1
Modelling Real Estate EvaluationA Swedish
approach

• Jesper M. Paasch

2
Background

• Modelling of real property information and
  terrain objects stored at Lantmateriet, the
  National Land Survey (cadastre, land register,
  roads, buildings etc.)
• Need for uniform descriptions for information and
  system development
• Using UML
• Use of ISO standards

3
Examples of models
Real Property
SE / NO border

Placenames
Mortgage
Real Property Registration Tax
Metadata
Taxation / Valuation
Planning

Buildings
Historical sites

Roads
Land / Vegetation

4

• Today the NLS receives taxation- and valuation
  information from the National Tax Board.
• The technical exchange of data works with no
  problem.

5
Problems

• Different definitions within the NLS
• Different definitions within governmental
  organisations.
• Result
• A preliminary as good as possible model to
  begin with. The model must be more co-ordinated
  with the National Tax Board.
• Process modelling is very important