Purchase, sale, rental, leasing and management of built and unbuilt, own and third-party properties, as well as planning, execution and renovation of buildings, promotion and realization of own or third-party construction projects, in particular planning, project and construction management, monitoring and control of construction progress and costs, and execution of general and total contractor contracts. May establish branches and subsidiaries in Switzerland and abroad, participate in other companies, acquire and sell rights and patents, is authorized to acquire, encumber, sell and manage real estate in Switzerland and abroad, and may otherwise conduct all business that is suitable to promote the development of the company and achieve its corporate purpose.