sentences:  In about 1330 an L-shaped domestic 'hall house' owned by John Page, was built on the southern part of the site with an undercroft and an entrance on the south side from Old Barge Yard.In about 1427 Robert Toppes, a Norwich merchant, re-developed the site as a commercial complex.He built his first floor trading hall on top of part of the 14th century domestic hall house and on top of the existing boundary wall and brick arch.