BuildingTrust – Trustee modules for building data

The goal of the project "BuildingTrust" is to develop a modular data trustee for building data that motivates users to provide, maintain and anonymously share (personal) data. The goal is to optimize and accelerate sustainable building through a self-determined data trustee that generates added value for data givers and data takers and creates trust for sharing data. Based on the "Digital Patient Record" in the healthcare sector, the "BuildingTrust" project thus introduces a "Digital Building Record".

The challenge

One of the biggest challenges in creating a data trust for building data is to collect data from different sources. Often, data is stored in data silos, such as land registry offices, funding agencies, or with different property owners, making it difficult to access. Another challenge is communicating grants to potential recipients and assisting them with the application process. This could result in a significantly higher award rate, which on the one hand would improve the energy efficiency of buildings and thus of municipalities, and on the other hand could create living space that previously could not be used due to legal regulations.


Our service 

Within the scope of the project, Fraunhofer ISST is particularly concerned with the design of a data sovereign, trustworthy data trustee. In doing so, we build on the existing results of the KomDatTIS project. We extend the existing developments by the requirements and incentive mechanisms identified in the project. This lays the foundation for the building data trustee and its data products.


The result

The project pursues the goal of establishing the data trustee for building data as the basis for digital twins of buildings, neighborhoods and/or cities in order to be able to contribute to climate neutrality. In doing so, the data trustee can direct targeted retrofit measures to owners and assist with funding applications to enable optimal control and acceleration of measures. This will help to increase the effectiveness and efficiency of building control and optimization and thus make an important contribution to achieving the climate targets in the building sector.



  • TU Dortmund – Chair for Industrial Information Management
  • Data Competence Center for Cities and Regions
  • Leibniz Institute of Ecological Urban and Regional Development


  • Federal Ministry of Education and Research BMBF
  • Funding code: 16DTM203C
  • Duration: 10/2023-09/2025