It's more complicated than you think. Office buildings aren't configured like apartment buildings; for example, plumbing and windows/lighting. Also, depending o

It's more complicated than you think. Office buildings aren't configured like apartment buildings; for example, plumbing and windows/lighting. Also, depending on the local rules, an office-to-housing conversion might require adding more parking. All these are expensive things to do, because office buildings were built to be office buildings. It's not impossible to convert them to housing, but there aren't as many cases as you'd expect where it makes economic sense to do so.