Notley Abbey was originally built based on the medieval architecture (12th and 13th century) popular during the era of its construction. The stone-built main residence is L-shaped and two-storied throughout.
The reconstruction of Notley Abbey in 1890 introduced architecture more reminiscent of the late medieval period, specifically in the replacement of Georgian casement windows with those of the Tudor form. When Notley Abbey was excavated in 1937, only the abbot's house and portions of the western and southern claustral buildings were relatively intact.