When North Texas homes hit the market, they're getting plenty of attention from potential buyers. The number of showings per home listing is among the highest in the nation. That's according to the latest data from ShowingTime, a home-showing management and market stats firm. But the bigger news is the declining available inventory. As of this past weekend according to a broker report there were only 610 active listings in the Dallas Fort-Worth area, down from over 13,000 active listings at the same time period some five years ago.