The Thurgood Marshall Courthouse is listed on the National Register of Historic places. This 33-story 718,180 sq. ft. building is the largest courthouse in the United States, containing twenty-three courtrooms, forty-four judges’ chambers and court-related office spaces. The building is to be renovated at a cost of $169M by the GSA. AG is providing comprehensive HVAC, electrical, plumbing and fire protection design and construction administration services. AGCE is working with Beyer Blinder Belle, Davis Brody Bond and Flack & Kurtz. The work includes bulk demolition package and new design. The challenges are to modernize the facility with no/least disturbance to historical components such as ornately carved ceiling of the Judge’s chambers, libraries, public assembly areas and more. The MEP systems are to be designed following LEED (Leadership & Energy & Environmental Design).