Am I taxed on the cash back I received at time of purchase?

[Scot Howat]

I'm considering buying a property to fix & flip where I'd borrower 75% of the purchase price from a commercial lender and the remaining downpayment (25%) and rehab costs will be wired in by a friend from his IRA.

At closing I should receive a check back from the title company for the rehab costs (less fees etc).  Will I be taxed on the cash back I get once I purchase the home? (Net 25k+/-)