It is a bit of a dichotomy. There have been articles published about the economy causing families to move back together. Adult children move back home to avoid rent or mortgage payments. Grandparents move in with the kids for the same reason. By consolidating, grandparents are available for caring for young children, adult children are available to care for older parents.
Meanwhile a trend for smaller homes is developing. 
As reported by REALTOR®Mag, new homes are appearing that have two master suites, one at each end of the home. One for the parents and one for the grandparents.
Median home size by region
Will these two trends collide?
Resource: REALTOR@reg;Mag & The Washington Post
