Operation of an architecture and engineering office; design, creation, planning and construction management of residential, industrial, hospital and office buildings. Provision of all services in the construction industry, in particular in the areas of new construction, renovation and refurbishment, solar architecture, planning coordination and construction management, construction companies. Administration, brokerage, purchase, sale and trade of land, properties, condominium ownership and building rights. Execution of maintenance, janitorial and gardening work as well as renovation of domestic technical installations. Planning and implementation of installations in the areas of electrical installations, plumbing, ventilation and heating as well as their service and maintenance.