This reconstuction of Gresham Castle is entirely speculative and is based on evidence from the Paston Letters and other documents of the time. No archaeological evidence is available other than the standing remains of the walls. The documentary evidence shows that the house was a timber framed building and resembled a typical four bay construction of the period with a central hall and chambers either side. It is unclear whether the walls and towers belong to the fortifications made by Sir Edmund Bacon or are the result of a major rebuild by the Pastons following the siege of 1448.