One of six buildings excavated at Lion Walk laid out in a fashion characteristic of Roman legionary barracks. The material used to construct the superstructure of the principal walls was sandy daub laid in the form of sub-dried blocks. These were placed over timber ground-plates which rested along the tops of the mortared plinths. Inside this building were the remains of three daub walls (CF217, CF220, and CF221). On the north side lay a small hearth in the form of a tegula.

There were several pits (CF200, CF201 & CF234) and two post-holes (CF205 & CF206). The building is thought to be a centurion’s quarters. It was destroyed by fire c.AD 60-61 and therefore must have survived the transition from fortress into town. The internal arrangements, where these could be detected, seemed to have been of one phase so that the centurion's quarters appear to have been reused in the colony without modification.<1>