The buildings throughout the estate date from the pre-18th century through the 21st century and are grouped in two squares, with the remainder arranged around the gardens.
The Hall and Chapel occupy the original site of the mediaeval manor house of the de Greys and their chapel.
The present Gray’s Inn Square was formerly two smaller courts, Chapel Court and Coney Court, separated by a range of buildings; this was demolished in the early 17th century and replaced with Gray’s Inn Square. South Square was formerly known as Holborn Court.
The two northern terraces of the Raymond Buildings and Verulam Buildings were both constructed on former garden land in the early 19th century. Field Court runs along the southern boundary of the Walks. Its western end was once closed in by Page’s Buildings, a range of tenements demolished in the late 19th century that marked the former division between the grounds of the Inn and those of Warwick House. No structural trace remains of this, but the site of the house is now occupied by Warwick Place, and the building is currently used by the City Junior School.
The Inn was badly damaged by bombing during the Second World War, and the post-war buildings are a result of that damage, with rebuilding taking place in the late 1950s. Most of the buildings consist of offices over three or four floors, with residential and overnight accommodation primarily located on the top floors.