John Honeyman, 1872; additions and fittings by John Keppie and C R Mackintosh (Honeyman and Keppie), 1892 on 2-storey Renaissance mansion with 3-window entrance front and 4-window garden front towards Bellahouston Park. Ashlar (partly painted), chanelled rustication to ground floor. Hipped slate roofs, moulded cornice, left hand tripartite 1st floor, splayed bay ground floor, shouldered architraves linked to 1st floor sill band. Central doorpiece with coupled Ionic columns and single pilasters, entablature with balustrade to 1st floor window, arched entrance with architrave, carved key block and flanking oval oculi. Lower link building to servants' wing runs left, tall balustraded parapet, arched ground floor windows; pavilion and block with coat of arms over 2 storey splayed bay with art nouveau glazing. Garden front has details as before, plus 2 storey splayed bay with Ionic and Corinithian colonnettes, carved aprons with the date 1872; enriched pediment above main cornice. 1 storey billiard room advanced at right end, winter garden with steep glazed roof behind.
Sumptuous interiors with original neo-classical detailing to ceilings, enriched cornices, embossed frieze, painted dados, window splays and 6-panel doors, inlaid and tiled floors by Honeyman; outstanding entrance hall, staircase and first floor corridors with gilded detailing, marbled walls (rusticated with lion mask frieze on staircase, marbled Corinthian columns to entrance and 1st floor screens, guilloche detail to architraves. Exceptional fittings added by keppie and Mackintosh include art nouveau overdoors in hall with tulip friezes and open pediments; fitted library cases incorporating swelling colonnettes, sinuous shelving etc; elaborate wood fittings in drawing room; mahogany organ case (dated 1897) in the music room with characteristic Mackintosh finial matched by elaborate chimneypiece at oppostie end of room. Other remarkable fittings include art deco light fittings by Lalique, art deco mirror fireplaces, bathroom fittings, stained glass windows etc.