/ under construction / topped out 150m. "Four Leaf Towers 2". A b "Houston (under construction / topped out. State of, texas, is the site of 48 completed high-rises over 427 feet (130 m 36 of which stand taller than 492 feet (150 m). Any buildings that have been topped out but are not completed are also included. This building, rising 6 floors, is often regarded as the first skyscraper in Houston; it was demolished in 1951 to allow for the construction of a more modern building of the same name, which was in turn replaced by another, 14-floor-tall high-rise that also kept. Retrieved July 29, 2017. Retrieved July 31, 2017. A b "Heritage Plaza". Retrieved July 16, 2017. References edit General Specific a b "Houston (completed.