The Alfred Lindorff House, at 40 Sampson Ave. in Park City, Utah, was built around 1885. It was listed on the National Register of Historic Places in 1984. It was deemed "architecturally significant as one of two well preserved examples of a Park City house with a distinct L-plan by addition. This type of addition does not appear to have been common in Park City building, and less than five examples of the type are extant. As opposed to the T/L cottage and the T/L cottage by addition, which viewed from the facade have relatively short cross-wings and longer stem-wings, the L-plan by addition house has a distinctive L-plan consisting of two wings of almost equal length that intersect at right angles. A difference in the window types of the two wings indicates that this house was not built w