One-and-a-Half Story Houses: The large, bright spaces created within one-and-a-half-story house plans create the perfect setting for modern family life. Because the upper floor usually occupies only half the area of the main floor, large, upper-level gabled windows or dormer windows are very common, and add to the charm of these appealing homes. Often, the master bedroom is located on the main level, while the secondary bedrooms are found on the upper level. In addition, a portion of the upper level is often open to the main living areas below, creating magnificent, vaulted living spaces with large expanses of windows.