The main task of the expert committees is to create market transparency. The products used to create this market transparency are, on the one hand, the  standard land value map, which provides information on average land values within standard land value zones. Standard land value zones combine areas that largely correspond in terms of their state of development and the type and extent of use.

With the  land market report, the expert committee provides information on what is happening on the land market.

The current value of a property (or the value on a previous date) is determined in a  market value appraisal.

In connection with the preparation of the rent index, the expert committee maintains comprehensive maps of  residential areas.