The purchase, sale, management, administration, rental and sub-rental of real estate. It may carry out all commercial, financial or other activities related to the purpose and in particular carry out renovations and restorations of buildings pursuing the concepts of bio-building, as well as offer services in the fields of architecture and lighting technology. It may acquire participations in companies or enterprises, participate in consortia and groupings of enterprises. Participation in financial, commercial, industrial and real estate companies and enterprises. It may acquire, sell and mortgage real estate in Switzerland.