File:Frank G. and Mary G. Brown House, Langdon Street and Carroll Street, State-Langdon-Lakeshore, Madison, WI.jpg

English: Built in 1905, this Colonial Revival-style house was designed by Law, Law and Potter for Frank G. Brown, and his wife, Mary G. Brown, and was expanded to become the Alpha Phi Sorority House in 1927. The house features a red flemish bond brick exterior, front and side gable roof, modillions on the eaves, an arched attic window bay with a Palladian window, eight-over-one, six-over-one, and four-over-one double-hung windows, stone trim, quoins, a front porch with a rooftop balustrade, ionic columns, and a cornice with modillions, a front door with a fanlight transom and sidelights, gabled dormers, an enclosed sun porch with a rooftop deck facing Lake Mendota, and stone belt coursing at the base of the first floor. The house is a contributing structure in the Langdon Street Historic District, listed on the National Register of Historic Places in 1986.