John Henderson Real Estate Professionals Mermaid Beach specialises in both residential and commercial property sales, property management and all aspects of real estate. Whether you are selling, buying or renting, we are the experts in the areas of Mermaid Beach, Mermaid Waters, Miami and Broadbeach. Family owned and operated since 1973, the business is run by brothers Luke and Andrew Henderson, who regularly give back to the community and are the major sponsors for local surf clubs Mermaid Beach, Miami and Nobby Beach.