A handle device comprising: an operation handle which is assembled to a door and serves as a handle during an opening/closing operation of the door; and a sensor electrode which is provided in the operation handle , and which is configured to detect a change in capacitance in response to contact or approach of a human body to a detection region (Db) set on a surface of the operation handle , wherein the surface of the operation handle includes the detection region (Db) and a decoration region (De) surrounding all or a part of a periphery of the detection region (Db), and wherein the detection region (Db) is electrically insulated from the decoration region (De), and the sensor electrode is disposed on a back surface of a substrate which is a part of the surface of the operation handle , wherein the operation handle includes a body grip facing the door with a gap therebetween and a cover grip assembled to cover an outer side of the body grip , the cover grip includes an opening portion passing through front and back sides of the cover grip , the body grip includes a side wall portion facing outside from the opening portion of the cover grip in a state that the cover grip is assembled, the detection region (Db) is disposed on the side wall portion , the decoration region (De) has a metal plating coated on the surface of the operation handle , characterized in that the detection region (Db) has a color tone consistent with the metal plating of the decoration region (De), and the detection region (Db) has a non-conductive film material transferred to the surface of the operation handle , transferred to the surface of the side wall portion of the body grip . an operation handle which is assembled to a door and serves as a handle during an opening/closing operation of the door; and a sensor electrode which is provided in the operation handle , and which is configured to detect a change in capacitance in response to contact or approach of a human body to a detection region (Db) set on a surface of the operation handle , wherein the surface of the operation handle includes the detection region (Db) and a decoration region (De) surrounding all or a part of a periphery of the detection region (Db), and wherein the detection region (Db) is electrically insulated from the decoration region (De), and the sensor electrode is disposed on a back surface of a substrate which is a part of the surface of the operation handle , wherein the operation handle includes a body grip facing the door with a gap therebetween and a cover grip assembled to cover an outer side of the body grip , the cover grip includes an opening portion passing through front and back sides of the cover grip , the body grip includes a side wall portion facing outside from the opening portion of the cover grip in a state that the cover grip is assembled, the detection region (Db) is disposed on the side wall portion , the decoration region (De) has a metal plating coated on the surface of the operation handle , characterized in that the detection region (Db) has a color tone consistent with the metal plating of the decoration region (De), and the detection region (Db) has a non-conductive film material transferred to the surface of the operation handle , transferred to the surface of the side wall portion of the body grip . <EOS>