Established in 1989, Signature Associates is the leading full-service commercial real estate firm specializing in Michigan and Northwest Ohio.  Headquartered in Southfield, with offices in Lansing, Grand Rapids, Muskegon, Kalamazoo, Michigan and Toledo, Ohio.  Signature provides a diversity of services including industrial, office and retail brokerage, investment and business sales, property/asset management, advisory services and mortgage banking.