Winston Towers 400 is an existing 24-story high-rise at 231 174th Street, Sunny Isles Beach, Florida. The building was originally constructed with Type I construction. There is no 13th floor. The occupancy of this building, as classified in the Florida Fire Prevention Code, is an existing apartment occupancy with mixed uses. The basement includes storage rooms, trash rooms, and mechanical rooms. Level 1 includes lobby, auditorium, gym, offices, apartment units, and trash rooms. Levels 2 through 24 are apartment units, mechanical rooms, and laundry rooms.

The building is served by four enclosed exit stairways and five elevator shafts.