I believe you are looking for an absorption rate of Chestnut RIdge.
the answers are all correct, however, 150,000 range between 450-600 is really huge, you will find different stats between each 50,000 price range. Perhaps you're trying to determine price? There are many opinions but one set of stats.
I can send you direct stats from our MLS, non branded, for you convenience to look at, if you'd like them, please contact me.