MIAMI—The new condo developments just keep springing up in South Florida. Four new condo towers—two in South Beach and another two on Brickell Avenue—are in the works. That brings the number of planned buildings to 50 since the real estate bubble busted in 2007. So says a report from CondoVultures.

Altogether, more than 8,600 condo units are proposed for Miami, Broward and Palm Beach counties, according to the Preconstruction Condo Projects list compiled by the licensed Florida brokerage CVR Realty. Peter Zalewski, principal analyst at CondoVultures, tells GlobeSt.com he expects that number to rise to about 10,000 by the end of the year.

“There are still about 3,400 unsold condo units from the boom in the Tri-County area,” Zalewski says. “We are aware of another nine projects that haven’t formally announced yet. So it’s likely that we’ll have three times the amount of inventory going up as what’s unsold by the end of the year.”