Based in Norton Shores, MI with executive offices in Rosemont, IL, Horizon Group Properties, Inc. is an owner and developer of factory outlet shopping centers and is the developer of a master planned community in suburban Chicago. Contact us: Muskegon, MI Office Phone: 231.798.9100 Fax: 231.798.5100 5000 Hakes Drive Muskegon, MI 49441 Chicago, IL Office Phone: 847.292.1870 Fax: 847.292.1879 6250 N. River Road, Ste 10400 Rosemont, IL 60018