Houses gain on value with time. The only situation I can think of when a house does not gain on value with time is when its owner does not renovate it often enough. Even a one-time Window replacement San Antonio can make a huge difference in a house. A house can look a lot better to potential buyers if they see that the windows in it have been replaced recently. Unless you know how to renovate houses on your own and have the right tools to do so, it is never a good idea to buy an old house that you will need to renovate.