A few years down the line, if Matias Koretzky succeeds and his startup sells for several million dollars, many in Miami’s real estate industry will read about the simple idea that made him rich and wonder why on Earth they didn’t come up with it first.

In a booming South Florida real estate market boosted in large part by Latin American buyers, Koretzky is pushing a unique service: a sleek website that connects brokers in the region with serious investors in Argentina, Brazil and elsewhere and gets the ball rolling on future transactions.