Here is an excerpt from the IRS website for the documentation needed to claim the First Time Home Buyer Credit using Form 5405:

Q. What do I have to attach to my 2009 or 2010 return to prove that I bought a new home in order to claim the credit?

A. If you claim the credit on a 2009 (or later) return, you must attach a copy of your settlement statement. For most homebuyers, this will be a properly executed Form HUD-1, Settlement Statement (U.S. Department of Housing and Urban Development) that includes:

* Names and signatures (if available) of all parties involved,
* Property address,
* Purchase price, and
* Date of purchase.

If you purchased a mobile home and do not have a settlement statement, you should attach a copy of your executed retail sales contract showing all parties’ names and signatures, the property address, the purchase price and the date of purchase.

If you are claiming the credit for a newly constructed home and you do not have an executed settlement statement, you should attach a copy of your certificate of occupancy showing the name of the taxpayer, the property address, and the date of the certificate.

Source: IRS Website at: http://www.irs.gov/newsroom/article/0,,id=218698,00.html

Thanks for your comments and questions.

Tracy Z