6. Sullivan's Island, South Carolina
List price: $4.2 million
Carolina One Realtor Everett Presson says he isn't just the listing agent for this 4-bedroom, 3 1/2-bath Carolina coastal charmer; he's also the owner.
Built in 2006, Presson's 4,413-square-foot contemporary features a metal roof, beamed ceilings, open-concept kitchen, infinity-edge pool, boat dock and a serene garden entrance with koi pond.
The Charleston, South Carolina, native has seen Sullivan's Island prices grow as demand outpaced supply. "The inventory has been low for some time," he says. "We have 900 houses on the island and 38 for sale right now."
Realtor.com puts the average home price at a whopping $1,670,000.
What makes Sullivan's Island special?
The island's 1,800 residents prize their paradise. Local zoning won't allow subdivision, the minimum lot size is 0.5 acres, height is restricted to 38 feet and no home can exceed 5,600 square feet.
"We were losing so many of our charming beach houses to people building mega-mansions, so we just put a stop to it," Presson explains.
A more puzzling challenge? Post-Civil War jetties installed at the mouth of Charleston Harbor have caused sand to accrete (build up) on the island's Atlantic shore, sprouting forests in the process. Presson says locals are divided, pro-tree versus pro-view.