One of our most interesting projects! From a technical point of view, we solved the modernization of an office building and the addition of a floor using two tender sources. For the modernization of the existing lower level, an energy efficiency priority 4 tender, for the extension a technology development we used priority 1 tender support. During the preparation of the tender material, the energy certificate had to be prepared by modeling, and the costs had to be broken down during the implementation to be solved precisely in order to avoid accidental double financing. In the end, everything fell into place, and the applicant received the support in full.