The lowest actual sales numbers for the year are almost always in January or February. That's because these are the sales negotiated around the holidays.

In addition, when the index was created in 1981 the typical lending criteria, assumptions and mortgage instruments were considerably different from what they are today.

Agents who list property in the Multiple Listing Service agree to share commissions if other agents bring a seller to the table. Unless the agent has a buyer's agreement with you, the agent may be working as a sub-agent of the seller and obligated to get the highest price for the seller.