Data and Methodology

Data and Methodology

The RIWIS range of services is designed to support a variety of issues and decisions using current and reliable forecasts. Services on offer range from detailed information on specific properties to aggregated market data. Movements and trends are presented in time series and the most significant indices are used to make projections.

Wide Scope
Data areas (property-related, economic, socio-demographic,...)
Time periods (current and historic data, projected values)
Segments (residential, retail, office, commercial, special purpose)
Geographical areas (the surroundings of a single property, urban district, town, local authority, etc.)

Real estate investments are becoming ever more influenced by supervisory regulation. The financial risks associated with properties must be assessed and monitored. For this purpose, detailed, representative market data must be used in order to identify trends and assess actual risks and liabilities. RIWIS data is based on continuous and objective market observation and thus offers the ideal foundation to support the processes of monitoring, risk minimisation, audit compliance and also transparency. Supervisory requirements can be properly met and the application of regulations such as Basel III, MaRisk, KWG 20, BelWertV, SolvV, Solvency II, ImmoWertV, ErbStRG, or WertR2006 is fully supported.


With the help of powerful tools and scientific methods, a variety of raw data is blended together, correlated and analysed and finally consolidated into reliable market data. The processing of market data and calculation of forecasts, indices and scores occurs in-house and is supported and verified by regional teams of experts. Statistical methods guarantee data efficiency and reliability and ensure that regional structures and developments are not overlooked. This concept produces reliable indicators for sound analyses and forecasts. bulwiengesa AG data is used by the Deutsche Bundesbank and among others by the ECB and the BIZ.