[twothamendment]

In the last decade I built 2 houses in the same neighborhood over 6 years. The first didn't require a return per room and the second one did - they had changed their code. A few years later and they had reversed their decision.

I guess the point is that it depends on when and where something was built. My most recent home is only a few years old and doesn't have a return per room and no code to say it should shouldn't.