Designer Linda Engler vividly remembers the moment she got a call from Cindy and Jeff Holker, who’d fallen in love with a neighborhood in Savannah, Georgia. “‘You’re not even going to believe this place, Linda,’” she recalls Jeff saying of the place he and Cindy were considering for a secondary home. “‘It’s surreal. You’ve got to come down and see it.’” A few days later, Engler and fellow designer Jenn Taft were there, at the Ford Field and River Club about 20 minutes from downtown Savannah, where homes are tucked away amid centuries-old live oak trees dripping with Spanish moss. “The setting and architecture were beautiful—it felt kind of like…