Even the media idiots get it now.

Homeowners' low mortgage rates keeping them from selling.

" WASHINGTON -- Would-be home sellers across the country are grappling with a once-in-a-lifetime problem: They have mortgage rates so absurdly low it would hurt them financially to sell. 

Doing so would mean giving up an irresistible rate in exchange for a new mortgage carrying a rate up to a percentage point higher. Their monthly payments would be larger even for a house of the same price. That's discouraging some people from selling, thereby limiting the supply of available homes and contributing to slower home sales.

It's a significant shift from the way the U.S. housing market has worked for the past 30 years. For most of that time, whenever a homeowner decided to trade up to a better home, mortgage rates usually were lower than the last time they had bought. That helped make a new purchase seem more attractive.

More than one-third of homes with a mortgage now have rates below 4 percent, real estate data provider CoreLogic estimates. Yet mortgage rates now average 4.2 percent. That is still low by historical standards but up about three-quarters of a point from a year and a half ago. And should mortgage rates rise later this year and next, as many economists expect, even more homeowners will be affected. "

One third of houses is a very large section of the industry. Obviously.