Exhibit 21.1 AMERIHOST PROPERTIES, INC. LISTING OF SUBSIDIARIES State of Incorporation Ownership Entity or Organization Percentage - ---------------------------------- ------------------- -------------- Amerihost Development, Inc. Illinois 100.00% Amerihost Lodging Group, Inc. Delaware 100.00% Amerihost Management, Inc. Illinois 100.00% Amerihost Staffing, Inc. Illinois 100.00% AP Equities of Arkansas, Inc. Arkansas 100.00% AP Equities of Florida, Inc. Florida 100.00% AP Hotels of Georgia, Inc. Georgia 100.00% AP Hotels of Illinois, Inc. Illinois 100.00% AP Hotels of Michigan, Inc. Delaware 100.00% AP Hotels of Mississippi, Inc. Mississippi 100.00% AP Hotels of Ohio, Inc. Delaware 100.00% AP Hotels of Pennsylvania, Inc. Pennsylvania 100.00% AP Hotels of Texas, Inc. Delaware 100.00% AP Lodging of Ohio, Inc. Ohio 100.00% AP Properties of Ohio, Inc. Ohio 100.00% API of Indiana, Inc. Indiana 100.00% Niles, Illinois Hotel Corporation Illinois 100.00% Shorewood Hotel Investments, Inc. Illinois 100.00% Shorewood Investors, Inc. Illinois 100.00% AmeriHost Inns of Illinois, Inc. Illinois 100.00% AmeriHost Inns of Ohio, Inc. Ohio 100.00% AP Hotels of Wisconsin, Inc. Wisconsin 100.00% AP Hotels of Iowa, Inc. Iowa 100.00% API/Marysville, Inc. Ohio 100.00% API/Plainfield, Inc. Indiana 100.00% AP Hotels of California, Inc. California 100.00% AP Hotels of Missouri, Inc. Missouri 100.00% AP Properties of Mississippi, Inc. Mississippi 100.00% AP Hotels of Oklahoma, Inc. Oklahoma 100.00% AP Hotels/Altoona, PA, Inc. Pennsylvania 100.00% API/Athens, OH, Inc. Ohio 100.00% API/Hammond, IN, Inc. Indiana 100.00% API/Lancaster, OH, Inc. Ohio 100.00% API/Logan, OH, Inc. Ohio 100.00% API/Metropolis, IL, Inc. Illinois 100.00% AP Hotels/Parkersburg, WV, Inc. West Virginia 100.00% API/Washington C.H., OH, Inc. Ohio 100.00% AmeriHost Inns of America, Inc. Delaware 100.00% AmeriHost Inns, Inc. Delaware 100.00% API/Columbia City, IN, Inc. Indiana 100.00% Sullivan Motel Associates Limited Partnership. Indiana 56.00% Metropolis, IL 1292 Limited Partnership Illinois 54.90% Dayton, Ohio 1291 Limited Partnership Ohio 61.50% Altoona, PA 792 Limited Partnership Pennsylvania 62.78% New Philadelphia, Ohio 1092 Limited Partnership Ohio 50.35%