Holding, renting and managing real estate as well as all other real estate transactions at home and abroad, in particular brokerage, acquisition and sale of developed and undeveloped land, as well as planning, construction, renovation and conversion of buildings on its own or on behalf of third parties; may participate in other companies, establish subsidiaries and branches, operate trade in vehicles of all kinds and accessories, grant loans and provide unused mortgage certificates on the company's properties as security against payment.