If I remember correctly, from what I read in the paper, the company will pay their taxes for like a year, which gives the family enough time to get settled and then start to save up. Now I'm not sure how the whole taxes work, since I don't own my home yet.
Okay I just read the article that was in yesterdays AZ Republic about the family, the construction began 2/6 and on 2/11 the family got to see their new home. I would suggest azcentral.com and do a search for articles but you have to pay to read them, which I'm cheap and refuse to do.
But here is a link to one article I found from a competition newspaper in the valley:
http://www.eastvalleytribune.com/?sty=36158
here's another one
http://www.eastvalleytribune.com/index.php?sty=37949
and here's one more with a bit more information on the home builder and the family
http://biz.yahoo.com/prnews/050210/flth031_1.html
(FYI to my sisters out there, mom did stay at RMH. Talk about really holding this family to a special place in my heart)