Realtor.com
Billionaire businessman Ira Rennert, 90, bought his property in Sagaponack in the early 1990s, and has since turned it into a huge estate.
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Inside the Hamptons’ Most Expensive Home: $425 Million 110,000-Square-Foot Estate Is Owned by Billionaire Tied Up in Lead Poisoning Scandal
Brittany Natale
07:19
Billionaire businessman Ira Rennert, 90, bought his property in Sagaponack in the early 1990s, and has since turned it into a huge estate.
