We going to list the worst housing markets. Home prices in these U.S. cities plummeted as much as 18 percent last year.

Atlanta, Georgia has home prices down by 7.1%. Overbuilding, especially in the condo market on the city’s beltway, has hurt prices here. High foreclosure rates, most notably in poorer counties such as Fulton, have hurt the market further. Prices are down 7.1% here from last year. ZipRealty does not track the Atlanta market for inventory.

Jacksonville, Florida has prices down by 8.7%. Fortunately for Jacksonville, prices didn’t spike as much as they did elsewhere in Florida, which means they don’t have as much of a high from which to come down. Still, prices have dropped 8.7% in year-over-year terms. Now sellers are slashing prices, with 44.7% of those looking to sell a home reducing their asking price since first listing.

Phoenix, Arizona has housing pricing down by 9.5%. A prime example of “drive until you qualify,” Phoenix saw builders flood the desert with homes ever further from the city’s downtown. There are 51,643 homes on the market now, as foreclosures and overbuilding have taken a toll. Prices are down 9.5% from last year, and the slide looks likely to continue.