Here is a link to the IRS explanation of the tax credit.
http://www.irs.gov/newsroom/article/0,,id=206291,00.html
You are ineligible for the tax credit in at least 3 areas. Property must be used as your principal residence for 3 years, and it cannot be used as a second home or for rental purposes.
Additionally, the home is not eligible for the tax credit if you buy the home from a close relative.
If you claim the credit and do not live in the home for 3 years, the credit must be repaid in full.