Are these windowless caves with a deep covered porch enclosing all the living room windows actually being built?

Seeing it in almost every plan that's posted on here - walk in front door office on one side, dining room on the other, then on into a great room with an adults wing on one side and kids on the other, and a deep covered porch on the back wall covering all the windows.

Do these actually get built like that? I know double height living rooms and useless dead loft space at the tops of stairs got built, so it's possible.