House prices are at the bottom of the barrell in the old steel and industrial cities(wastelands) of the north. I own a home in Buffalo, NY. The market there is very low as hell. Detroit is an absolute hellhole. If you plan on moving there, you better bring plenty of ammunition with you because the place is a literal warzone. Cops there usually ride 4-deep. Detroit used to be the showcase of the US's industrial might and was often the very first place that foreign diplomats were often shown when visiting.
Prices are finally falling in south Florida, though they are still stupidly high. Why anyone would get a mortgage for more than 10x what they make in a year is beyond me. Dozens of "what if" factors that can cause them to lose everything. Another nasty downside to this is the Section 8 and 32 factors. Regular families will plop down everything they have to acquire a condo or townhome, while some real estate flipping company buys out around 80% of the properties. When the properties drop in value, the company opens up their units to State Housing and in comes the Section 8 people and the remaining 20% are stuck with rapidly depreciating property values and rowdy neighbors.