Schmidt & Bethge Nachf. AIG - Allgemeine Immobilien Gesellschaft mbH is a German real estate company that has been active in the industry for several decades. The company specializes in the management, development, and sale of both residential and commercial properties. Known for its longstanding tradition and expertise, Schmidt & Bethge Nachf. AIG focuses on providing comprehensive real estate services, including property investment, asset management, and development projects. The company's commitment to reliability and quality has made it a trusted partner in the German real estate market.