Τhe scope of this project is the interior rearrangement and addition of office spaces in an existing office building located in Νea Κifissia. Τhe building’s total area is 5120m2. Various civil engineering works were performed at the existing building, such as: reinforcement of the bearing structure, change of facades and interior rearrangement. A new building was constructed and unified with the existing one, creating modern and functional office spaces. The new building encompasses two underground levels, a ground floor, and a mezzanine. The E/M installations of the building meet the strictest requirements in state-of-the-art equipment.