HOUSTON - (BUSINESS WIRE) - April 6, 2006 - Thomas Properties Group, Inc. (Nasdaq:TPGI) has signed INTEC Engineering to an eight-year lease for 81,765 square feet at Intercontinental Center, retaining the tenancy of the headquarters of this international leader in deepwater pipeline and production system engineering for the oil and gas industry.

"INTEC is an innovative international leader in complex engineering systems in one of Houston's most important industries," noted James T. Thomas, CEO, Thomas Properties. "As a premier tenant, INTEC's decision to stay at Intercontinental Center reinforces the center's position as a desirable headquarters facility."

Intercontinental Center at 15600 JFK Boulevard is just south of Bush International Airport, well-located for international companies like INTEC whose executives travel frequently. INTEC has maintained its headquarters at Intercontinental Center since January 1995.

"We have found Intercontinental Center to be an exceptional location for INTEC's headquarters because our staff travels worldwide, serving customers in every offshore arena," said Bruce Crager, CEO of INTEC Engineering. "Further, we are excited about many improvements that Thomas Properties is planning to the building to better serve our employees."

Founded in Houston in 1984, INTEC is known for its ability to handle the most challenging marine hydrocarbon development projects in the frontier and deepwater areas of the world. INTEC has designed subsea production and pipeline systems in water depths once thought impossible to reach, in locations as diverse as the Black Sea, Mediterranean Sea, the Arctic Ocean, the Gulf of Mexico, offshore West Africa, offshore Brazil and the South China Sea.

Thomas Properties Group acquired the nine-story, 195,000-square-foot Intercontinental Center in August 2005 as part of a 2.5-million-square-foot acquisition of signature Houston office properties through a joint venture with the California State Teachers' Retirement System. The building was renovated in 1991 with extensive upgrades to the lobby and entrances. Renowned local granite sculptor Jesus Morales created original sculptures that enhance the entry plaza. Visitors also may view a lobby display that showcases the creative process behind the sculptures. Thomas Properties Group plans to make additional investments in the building's systems.

Earlier this year, Thomas Properties Group announced a collaboration with Houston-based Colvill Office Properties to lease and market its Houston properties. Chip Colvill, in conjunction with David Baker of Transwestern Commercial Services, completed the INTEC leasing transaction on behalf of Thomas Properties Group. Steve Hesse, Clare Flesher and Mark Pillsbury of CB Richard Ellis represented INTEC.

"Houston is a market that we have identified as a high priority target and we are actively seeking to grow our portfolio through additional acquisitions," said John Sischo, executive vice president, Thomas Properties Group.

Thomas Properties' Houston portfolio also includes the 45-story, 959,466- square-foot San Felipe Plaza, 25-story, 574,216-square-foot 2500 CityWest and Brookhollow Central I-III, a three-building complex totaling 797,971 square feet.

About Thomas Properties Group, Inc.

Thomas Properties Group, Inc., based in Los Angeles, is a full-service real estate company that owns, acquires, develops and manages office, retail and multi-family properties throughout the United States. The company has four primary areas of focus: property operations, property acquisitions, property development and redevelopment, and investment management. The company seeks to capitalize on opportunities for above-average risk-adjusted investment returns from real estate ownership, while managing the volatility associated with the real estate industry through joint-venture ownership structures. For more information on Thomas Properties Group, Inc., visit www.tpgre.com.

Forward-Looking Statements
Statements made in this press release that are not historical may contain forward-looking statements. Although TPGI believes the expectations reflected in any forward-looking statements are based on reasonable assumptions, these statements are subject to numerous risks and uncertainties. Factors that could cause actual results to differ materially from TPGI's expectations include actual and perceived trends in various national and economic conditions that affect global and regional markets for commercial real estate services, including interest rates, the availability of credit to finance commercial real estate transactions, and the impact of tax laws affecting real estate. For a discussion of some of the factors that may cause our results to differ from management's expectations, see the information under the captions "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations - Factors That May Influence Future Results of Operations" in our 10- K for the year ended December 31, 2005, which has been filed with the SEC. TPGI disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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