MILWAUKEE, October 3, 2007 – Liberty Property Trust (NYSE:LRY), which owns and manages more than 2.5 million square feet of office and industrial space in Wisconsin, today announced that it has received two awards for sustainable development projects located in the Wisconsin region, one from the National Association of Industrial and Office Properties (NAIOP) and the other from the State of Wisconsin.

"September was a very gratifying month for our team," said Neal Driscoll, director of leasing and development for Liberty in Wisconsin. "Both of these projects have exceeded our expectations. We always knew they would be important to our tenants and our company, but to see how the real estate community at large values them is very exciting."

JohnsonDiversey Distribution Center Receives "Green Development Award"

The 552,000 square foot warehouse and distribution center Liberty developed for JohnsonDiversey Inc. (JDI) in Sturtevant has been awarded NAIOP's third annual "Green Development Award" in the build-to-suit category. The building is the largest green distribution center in the United States. Designed to achieve LEED (Leadership in Energy & Environmental Design) Silver certification, it is expected to receive Gold certification in the coming months.

According to Thomas J. Bisaquino, NAIOP president, winning projects "symbolize the innovation, creativity and environmentally friendly approach that (NAIOP) members are employing to develop model properties."

The distribution center is located on 38 acres of land in Renaissance Business Park located near Racine. It features:

• A white thermoplastic polyolefin (TPO) roof to reduce solar heat gain
• Reduced water use by 30% beyond State of Wisconsin building code
• Reduce energy use by more than 40% beyond State of Wisconsin building code
• Open space for vegetation – with 70% of the project site using native plants
• Low-emitting materials for construction, including interior paints, adhesives, sealants and carpeting to maintain air quality
• Various lighting systems using fluorescent lights and occupancy sensors
• Significant waste recycling program that recycled 941 of 964 tons of waste during construction
• Building materials featured more than 20 percent recycled content.

245 Plaza Wins "Special Citation" for Sustainable Energy Efficiency

In September, Liberty was presented with a Sustainable Energy & Efficiency (SE2) Leadership Award for its renovation of 245 Plaza in Brookfield. The project was the first LEED-EB (existing building) certified building in the state.

Among the building's green features are a drip irrigation system designed to conserve water; thermal performance enhancing roof insulation; high-efficiency HVAC system; low-VOC emitting paints, carpeting and floor tiles that provide higher air quality; low flow, aerated faucets and waterless urinals that save water; special tempered windows and the use of more than 70% native plantings on the property, among other elements. In total, 90% of the materials removed from this building were recycled.

For the last four years, six professional organizations and associations and the energy efficiency program in Wisconsin (AIA Wisconsin, Energy Center of Wisconsin, ASHRAE – Wisconsin Section, Illuminating Engineering Society – Milwaukee Section, Wisconsin Green Building Alliance, IFMA – Wisconsin Section, and Focus on Energy) have worked together to create the Sustainable Energy & Efficiency (SE2) Leadership Award Program, which recognizes leadership in energy efficient and sustainable design, construction and operation of Wisconsin commercial and non-residential buildings.

The award was presented at the 2007 Greening the Heartland/SE2 Conference in mid-September and accepted by Liberty and general contractor, Berghammer Construction Corp.

Liberty and LEED

Liberty has developed three LEED certified buildings in Wisconsin. In addition to the JohnsonDiversey distribution center and 245 Plaza, the company recently completed development of a new office building for the Department of Defense in Liberty at Park Place in Milwaukee, which also received a LEED Silver certification. The company recently announced plans to develop two more sustainable buildings at Liberty Corporate Preserve at Oak Creek.

Nationwide, Liberty has more than four million square feet of LEED certified space completed and in development, including the 58-story Comcast Center office tower in Philadelphia, which will open in April of 2008.

About Liberty Property Trust

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 68 million square foot portfolio offers exceptional locations and flexible design to more than 2,100 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.

Contact:
Neal Driscoll
Liberty Property Trust
414/979-0222
Robbie Tarpley Raffish
a.s.a.p.r., 410/883-2000