Building a high rise skyscraper can take up to 4 years from start to finish once construction of the high rise begins.
It takes around a year to build 187 feet of the high rise plus all the time it takes to lay the foundation, pour the concrete, install rebar, windows etc.
But with all the workers working on it it takes around 4 to 5 years to complete the construction of a high rise and be ready for occupancy.