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.