The Wall Street Journal reported that there were just 1.48 million homes listed for sale at the end of January, down by 5.6% from December and by 16.5% from one year ago, according to data compiled by Realtor.com. That’s the lowest level since the firm began its count in 2007. The National Association of Realtors separately reported last month that inventory ended 2012 at an 11-year low.