Since the mid-'90s, the housing capital stock, which reflects - that's the number of homes in the U.S., as well as their size and quality - the housing capital stock has been growing around three percent per year...
Over the past decade, the size of a typical new home increased nearly 20 percent in the United States, and many homeowners invested in home improvements and renovations. So, today, many middle-class homes are - have bigger kitchens, more bathrooms, and it's not uncommon to see state of the art media rooms. So, you've seen more homes being built, and larger homes being built.
Nonetheless, with underlying housing demand growing at three percent per year, these very large gains that we've seen in residential investment, which averaged 8.5 percent a year between 2001 and 2005, they clearly could not continue indefinitely.
Moreover, housing demand may slow to less than three percent, as demographics point to slower growth in household formation. So, as a result, we at the Chicago Fed accept some further weakness in residential construction.