Exterior
The building is approximately square on plan, and of 3 storeys, attics and cellar. The earlier part of C17 or earlier date occupies the NE side, and is built of slate stone, faced in the earlier C18 with brick, made on the estate. The enlargement to its rear of c1700 is constructed in a larger gauge rubble stone, with stone lintels to openings, the whole then covered with a hipped slate roof with a central valley. The NE facade is in an urbane Palladian style, of brick, fired on the estate at Bodowen farm, with stone flush quoins and sill bands, and consisting of 7 window bays, the centre three defined by thin pilasters, originally rendered, supporting a stone pediment containing the mantled arms of Bulkeley. Twelve-pane sash windows are set near the front of the openings, which have rubbed brick flat lintels and a centre keystone. The attic floor has similar but 9-pane single sash windows in similar openings. Dentilled cornice and one small round headed sash dormer with supporting scrolls each side, appears each side of the pediment. The elevation is of considerable sophistication in its restrained simplicity, a better design than the lost Ynysymaengwyn or Bryngwyn Hall. The ground floor was, in 1858, enclosed within a single storey brick portico extending to the full width. Stone pilasters supporting a continuous Tuscan entablature, the pilasters gathered at the centre to frame the entrance door and 12-pane sashes each side. The outer bays have brick exedrae surmounted by a coved stone half-shell connected by stone bands. A series of ball finials is mounted above the cornice, many renewed. The doorcase is of stone, with a moulded eared architrave rising to a pulvinated frieze and cornice. Arms of Wynne suspended at an angle above. Pair of part-glazed timber doors.
The SE elevation is of stone, probably once rendered. The earlier right hand end is now of 2 window bays but is likely to have been wider as the joint with the added section is irregular and suggests the original building may have been more than one room wide. Its length along the NE facade is unclear. The windows were repositioned when the rear addition was made, c1700. They are now 12-pane sashes with stone lintels, rebuilt in the late C18, but two French windows to the ground floor open to the gardens. The addition, made in the late C17-early C18, is of 3 window bays, also with later 12-pane sashes with thin glazing bars to the upper floors, 8-pane to the attic level, and three pairs of French windows to the ground floor. Two round-headed dormers similar to those of the NE front, light the roof space.
The NW facade is also of heavy rubble, probably derived from the quarry adjoining the NW driveway. A central 28-pane sash stair window, three windows to the left and 2 to the right at first floor level, irregularly placed. A single storey flat roofed sun lounge was added 1999. The rear elevation shows no difference in construction between the earlier and later builds. 9- and 12-pane sash windows and a long rear range for domestic offices, with the roof stepping down in 3 stages, each with a gable chimney stack. This now contains the estate office in the end bay.