30-year mortgages have fallen from nearly 4.5 percent to 3.6 percent. The slide has prompted another round of the perennial question: is it time to refinance?
Read MoreA couple of months ago, I noted that the housing market had a problem: there were too few homes for sale. Persistently low inventory means that there are a lot of frustrated would-be buyers out there, spending weekends at open houses. It also has led to home prices continuing to rise at a more than six percent clip from a year ago.
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