Optimum Nutrition signs a long-term lease for more than 212,000 square feet

ROSEMONT, IL – January 13, 2011 - Liberty Property Trust, (NYSE:LRY), today announced that it has signed a new long-term lease with Optimum Nutrition Inc. for 212,485 square feet at 900 Bilter Road, Aurora, Illinois.

“We are very pleased to be able to offer Optimum Nutrition the distribution space they needed to support their growing business,” said Don Schoenheider, vice president and city manager, Liberty Property Trust.

The 463,636-square-foot industrial building at 900 Bilter Road is part of Liberty Business Center Aurora. The property is LEED® (Leadership in Energy and Environmental Design) Gold certified by the U.S. Green Building Council (USGBC) for its sustainable design elements. The building includes energy-reducing features such as fuel efficient heating units, energy efficient light fixtures and increased insulation. Recycled content and materials were also used in the construction of the building. Due to its sustainable design, the building is projected to perform 29% more efficiently than a standard code compliant building.

Eric Tressler, Dan Leahy and Adam Marshall of NAI Hiffman represented Liberty Property Trust in the transaction. Newmark Knight Frank Epic represented the tenant in the transaction.

About Liberty Property Trust

Liberty Property Trust owns and manages more than seven million square feet of office, flex and industrial property in the Chicago/Milwaukee Corridor, including more than eight major office and industrial parks and projects.

Liberty Property Trust (NYSE:LRY), headquartered in Malvern, PA, is dedicated to enhancing people’s lives through extraordinary work environments. The real estate investment trust (REIT) serves customers in the United States and United Kingdom through the development, acquisition, ownership and management of superior office and industrial properties. Liberty's 80 million square foot portfolio offers exceptional locations and flexible design to more than 2,000 tenants at 700 office, distribution and light manufacturing facilities. The company is a leader in the development of high performance green buildings. For more information visit www.libertyproperty.com.

General Inquiries: Donald Schoenheider, Liberty Property Trust, 847/698-8140
Media Contact: Jenni Pastusak, a.s.a.p.r., 443/944-6285