[2] The rubble-built quadrangular castle measures 162.5 by 126.7 feet (49.5 by 38.6 m) and runs along an axis from north-east to south-west.

The residence occupies the north-eastern portion of the interior and there are remnants of a domestic range against the north-western wall.

Two of these on the south-eastern side project into the courtyard, flanking the doorway, together with the adjacent stair towers.

The building is generally complete up to the level of the vaulted ground floor, but only some of the walls reach a height of 14 feet (4.3 m).

[2] There are no other documentary records to the building and it appears that construction apparently ceased on Sir John's death.