A high-rise's a tall building or structure. Normally, the function of the building's added, for example high-rise apartment building or high-rise offices. Compare: low-rise High-rise buildings became possible with the invention of the elevator (lift) and cheaper, more abundant building materials. Buildings between and 491 feet (150 m) high are, by some standards, considered high-rises. Buildings taller than 492 feet (150 m) are classified as skyscrapers. The average height of a level's around… (More on High-rise)