Developments of the 3D cadastre in Norway
Valstar, Tor
Our physical world is in three dimensions, but the cadastral systems of the world register real property mostly in two dimensions. This seemingly paradox is not so strange considering the cadastre is an old invention. Modern technology makes it fairly easy to present and map any object in three dimensions. The main obstacle in adopting 3D technology is the legal systems, which are slow to change. Some countries have made progress in this respect and recent laws, especially from Northern Europe, have made it possible to register properties in strata. None of these laws define property in general as three-dimensional, but it accepts that a volume parcel can be established both below and above the main surface parcel. This paper will focus mainly on the newly adopted Law on Cadastre in Norway and compare it with the Swedish 3D Cadastre. Details of the Oslo Method will also be presented. This is a system that was established in 1987, whereby special threedimensional objects could be registered as real property both in the cadastral and the title register in the City of Oslo. In preparation for the Law on Cadastre and the new extended Cadastral Registry there are exciting software developments that aim to show underground properties and structures as a transparent 3D model. Examples will be presented at the Congress.
Event: XXIII International FIG Congress : Shaping the change
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