Sagapnack holds fame to being the “newest” villages on the east end. The village was in fact incorporated on September 2, 2005, in the wake of the failed attempt by Dunehampton, New York to incorporate. Dunehampton’s incorporation would have blocked Sagaponack from Atlantic Ocean beaches. The villages are seeking to address various beach issues including erosion arising from groynes at Georgica Pond in East Hampton (village), New York. One the biggest mansions in the world is the 100,000 square foot Ira Rennert home in Sagaponack.