Holding, renting and managing real estate as well as all other real estate transactions both domestically and abroad, in particular the brokerage, acquisition and sale of developed and undeveloped land, as well as the planning, construction, renovation and repurposing of buildings on its own account and on behalf of third parties; may participate in other companies, establish subsidiaries and branch offices, grant loans and provide unused mortgage certificates on the company's properties as collateral for a fee.