A cover plate assembly is provided with a subplate with a substrate mounted to a wall mounted electrical device, to enclose the electrical device. A rim extends from a periphery of the substrate with a plurality of notches formed into an outer periphery of the rim. A cover plate with a substrate is adapted to be mounted upon the subplate substrate. A rim extends from a periphery of the cover plate substrate. A plurality of fasteners extends from the cover plate rim to engage the plurality of notches in the subplate to fasten the cover plate to the subplate. The plurality of fasteners is formed integrally with the cover plate and concealed within the cover plate rim.