Late medieval cellar discovered during excavations at Culver Street between 1981-2 and 1984-5.

77 East Hill was surveyed by Richard Shackle in 1994 during renovations and conversion (to a café with two flats above). The upper floor was substantially intact, apparently an 18th century warehouse made up of reused, some substantial, medieval timbers. The ground floor had been totally replaced.

Possible Bronze Age activity was revealed to the north of the excavation area, in the form of two ditches and small pits/post-holes, and several tree throws, probably later medieval in date and probably relating to Birch Park, were defined in advance of the construction of a water pipeline in 2011.

Early post-medieval building evidenced by sleeper wall, internal clay floor, and external gravel yard, recorded during excavations in 1989-90.

12th century or earlier origin, with Roman walls for foundations, demolished in 1955.

11th century Augustinian Priory of St Botolph, located on the south-facing slope of a small valley outside the town's south (-east) gateway. It was preceded by an earlier church, which was served by a community of secular canons who chose to adopt the Rule of St Augustine. The church was refounded during the late 1090s as a house of Augustinian canons and was the first such foundation in the country. The priory church, built in the 12th century (and presumably finished by the time of its dedication in 1177) survives above ground, and there are also below-ground remains of cloistral buildings. The west front contains the traces of the earliest major round window in England, c.1150. The extent of the precinct has not been accurately established.

The east end of the church of the Crouched Friars was defined during a watching brief and excavation in advance of redevelopment at 38-42 Crouch Street, Colchester, on the site of the former Crouched Friars friary. The investigations demonstrated that Colchester Building 181, excavated to the west of this site in 1988 (ECC380), is part of the west end and cloisters of the same church. The central tower and cruciform plan could be early medieval, and it is presumed that this church is contemporary with the first documentary reference to the presence of the Crouched Friars here in AD 1251 (although there is no archaeological evidence to directly support this contention).

Group of pits and post-holes (some of which were unexcavated, and all only partially defined) defined by trial-trenched evaluation (Trenches 3 and 4) in 2010-11 at the Garrison Officers Club, outside of the abbey church but several cutting the robber (foundation) trench of the church (MCC3062).

Bourne Mill, a late Elizabethan building built in 1591, probably as a fishing lodge.

Possibly pre-Norman in origin.