Abstract: A modular construction for chairs, couches and the like having a base supporting frame provided with sides formed with horizontally arranged spaces or slots. Garnishing or veneering, elbow rest and seat back elements are provided with battens or tongues which are received in the spaces or slots of the base frame and are secured thereto by fastening elements, such as screws or the like. A foundation or support is provided on the base frame to receive and support a seat cushion.