When first built, it comprised a basement with two floors above, providing views over the extensive parkland to the west and south. In the 14th century the tower was heightened, another floor being added. A third floor was added in the 16th century, and at the same time new windows and fireplaces were inserted. The rooms were probably divided subdivided into at least two chambers per floor.

In the 14th century the tower was heightened, another floor being added. A third floor was added in the 16th century, and at the same time new windows and fireplaces were inserted. A latrine was inserted on each floor in the southern corner. A doorway in the west corner led onto the curtain wall at the second-floor level. The third floor was added in the 16th century, and at the same time new windows and fireplaces were inserted. The fireplaces blocking the 14th century windows in the southwest wall.