That is a difficult, if not impossible question to answer. The reason is, the way HAR calculates it, it doesn't take into account the total number of days the property has been on the market. For instance, if I list a home for sale and have it listed for 120 days, that number starts counting toward days on the market. However, if I don't sell that home during that time and the seller goes and lists it with someone else after that initial 120 day period, the clock starts over again at zero. Additionally, if I list a property for 120 days and after 45 days, I decide I need to try and get more activity, I may terminate it and put it back in as a new listing (this is a violation of MLS rules, but it is done from time to time). Again, when I enter it as a new listing, the clock goes back to zero. So you can see, the number of days shown as "on the market" is truly just an indication of the time on the market since it was most recently entered as a new listing...not a true indication of the total time on the market at all. Agents have access to something called CDOM (Cumulative Days on the Market) on each individual house, but it is not a stat HAR gives out for all properties together. It would probably scare a lot of people if that number were known. I'm not sure of why you are looking for the number, but if it is to help establish something for a specific property, you'd be better off confining it to that subdivision. Real estate is an extremely local market and in a city the size of Houston, what plays in one part of town has absolutely no relevance in another. Hope that helps.