Where is the boundary between your garden and the one of your neighbor? Which piece of real estate belongs to whom? These and many more questions can be answered by ‘Het Kadaster’. ‘Het Kadaster’ is the Dutch land registry and mapping agency. They are concerned with the registers on administrative aid and spatial data on property and the rights which are involved in this. Because they are a public body, the data they collect is always available on their web-services. With this data, they can advise a multitude of customer groups like local authorities and private businesses.