The four-storey[2] castle is small, with thick walls which are constructed in the lower courses of large boulders. It has rounded corners, and all save one of the gables have angle turrets. There is a semicircular stair tower in the re-entrant angle,[1] with an ashlar cap house.[3] The main entrance is beside the stair tower. There was once a parapet on the west side of the wing.[1] There is corbelling at the top.[2] The wing is five storeys high.[3]
Internally, the basement has three vaulted rooms, including the kitchen, which has a wide arched fireplace. The hall takes up the whole of the first floor. This has a fine fireplace, and a store sink and drain. Above the fireplace is a so-called “Laird's Lug”, a secret listening chamber allowing the Laird to overhear conversations in the Great Hall. The bedrooms were on the higher floors.[1]