The news was first reported by Politico.
Rivera was a close ally of Rubio's during the latter's rise through the Florida political ranks. He has come under a cloud in recent years as the target of investigations into his alleged role in a plot to take down a Democratic challenger with a shadow campaign.
The sale frees Rubio of a concrete financial link to Rivera, seen as a potential snag in his bid for the presidency. It also closes the book on what was seen as a failed investment by the two Republicans.
A Rubio spokesman said he did not know who had purchased the home.