Buildings 10, 11 and 13 are low basements composed of a single body, while Buildings 9 and 12 have two staggered bodies. On the west façade of each there is a single staircase.

Building 12: It has unique characteristics. It is a small rectangular base with tucked corners and rests on a low plinth that supports two bodies with sloping walls. It also has a staircase on each façade; the one on the west side is distinguished by the existence of alfardas and a small landing that divides it into two sections.