A wall mounting bracket comprising a plastic body which includes a wall having an integral projection facing outwardly with a centering recess to receive the tip of a hole saw or the like. At least one opening is provided through the wall adjacent the projection. Preferably, a plurality of openings are provided at equally spaced radial locations adjacent the projection. In use, the body is mounted on the building and then siding is applied to the wall of the building and the edges of the siding or brought into closely adjacent relation with the plastic body.