The foreclosure market is expected to see a boom in inventory levels later this year as the millions of American homes held up in foreclosure proceedings are dumped onto the market. The rate of foreclosed homes coming to market has slowed in recent months as paperwork and processing delays have held up property repossessions by the nation’s lending institutions. This so-called “shadow inventory” of homes, or distressed properties expected to fall victim to foreclosure, is estimated to consist of well over one million single-family homes in neighborhoods all over the country.