Realtor.com predicts that the Greater Des Moines residential real estate market could be among the fastest growing in the country during the third quarter. These factors will trigger the growth: a median list price that has increased nearly 7.5 percent over the last year, a decline in total listings and fewer older homes in the housing inventory. Those add up to a No. 5 ranking on the real estate website's list of the top 10 markets for the quarter.