A wiper apparatus (20; 30; 130) subjecting a wiper member (22; 32) to swinging drive, comprising: a motor part (21; 31; 100) having a rotation shaft; a speed reduction mechanism part having an output shaft and reducing a rotation of the rotation shaft; a controller for controlling a rotation of the output shaft; a housing in which the motor part, the speed reduction mechanism part, and the controller are housed; a wiper member (22; 32) attached to a distal end of the output shaft; a swing member (63; 71; 81; 90; 111) attached to the output shaft outside the housing, and subjected to swinging drive together with the output shaft; characterised in that the wiper apparatus further comprises: a pair of swing regulating portions (61, 62; 114, 115) integrally provided to the housing by integral molding, and contacting the swing member to prevent the swing member from being moved beyond a predetermined angle, the controller having a circuit board mounted with a rotation detection sensor, a worm wheel forming part of the speed reduction mechanism part is provided to one end of the output shaft, said end of the output shaft being integrally rotatably fixed to a rotation center of the worm wheel by serration joint, a sensor magnet is provided to a rotation center of the worm wheel; the rotation sensor is disposed so as to face the sensor magnet, the swing member is attached to a serration portion provided on the output shaft from the other end of the output shaft, and swage-fixed to the output shaft. a motor part (21; 31; 100) having a rotation shaft; a speed reduction mechanism part having an output shaft and reducing a rotation of the rotation shaft; a controller for controlling a rotation of the output shaft; a housing in which the motor part, the speed reduction mechanism part, and the controller are housed; a wiper member (22; 32) attached to a distal end of the output shaft; a swing member (63; 71; 81; 90; 111) attached to the output shaft outside the housing, and subjected to swinging drive together with the output shaft; characterised in that the wiper apparatus further comprises: a pair of swing regulating portions (61, 62; 114, 115) integrally provided to the housing by integral molding, and contacting the swing member to prevent the swing member from being moved beyond a predetermined angle, the controller having a circuit board mounted with a rotation detection sensor, a worm wheel forming part of the speed reduction mechanism part is provided to one end of the output shaft, said end of the output shaft being integrally rotatably fixed to a rotation center of the worm wheel by serration joint, a sensor magnet is provided to a rotation center of the worm wheel; the rotation sensor is disposed so as to face the sensor magnet, the swing member is attached to a serration portion provided on the output shaft from the other end of the output shaft, and swage-fixed to the output shaft. a pair of swing regulating portions (61, 62; 114, 115) integrally provided to the housing by integral molding, and contacting the swing member to prevent the swing member from being moved beyond a predetermined angle, the controller having a circuit board mounted with a rotation detection sensor, a worm wheel forming part of the speed reduction mechanism part is provided to one end of the output shaft, said end of the output shaft being integrally rotatably fixed to a rotation center of the worm wheel by serration joint, a sensor magnet is provided to a rotation center of the worm wheel; the rotation sensor is disposed so as to face the sensor magnet, the swing member is attached to a serration portion provided on the output shaft from the other end of the output shaft, and swage-fixed to the output shaft.