With almost 44,000 apartments throughout the city, GAG Immobilien AG is the largest landlord in Cologne. Since 1913, GAG has been building and managing settlements that still characterize many parts of Cologne and are often listed as historical monuments. In addition to maintaining and maintaining the portfolio, GAG is also pursuing the goal of stabilizing the Cologne housing market with new, affordable apartments with many new building projects. The management of one's own apartments is the focus of entrepreneurial activities. Another business area is the management of around 4,000 third-party apartments via the WEG administration. In addition, GAG acts as a property developer in the construction of private homes and condominiums in the Cologne city area. With comprehensive advice and customer service, she takes care of living in Cologne.