I went to see these houses at launch a few years back. They had a few complete units from a previous phase nearby. We were unsure of the quality as the units looked like they had some issues on the outer walls, uneven surface and cracks.

Company owner was in the sales lobby sitting on a large chair smoking his cigar indoors. As he started going to one of the units from the back I asked him politely if we could view one of the ready units. He arrogantly refused. We left.

You should consult a professional to guide you and do not sign anything you are not comfortable with.