Allensbank

Allensbank is a building consisting of three parallel east-west ranges with linking blocks along the centerline, creating four courtyards enclosed by high perimeter walls. The main range, which contains the original guardians' boardroom, faces north and is the only part of the design that features embellishments. The original layout remains remarkably intact externally, and while there are some minor modern additions, they do not detract from the overall form.

The building is constructed from local purplish sandstone that is hammer dressed, set on a plinth of grey limestone. Limestone is also used for the casing of the two main entrance doors. The plinth has a rock-faced finish, providing a contrast in both texture and color. The masonry on the front is coursed, while the rear and in the rear and central ranges, it is generally made of uncoursed rubble. The slate roof has been relaid, and most of the door and window joinery has been replaced.

The front elevation, which faces north and offers a view across the valley to Narberth, is divided into five sections. The outer two sections are one storey high, while the inner three are two storeys. The central section is highlighted by three tall gables, which are coped and decorated with blind cross-loopholes featuring oeillets. Each of the five sections contains a range of three windows, with the upper windows adorned with Tudor label moulds. Two broad square string courses indicate the first floor level. The main doors, located in the central section, consist of vertical boards with cover strips and decorative iron hinges.

The rest of the building has a more utilitarian design, with two storeys throughout except for the southern linking block, which has an unusual roof shape with half-hipped ends that meet the central and rear ranges.

Recent additions are easily identifiable, including an external stone staircase at the west end of the rear range, which is not part of the original layout. However, the original stone staircases with wrought-iron handrails remain in place in the central range and the northern linking block.