There were 117,485 U.S. properties with default notices, scheduled auctions and bank repossessions in March, RealtyTrac reported.
That lifted overall foreclosure activity by 4 percent last month from February, when it posted an over seven-year low. The monthly increase was driven by a 7 percent rise in foreclosure starts, which is the initial public notice starting the property seizure process.
"Now that the foreclosure deluge has dried up, banks are turning their attention back to properties that have been sitting in foreclosure limbo for some time,'' said Daren Blomquist, vice president at RealtyTrac.
Read More The antidote to cabin fever: Check out these places
Banks are expected to devote more resources to dealing with the lingering inventory of nearly half a million already-foreclosed homes that still need to be sold, said Blomquist.
Currently, about 10 percent of so-called bank-owned properties are listed for sale and more than half are still occupied by the former homeowner or renter.
A total of 28,840 U.S. properties were repossessed by lenders in March, down 5 percent from February, and marking a drop of 34 percent from the same month a year ago to their lowest level since July 2007.