The area investigated in 2012 was probably occupied by an insula, constituted by a complex residential structure. In its earliest phases the building was made up of a series of rooms, aligned along the southern edge of the triangular piazza and parallel to the south side of the Capitoline. On their south side, there was an open space, probably a garden. The materials in context date this first building phase to the end of the 3rd century-beginning of the 2nd century B.C.

During this campaign, the latest phase of the complex was identified, dating to between the end of the 1st century B.C. and the second half of the 1st century A.D.

The open area on the south side was occupied by new rooms; further transformations reorganised the spaces so that the residential complex had two rooms on the west side separated by a central open space of about 2.60 × 3.50 m.

The building’s western perimeter wall had two facings in opus reticulatum and opus vittatum mixtum quoining with alternating courses of small tufa parallelepipeds and brick. The main entrance to the building had a semi-pilaster in opus vittatum on each side and was probably surmounted by an architrave. This door was situated on the west side facing on to the road, aligned south-west/north-east and leading to the acropolis.

The building does not seem to have undergone any substantial transformations during its long life, from the end of the 2nd to the 4th century A.D., when a part of the structures collapsed following an earthquake. During the 5th century, several beaten surfaces were created on top of the collapsed building in oprder to level the area. Three burials were put into these levels on the west side; these were “a cassa” tombs in tufa blocks, with the skeleton in a supine position and without grave goods.