The way to understand how much demand and offer a house is in the market is to find out how long that house has been on sale. Because in some cases, one of the reasons why the house you are interested in has been on sale for a long time and has not yet found a buyer may be a sign that there is a problem with the house. These problems can be related not only to the house but also to the person who is the seller of the house. However, the best way to learn the answer to this question is to talk to your real estate agent.