Here’s another sign of growing demand in Miami-Dade County’s Doral suburb: A four-story office building that last sold for less than $6.3 million four years ago has traded at $13.1 million.

The property is Doral Commons, a 59,727-square foot Class A office building at 8550 NW 33rd St. near JC Bermudez Park. It commands rents of $25.50 per square foot and offers 207 parking spaces, a fountain, 98 percent occupancy and controlled access with a guard house.