In multi-family construction it is increasingly common to get a combination of concrete and steel and curtain wall on the first floor and wood frame on the upper floors. Are we combining the worst of residential and commercial? Or are we getting the best of residential and commercial? How do you specify, design and construct these types of enclosures? How do you “compartmentalize” these units? How do you ventilate these units? How do you condition these units? Roof design and wall design options will be discussed. And our personal favorites – courtyard waterproofing, planters, fountains and swimming pools located above conditioned space.