By M.P. MCQUEEN
and Jodi Hilton for The Wall Street Journal
The Hornes of Holliston, Mass., sold this house for a smaller one nearby, but haven't enjoyed the windfall they expected.
Trading down to a smaller home is a retirement-planning staple. According to an April study by the Society of Actuaries, 20% of not-yet retirees say they plan to downsize after the last child leaves the nest.
But it is getting a lot harder to do, even for wealthier people.
A study by the Joint Center for Housing Studies at Harvard University, scheduled to be released on Monday, shows that while mobility has slowed across all age groups during the real estate bust, "mobility rates among seniors have posted the sharpest drop." Trade-downs in March comprised about 8% of total home sales, down from 12% in October 2008, the first year for which there are historical comparisons, according to the National Association of Realtors.