my guess is it has a lot to do with builders charging almost double the cost of what a normal contractor would charge. Especially when you consider they do less work as there is no demolition of tiles and removal of carpets involved.My dad closed on his home yesterday. We'll be doing flooring, garage epoxy, and window coverings in the coming month.was there no (acceptable) flooring option offered by calpac for the sierra homes? if not, can you share what flooring is your dad putting in?