Florida dominates the list of the 20 most unstable U.S. housing markets, with 10 cities including the top spot. Key markets show declining home values, high shares of listings with price cuts, and weak projections. For example, Punta Gorda leads with a 5% loss over three months and a projected 12% annual decline. Other cities like Miami and Naples expect slight rebounds, while markets such as San Francisco and Austin face continued declines.