Abstract: A wall repair device is provided for aiding in the repair of a hole in a standard plasterboard wall. The device comprises a rigid mounting plate, a first hollow cylinder which forms a cavity, a second hollow cylinder disposed within the cavity of the first cylinder so as to be in telescoping relationship thereto, and an advancing structure for selectively drawing the second cylinder outwardly through the top portion of the first cylinder to a locked, extended position such that the device becomes self-supporting within the interior of the wall to be repaired, the mounting plate substantially covering a hole therein. A layer of plaster is then applied to fill the remainder of the hole, the mounting plate serving as a foundation for the plaster.