Provision of services in the field of construction economics, specifically for construction planning, construction consulting and owner consulting and representation, for cost estimation, cost determination and cost monitoring, for tenders, contract drafting, construction accounting and construction trust, as well as for the creation and analysis of expert opinions, economic and return calculations; Acquisition, management and sale of properties or securities; Taking and granting of loans; Issuance of guarantees and other securities; Acquisition, management and exploitation of intellectual property rights; Participations.