"A porch is the transition space between the street, which is public, and the living room, which is private," Maxam said. "It provides the space to greet someone coming to your home.”
According to the National Association of Homebuilders, 42 percent of new single family homes had porches 14 years ago. Today, that number rises to 53 percent.
From an article on porches by Beth Lively at the Rapid Growth webzine.