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. Substantial parts of the plinths of this building survived. Inside were some pits (CF215, CF235, & CF239), an internal (CF214) and some postholes.

The relationship of pits to the building was not clear; some may have predated the building whilst others may have been contemporary or later than it. This is the only place at Lion Walk where a line of early postholes can be interpreted as having clearly formed a wall in a recognisable military fashion. The positions of all these postholes are clearly secondary to the plinths so that the posts must represent either original internal partitions or later modifications to the building.<1>