Working Committee of the Surveying Authorities of the Laender of the Federal Republic of Germany
“The formation of the ImmoWert working group (AG ImmoWert), and the direct connection to the AdV chairmanship, takes into account the AdV’s commitment to increasingly take on the tasks of official real estate valuation and to be available as a single point of contact for federal ministries and other institutions. In particular, the consistent development of the standard land value model BRM 3.0.0 in the AAA® model enables the nationwide use of standard land values for a wide range of applications.”
Karin Schultze
AdV-Chairwoman 2024/2025, Ministry of the Infrastructure and Digital Affairs of Land Saxony-Anhalt
A completely revised version of the standard land value portal BORIS-D, launched at INTERGEO 2022, is one of the first results of the work of the AG ImmoWert. The working group has also adaptated and further developed the standard land value data model to the requirements of GeoInfoDok and ImmoWertV 2021, as well as the current requirements for a suitable and up-to-date data structure and data management.
The Standard Land Value Model BRM 3.0.0 defines an external standard in the modelling language UML, which is intended to ensure nationwide provision and use of the official standard land values, in particular for BORIS Germany and for tax purposes.
The standard land values as technical geospatial data of the surveying authorities use the basic schema of the geospatial reference data, in which fundamental properties of geo-objects are described. The specialised schema describes the structure of object classes, object type groups, object types, and their attributes. It encompasses all legal provisions for the standard land values, organisational features, and further information on the standard land value.
Formal release of BRM 3.0.0 and subsequent publication on the AdV website is scheduled for February 2024.
Benefits
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Integration of the AG ImmoWert into established AdV structures strengthens cross-Laender cooperation and standardisation in the field of official real estate valuation.
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Provision of standard land values in the standard land value model 3.0.0 enables integration into automated business and valuation processes, particularly in financial administration but also in banking and insurance, the real estate industry, and companies offering real estate valuation services.
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The BORIS-D information portal, a joint project of all the German Laender, makes the standard land values of the expert committees available to the public in a standardised, web- based, free and easily accessible form across all Laender, thus creating market transparency.
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The standardisation serves as the foundation for the further nationwide development of digital, future-oriented solutions for the increased requirements of administration, economy, statistics, and science.