One of the distinctive traits of Milwaukee's residential areas are the neighborhoods full of so-called Polish flats. These are two-family homes with separate entrances, but with the units stacked one on top of another instead of side-by-side. This arrangement enables a family of limited means to purchase both a home and a modestly priced rental apartment unit. Since Polish-American immigrants to the area prized land ownership, this solution, which was prominent in their areas of settlement within the city, came to be associated with them.