The answer to that question is that you must find a market that is at or near the bottom of the market and on its way up. I coach people all over the United States on how to profile markets for investing. One way to do it is to go to http://www.ofheo.gov
and look at the current HPI index. I am usual looking for a market where the one year appriciation rate on housing is less than the current quarter appriciation rate, times by four.
Another way is to look for areas that have lots of new jobs coming into the market., like http://www.bls.gov.
that is where the government reports employment stasticts by markets.
look in :Ann Arbor, MI, Appleton, WI, Augusta-Richmond County, GA-SC, Boulder, CO, Burlington, NC, Fort Collins-Loveland, CO, Iowa City, IA, Longview, WA, Rapid City, SD, St. Louis, MO-IL,
there aere many others.