Juan Beckmann Vidal, the heir to the Jose Cuervo tequila fortune, has been amassing a portfolio of commercial real estate in the United States over the last 15 years, according to a new report from Yahoo/Bloomberg.

He’s put together a portfolio that “that runs from Miami to Minneapolis”, according to the report. He has purchased and developed at least 5 million square feet (464,515 square meters), Bloomberg wrote on Thursday.

The business – which is known as Agave Holdings – has been backed completely by the Beckmanns and has not taken on outside investors. Its buildings are now worth more than $1 billion.