Allensbank

The building consists of three parallel E/W ranges with linking blocks on the centreline. The layout creates four courtyards which are closed by high perimeter walls. The main range containing the original guardians' boardroom faces N, and is the only part of the design to be embellished. The original layout survives externally with remarkable completeness and the presence of some minor modern additions does not obscure the overall form.

The masonry is a local purplish coloured sandstone, hammer dressed, on a plinth of grey limestone. Limestone is also used as the casing of the two main entrance doors. The plinth is rock-faced to create a contrast of texture as well as colour. The masonry at front is coursed, but at rear and in the rear and central ranges it is generally uncoursed rubble. The slate roof has been relaid and the door and window joinery has mostly been replaced.

The front elevation, facing N with a view across the valley to Narberth, is in five parts. The outer two parts are of one storey, the inner three of two storeys. The central part is emphasised with three tall gables, coped and decorated with blind cross-loopholes with oeillets. Each of the five parts is a range of three windows. The upper windows have Tudor label moulds. Two broad square string courses mark the first floor level. The main doors, in the centre part, are of vertical boards with cover strips and sham iron hinges.

The remainder of the building is of a utilitarian design. It is all of two storeys apart from the S linking block. This part has an unusual roof form with half-hipped ends abutting the central and rear ranges.

Recent additions are easily distinguished. An external stone staircase at the W end of the rear range is also an addition to the original layout.

In the central range and in the north linking block the original stone staicases with wrought-iron handrails remain in place.