Known for their symmetrical exteriors, these designs usually incorporate a centered entry door and a balanced arrangement of windows. Transoms and sidelights accentuate the entry door while multi-pane, double hung windows fill the home with natural light. Other recognizable exterior features include low-pitched roofs, narrow overhangs, dormers and entrances marked with tall columns extending up to the roof. Economical in design, the roofline allows these historical house plans to have a spacious second story providing the same amount of living space on the second floor as on the first floor. Colonial house plans vary in style from the shores of New England to the southern swamps, but they are all typically finished with brick or clapboard siding and wooden shutters. Sometimes Dutch style home plans and Southern floor plans reflect elements of these historical designs. Colonial floor plans share similarities with Cape Cod house plans and Southern house plans.