This depends on what information you are talking about. In general, listings have a 2-4 day delay from when they are listed to when they hit this site. I have not used it for recent sales very often. Does your town allow you to search the public records for recent sales? That may be a better way to present your information than from a website like this.
I would think you would be a lot better off asking fro the help of a friendly Realtor in your area since finding sold prices online can be daunting at best. Finding what homes are listed for is pretty meaningless.