In the late 17th century, at some time between 1660 and 1680 the floor level appears to have been raised across the whole house, thus forming one complete level ground floor with the creation of a common or service hall with a low basement area and potentially the creation of the stair hall. In response to this work, the ceiling heights also appear to have been raised some 0.40–0.50 metres (1'4" to 1'8") on the ground floor. The interior walls of the house at this time would have all been plastered with no wooden wall panelling. The earliest oak wall panelling was most probably added in the early to mid-18th century, with pine panelling added later.