If this was already brought up, I apologize. According to the Fannie Mae Selling Guide: "When completing the One-Unit Housing Trends portion of the Neighborhood section of the appraisal report, the trends must be reflective of those properties deemed to be competitive to the property being appraised." It seems now that we are to overlook this and report the overall housing trend regardless if the sales are comparable or not. Trying to finding a month by month change for 3 bedroom 1 bath ranches with basements and a 1 car garage is like searching for a needle in a haystack. My resources are not that granular. All of these online sources like Zillow determines trends by lumping all single family dwellings in an entire ZIP code whether they are comparable or not. How is this specific to properties that are comparable to the subject? Not to mention when you have a 75 Sq mile ZIP code that covers multiple towns.
Also, what if data for the current month is not yet published? For example, February stats are not yet known so are we supposed to use January and if so, what if we later find out that January is much different than February once February stats are known?
Lastly, all of these online sources use closing dates not contract dates to determine their trends.