The building at 124 WEST CASTELLANO DRIVE serves as the offices of Robert Navarro and Associates, Engineering Inc. and the structure was designed by the firm. The structure consists of a two story building, which utilized 6 foot wide concrete pan joists system, with same depth support beams at the second floor level. The support columns are typical 18 inch square columns, except for the 24 inch diameter, two-story high columns at the main entrance, which extend from the foundation to the roof. The roof consists of structural steel framing with steel beams and open web steel joists.