Coronavirus took its toll on South Florida’s residential markets in the second quarter, with double-digit declines in Miami-Dade, Broward and Palm Beach counties.

Miami-Dade condo sales fared the worst, with sales dollar volume and closings falling by nearly half. Single-family home sales dropped by more than 30 percent in each county, year-over-year, according to the Miami Association of Realtors.

Luxury brokers have pointed to an increase in home sales in waterfront markets such as Miami Beach ...