The majority of the tombs in this necropolis are "tombe a cella". This means a tomb with one or more burial chambers. They were detached or part of a row.
This kind of tomb was used for a whole family, including their freedmen and freedwomen with their heirs. The "tombe a cella" were nearly always rectangular, with a width varying between 10 and 16 Roman feet.
Inside, they all had by a fixed design, with the exception of tomb 75, built for three families, and tomb 34, probably belonging to a collegium funeraticium, a funeral association.
According to Guido Calza, the façade was made up of the following elements:
    Small bricks, regular and manufactured with care, selected on size
    and colour;
    An entrance consisting of two jambs with an architrave of travertine;
    Brick columns with capitals, made of several materials, on top;
    A marble slab with inscription, surrounded by a frame, above the entrance;
    Two small windows in one line with the inscription;
    A relief depicting the profession of the tomb owner;
    A tympanum in the top part.
This was not always the case, but many of the tombs
with burial chambers contained several of these elements.