It’s become a broken record of late: Home-price declines breaking records. With the economy on the skids and the subprime crisis still unfolding, home values are getting devoured first. This morning the S&P/Case-Shiller home-price index was released, revealing that the trend doesn’t show any signs of slowing down. The 20-city index showed year-to-year August price declines of 16.6 percent. Minneapolis saw a drop of 13.3 percent over the year period, with a 1 percent decline from July to August.

Recent reports indicate that home sales are up, a possible sign of a turnaround, some analysts say. But trusting in that marker is like Greenspan relying on capitalism or ghosts relying on astrology–it’s meaningless and totally futile. Home sales are up as a result of the sharp increase in foreclosures and short sales, a bad sign for homeowners and an already shaky economy. In fact, according to the most recent report from the Minneapolis Area Association of Realtors, the inventory of foreclosures and short sales–property sold for below its current loan value– has increased more than 64 percent of the past year. Of the current homes for sale in the Twin Cities, nearly 30 percent are foreclosures or short sales.

The hardest hit neighborhood in Minneapolis is on the Northside, where lender-mediated sales (short sales and foreclosures) account for 69 percent of the inventory of homes for sale in October. Powderhorn is a close second with nearly 52 percent. And the suburbs aren’t immune to the growing problem. Foreclosures and short sales make up more than 63 percent of all the October homes sales in Brooklyn Center.

In St. Paul, the Central neighborhood’s current home sales are more than 63 percent lender-mediated, while Phalen’s foreclosures and short sales have risen to 60 percent this month.