Exterior
An important house in Tudor style with Scottish Baronial features, built in Llangendeirne 'black marble' limestone. Planned with the residence to the right and a long, slightly angled, service wing planned around a courtyard to the left. Steeply pitched slate roofs in graded courses behind parapets. Prominent tower near the south-west corner; otherwise the house is nearly symmetrical, with a double-gabled elevation both to south and to north. Two storeys and attic, of great height, standing on a high plinth with basement windows. Service wing to south-west with low-pitched slate roofs behind parapets.
The main block is the family house. Entrance elevation to the south, three windows, tall and deeply projecting porte cochère centrally. Ashlar masonry in thin, slightly irregularly sized courses (masonry believed to be by Daniel Mainwaring of Carmarthen). Tudor windows with mullions and transoms, curiously adapted to incorporate thin-section sashes; lower windows and entrance doors have copper glazing bars; label mouldings with everted ends. The attic windows at centre of each gable are small pointed lancets. Crow-stepped gables with moulded copings to the steps; prominent base moulding to the parapet. The porte cochère has similarly coped crenellations and a base moulding to its parapet, three tall four-centred porch arches, two smaller similar pedestrian arches at the sides of the entrance stairs, and octagonal corner turrets. Very fine gothic entrance doors and screen consisting of double doors with side lights and a fanlight over a transom, all designed to appear as a six-light heavily moulded screen when shut. Boxed folding shutters at rear. (Joinery by Armstrong and Siddon of London.) White limestone steps to entrance.Ornamental lead rainwater heads and pipes.
At the junction with the service wing stands the tower, in reinforced masonry. This rises to about 10m above the eaves of the house, and is crowned by a tall weather vane. The gables are plain-sided (without crow-steps) and have small finials; that to the east incorporates a chimney. Lancet attic windows above large lozenges, two of the latter incorporating clock faces. Two-light mullion and transom windows to south and to west overlooking the service wing.
The north and side elevations are in architectural detailing similar to that of the south elevation. The north elevation is that to the garden, serving the dining and drawing rooms: also three windows in width, but the central unit is a canted bay, continued above general roof level to give a bay window to the attic. On these three sides the lower windows have plate glass and no glazing bars. The east side elevation is of four windows: at left a two-light mullion and transom window over a four-light bay window with flanking lights; pair of two-light windows centrally; at right a two-storey bay window of five lights with flanking lights, plus an attic gable. The west side is similar but with some simplification: three two-light windows above, a four light and two two-light windows below. On the two sides there are attic gables concealed behind the parapets.
Near the join to the service wing both at south and north the masonry changes from ashlar to axe-dressed, then further out to quasi-rubble, in small courses, with ashlar dressings. The transition from house to service wing is created by a symmetrical four-window block, overlapping the tower, in a plane parallel to the main front elevation, but very slightly forward. This has paired central windows with oriels above, flanked by narrow lights. Parapet stepped at centre. These oriels have plate glass, as in the main part of the house, but the other windows have the small panes characteristic of the service wing.
The service wing proper starts with a large step forward and a change to a plane at 30º to that of the house. In this first block of the service wing nearest to the house (with the servants' hall and Steward's room centrally) there are sash windows in mullioned groups of two or four (2, 2, 4, 4, 2, 2), the ground storey windows incorporating transoms also; the sashes, as in the house itself, adapted to run behind the transoms. The two centre bays are very slightly advanced. (Similar fenestration to the internal courtyard, and in the north elevation centred on the Housekeeper's Room.) Prominent ten-stack chimney. At south the two-storey part of the service wing then changes back through 30º and terminates with a two-bay unit, the left bay being a four-centred luggage-entrance arch with a terminal gable above. This is followed by the symmetrical kitchen department: central unit of two storeys, slightly advanced, with three-light mullioned window above, five light mullion and transom window below, and coped gable. This is flanked by 1½-storey ranges with two-light through-eaves dormers above three-light mullion and transom windows. Deeply projecting eaves on corbels and concealed gutters.
At the north side the two-storey part is followed by the single-storey dairy department with a prominent canted bay window, and then the laundry department, also single-storey but with a high roof.