JAAP is the official application of the Royal Dutch Embassy, which was founded in 1979. It is a tool that makes it easier for you to find houses in the Netherlands. With this app, you can see what is currently on the market, and even what is going on in your favorite neighborhood. It is an app that has a lot of options, so you can customize it to your needs. You can search for all the houses in the Netherlands that are for sale. This includes not only what you see in your own neighborhood, but also all the other locations that are listed.