When performing an analysis of recently sold properties to determine a reasonable offer, should you look at the contract date or closing date? For example, I saw a property that had a contract date of 4/15/05 and a closing date of 1/20/06 and another that had a contract date of 11/29/04 with closing date of 1/31/06. Are the prices really effective in 2006, or should they be thought of as the price in 2005 or 2004?