The Low Rise section (floors 1 to 12) contains a -floorplate and the Mid Rise section (floors 14 to 22) contains a -floorplate. The highest region, the High Rise (floors 23 to 33), contains a -floorplate. The building does not have a floor numbered thirteen. The floor to ceiling height of the building is . To support the office tower, 555 Mission has a steel frame structure. The metal decks and concrete will support the office floors. Enclosing the steel structure is a glass curtain wall that has protruding glass and metal accent fins.