To reduce a cost and to easily attach housing furniture.

A notch 8 where a lower crosspiece 1 is contained is formed in a part projecting from the back plate 7 of a side plate 3a constituting housing furniture 2 to a wall surface 20. Thus, the housing furniture 2 is positioned by locking the notch 8 of the side plate 3a in the housing furniture 2 to the lower crosspiece 1 which is fixed on the wall surface 20 so that the housing furniture 2 is easily attached on the wall surface 20. Besides, the housing furniture 2 is attached by permitting the end edge of the side plate 3a to be abutted on the wall surface 20 without making a gap between housing furniture 2 and the wall surface 20 though the lower crosspiece 1 is attached on the wall surface 20. Moreover, the notch 1 is formed only in the side plate 3a which is abutted on adjacent housing furniture and the both ends of the lower crosspiece 1 are abutted on the inner surfaces of the side plates 3b of the both side ends in the plural pieces of arranged housing furniture 2 so that a decorative side plate is unnecessitated.