Multigenerational homes that fit just right

The number of Americans living in multigenerational households — defined, generally, as homes with more than one adult generation — rose to 56.8 million in 2012, or about 18.1 percent of the total population, from 46.6 million, or 15.5 percent of the population in 2007, The homebuilding industry is responding quickly to this shifting demand by creating homes specifically intended for such families.