Abstract: The prefabrication of a window ledge is described in sequential steps. The method of prefabricating a window ledge includes preparing two portions, a top portion and a bottom portion. The bottom portion is appropriately profiled in a block, while the top portion is appropriately cut to provide a rounded front edge. After the bottom block has been appropriately cut to provide the desired profile, and a determination of the width of the window in which the window ledge will be installed has been made, the two portions are appropriately cut to size, with the bottom portion having its ends cut to provide the same profile as the front side and the two portions are appropriately secured together, ready for finish coating/painting and installation at the appropriate window frame location.