The new building was designed, initially by Joseph Étienne, and later by Richard-François Bonfin, in the neoclassical style, built in ashlar stone, and was completed in 1778.[2][3][4] The layout involved a three-storey main building at the back of a courtyard, with single-storey wings on either side and an arcaded screen at the front.All bays were flanked by Ionic order pilasters supporting an entablature, a modillioned cornice and a balustraded parapet.[8] In the late 1870s, two new wings, intended to accommodate the Musée des Beaux-Arts de Bordeaux, were constructed behind the main building to a design by Charles Burguet.[9] The rebuilding after the fire involved a new council chamber, completed in 1889, which was designed in a style characteristic of official architecture during the Third Republic.