The archaeological excavations of 2007 in the ancient city of Bylis were located in the Episcopal quarter, to the southeast of the early Christian cathedral. During the last phase of construction, the quarter, seem to have been traversed by two perpendicular axes. One of the axes (areas 12, 26 and M14) is a west-east directed passageway that runs alongside the basilica complex and assists its liturgical annexes. This is the decumanus axis of the city, which was inherited from the urban plan of the Hellenistic period, and adopted later in support of the Episcopal quarter. The road joined the cardo axis, which followed the crest of the hill, and was controlled by the fortification wall of Victorianus (architect of Emperor Justinian), built in the 6th century AD.
The second axis is the north-south passage (areas N6-P2), which passes below the fortification wall of the cardo and joins the decumanus in a large courtyard (L), formed by the flattening of previous structures. The eastern entrance to the Episcopal quarter was through a porch or a gateway of four masonry columns, followed by a portico, which was confined by the rear wall of a room (N7). During this season continued the excavation of the building K-P, where in its northern façade, so far are identified 5 long rooms (K1-K5), 4 of which emerge in the courtyard L. While the southern façade of the building consists of two room, of an almost rectangular shape (P3 and P4), which confined a closed area of oval shape (P1). Within this latter, the excavations revealed a staircase, which led to the upper floor of the building, and a number of domestic kilns.
The excavations in area K2 identified a floor level covered by a black soil layer, rich in faunal remains. It partly covered up a trapetum used for olive pressing, which abutted the southen wall of the room. In room N2, the digging revealed a wide masonry bench and several storage pithoi ends, which had their surface covered in bitumen. While in room N5, a rectangular tank for grape pressing was uncovered. The base of the tank was made of bricks bonded with white mortar, while a thick mortar layer of red colour covered its lateral sides, made of reused Hellenistic limestone blocks. A semicircular cavity was found in the northern corner of the tank, which was probably used for the extraction of the pressed products. Two entirely preserved pithoi were revealed to the north of the tank.
The discovery of the olive trapetum, grape pressing tank, the kilns as well as the storage pithoi, suggest for olive oil and wine productive and economic activities in the Episcopal quarter of the city of Bylis during Late Roman period.