There are pros and cons to pre-construction, of course, but the attached worksheet provides an overview of the differences between pre-construction and resale. It is notable that pre-construction properties allow a buyer to use time to their advantage since the deposits are done in installments through the course of construction. However, there are possible disadvantages that need to be understood in order to make an informed decision.
I would be more than happy to go into further detail about pre-construction properties and what they have to offer.