Springhill House, Portland Road, Kilmarnock

Springhill House is a 2-storey, 3-bay classical mansion house dating from around 1840, raised on a basement and extended to the rear. It is built in painted ashlar with painted dressings, and features giant order angle pilasters. A boldly projecting cornice and blocking course with a moulded coping run along the top of the building.

The east, or principal, elevation features squared piers with flat, moulded caps adjoining a balustraded handrail, which leads to a flight of 8 ashlar steps up to the 3-bay entrance front. A projecting triangular pedimented portico is centred above, with piers that frame Ionic columns in antis. The central recessed doorway has a bracketed cornice and narrow flanking lights. Tripartite windows are present in the outer bays, each with narrow outer lights and a bracketed cornice. The central window on the first floor is also tripartite, with narrow lights on either side, mirroring the basement windows.

The south elevation consists of three wide bays divided by pilasters. Outer basement and ground floor windows are canted, with two windows above on the first floor. The extreme right window is now blind. A tripartite window is found centrally on both the ground and first floors; the basement tripartite window has a now-blind central light, and a doorway has been cut into the pilaster to the right.

The west, or rear, elevation forms an L-shape. A large, 1-and-a-half-storey tripartite window is present on the central stairway, with a single-storey flat-roofed extension below, in the re-entrant angle. A window also appears to the left return. Single windows are present in the left bay at each floor of the main house. The side and rear of the south addition extend across all floors of the right bay, featuring a gable with a tripartite window to the ground floor and a single window to the first floor. A single-bay extension adjoins the left, with a door at basement level and a small window on the first floor; this is blind to the left return. A modern 2-storey, 3-bay gabled stone and harled extension adjoins the house to the northwest, connected by a modern 2-storey, 2-bay flat-roofed link.

The north elevation has four regularly placed bays over two storeys and a basement. Bracketed cornices are found on the ground floor, with painted margins on the first floor and a plain appearance to the basement.

The windows are timber sash and case, with 12 panes; some are 4-pane to the tripartite windows, while bay windows have 8 and 16 panes. Some later 2-pane sash and case windows are present, along with modern casements with opening top hoppers to the modern rear extension. The shallow piended grey slate roof is concealed behind a parapet. Two pairs of cruciform painted ashlar stacks rise from the building, featuring projecting corniced neck copes and tall cans, and a smaller rectangular painted ashlar stack with paired cans is located on the later extension. Buff painted cast-iron rainwater goods are found on the main house, with gutters concealed behind the parapet. Cast-iron and plastic rainwater goods are present on the later extension, along with zinc water and heating vents.

Inside, the entrance hallway is notable for its fluted columns and pilasters with Corinthian capitals, which support ornate cornices and beams. There are panelled ceiling mouldings, timber panelled doors with architraved surrounds, plaster ceiling roses, timber panelled window surrounds with shutters and boxed valances, and some early fire surrounds. The later additions to the rear have modern interiors.