In general, every MLS has geographic boundaries . . . . and more importantly, the Agent submitting the Listing must be Licensed in the jurisdiction where the property is located.
But as a practical matter, the South Africans probably have their own MLS (or MLSs), or equivalent listing System, just like the Aussies and Canadians and Filipinos.
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Dale C. Hittle of GOLDEN RULE PROPERTIES in Glover, Vermont
Where We're Always Striving To Put Together "THE FAIR DEAL"