IBI Group – Gruzen Samton and its consultant team provided the District of Columbia with a full range of interior design and A/E services for the interior renovation of this historic District Building. The building will once again be the seat of District government housing the mayor, deputy mayors, city council, and administrative offices. The project encompasses 149,000 rentable square feet. The exterior and interior of the building were completely renovated and upgraded. Building infrastructure was modernized and a major infill element was added to the building.