"That's what's appealing to investors," Brad Capas, senior vice president of Apartment Realty Advisors' Florida office, tells GlobeSt.com. M/PF Research has even placed the county in the top 10 rental apartment investment markets in the country for this year, the report states.

"Investors have always looked to South Florida," Capas says. "What's happened recently is other options are less appealing," because other areas of the country are overbuilt, or the downturn in the economy has affected other areas more than South Florida. "There's a lack of alternative appealing investment markets right now."

In addition, the South Florida apartment market has been faring pretty well. "Our apartment market has weathered the downturn in the economy much better" than other areas of the country, Capas says.