In architecture, construction, engineering and real estate development the word building may refer to one of the following:
1. Any man-made structure used or intended for supporting or sheltering any use or continuous occupancy, or 2. An act of construction.
To differentiate buildings and other structures that are not intended for continuous human occupancy, the latter are called nonbuilding structures. Structural height in technical usage is the height to the highest architectural detail on building from street-level. Depending on how they are classified, spires and masts may or may not be included in this height. Spires and masts used as antennas are not generally included.