A linearly extendible impact anchor driving apparatus for positioning and setting a wedge anchor assembly in a pre-drilled hole extending inwardly through the ceiling or wall surface of a structure while at ground level and with a single tool. One embodiment of the apparatus has an extendible tubular housing with a coupling and anchor head at one end and a hemispherical end tip at the other. A slidable handle impacts a stop mounted to the body to impart linear force to the anchor.