This story is available exclusively to Business Insider subscribers. A decade ago, those visitors were mostly from Southern cities within driving distance, like Atlanta and Nashville, local real-estate agent Beau Blankenship told Business Insider. Sunset over Rosemary Beach, Florida, in 30A. The boom, Stewart told Business Insider, had two inflection points. Advertisement"There'd be a few vacant lots, and then a house surrounded by trees and brush," he told Business Insider.

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Persons: —, Mexico —, Beau Blankenship, It's, Rosemary, Barry Winiker, Blankenship, Alys, Christian Blouin, Kemp Stewart, Rosemary Beach, Stewart, Truman, Kemp, hasn't Organizations: Service, Panama City Beach, Business, Hamptons, Street, The New York Times, Management, BI Locations: Florida, Rosemary, Seaside, Santa Rosa, Mexico, Destin, Panama, Southern, Atlanta, Nashville, Salt Lake City , Utah , Colorado, Walton County, Rosemary Beach , Florida, Inlet Beach, Chicago, Montana, Santa Rosa Beach, Oklahoma, Alys