The Commissioners of Public Works commissioned this building to provide office accommodation for the Department of Finance to link into the adjacent Government Buildings complex. The Project incorporated The Billets, a 1912 Protected Structure.

The fundamental concept of building is rooted in its immediate urban context, relating to St. Stephen's Green, the Hugeunot Cemetery and the 18th century Georgian streetscape.

The street line is maintained by a crafted bronze railing and gate and by cantilevering the grand staircase space overhead. A set-back is used to form an area which gives light to the lower ground level and allows the formation of an entrance threshold.

The facade was developed to form a deep stone and glass screen. Windows integrate 'nostrils' which breaths in natural air, which is distributed into office spaces and is drawn into the six chimneys placed centrally in the plan. These chimneys continue the tradition of the particular roofscape of Dublin. The main staircase, positioned at the front of the building, acts as a screen to the south sun and as an acoustic buffer to city traffic. Circulation is positioned at the perimeter of the building, with offices placed away from the facades.

The architectural challenge for The Billets, a long, two-storey 'mews' type building -was to incorporate new accommodation, within the character of the existing spaces.