Oak Park Avenue Realty Oak Park Avenue Realty, LTD, an affiliate of Mack Companies is one of the midwest’s largest redevelopers of residential and commercial real estate. We believe the success of your investment is directly correlated to the quality of your property management. Our professional services will make the difference between a non-performing asset to one that is profitable and cash flowing. Please use the links below to view our many services: Property Management Brokerage Receivership and REO Consulting