Even in Tough Housing Market, Decks Add to Home Equity Midrange decks continue to beat the national average for return on remodeling investment A dollar spent on remodeling projects generally added less to home values last year than it did the year before, according to the "Cost vs. Value Report 2009-10" from Remodeling (a sister magazine to PDB ). Nationally in 2009, a homeowner who sold his or her home could expect to recoup an average of 63.8 percent of the cost of recent remodeling projects, a drop of 3.5 percentage points from 2008's cost-value ratio - which was itself