I see we're 4 pages in but nobody has mentioned another effective tool when you are a super pissed off customer and that is:
http://www.bbb.org/search/?type=name...&codeType=YPPA
When I went this route, I received attention and resolution to my problems. I would do this in addition to the consumer watch. Looks like they currently have an A+ rating. Geez... would suck to lose that, or have your complaint added to the ones there.
At some point homebuilders need to actually build homes that don't fall apart within a couple years. So ridiculous.