The detailed knowledge of building stock features and performances has a potential positive disruptive effect on the ability of the EC to design effective policies targeting buildings in view of the 2050 strategy and the European Green Deal. Given the lack of comprehensive and reliable data on the EU building stock, BuiltHub will develop a structured and inclusive data collection approach, as well as an easy to access & use datahub, in the shape of a structured web-based platform (IT infrastructure, analytics and user-friendly dashboard), which will be fed into thanks to a benefits-based engagement strategy targeted to data and metadata providers, as well as simple users. The mentioned benefits-based engagement strategy will be implemented by developing added value information services tailored to lead-users of the platform and other main beneficiaries (end-users). The main premise behind the BuiltHub community building proposal is that data owners will be willing to feed-in data/information to the BuiltHub platform, in exchange for the added value information/knowledge that will be put out by the platform through its operation. In addition, “multipliers” will disseminate the BuiltHub achievements for enlarging the related community. The BuiltHub consortium will also develop different data processes and service schemes to cover possible users, based on their needs and potential use of data & analytics, as well as the benefits they could enjoy from cooperating with BuiltHub. The project aims to build upon the building stock observatory database and related analytics for making the data flow easier, resilient and safe. However, the BuiltHub consortium is also ready for a development approach which stands on its own, as a back-up plan. It also aims to work in close collaboration with mirror and sister projects and in particular B4E-6 MATRYCS by sharing data collection approach and a standard definition of each elements at different level (country to single building).