When you say "property," do you mean real estate - or personal property?
If real estate, that can be very complicated and result in unintended consequences regarding taxes and property values. I would not do anything without your counsel first working with the donor's agent and attorney.
The process is straightforward if this is something else, like a piece of equipment. The seller prepares an invoice reflecting the full retail value of the property. The seller's invoice includes a line indicating something like, "Less a charitable donation of $N,NNN."
The "less" amount is treated as a bargain sale as described in IRS Publication 526. Your receipt would reference only the bargain sale amount (not the full value) and that the donation was a bargain sale. Also, internally, the bargain sale amount is recorded as a gift-in-kind.
John
John H. Taylor
Principal
John H. Taylor Consulting, LLC
2604 Sevier St.
Durham, NC 27705
919.816.5903 (cell/text)
Serving the Advancement Community Since 1987