Koenig and Strey GMAC Real Estate has become one of the most successful real estate firms in the Chicago area by providing unsurpassed service to home buyers and sellers. Koenig and Strey GMAC Real Estate continues to lead the market by offering custom marketing programs and complete transaction services to each of our customers. Our single-source concept, along with our commitment to innovative marketing and technology programs, has made us a nationally recognized leader in the industry. As a GMAC Home Services company, Koenig and Strey GMAC Real Estate provides homeowner services and consumer related products through a strong network of affiliated brokers and national service providers.