Exceptional beach-block opportunity on an oversized 110' x 105' (11,550 SF) corner lot larger than more than 93% of Avalon's residential parcels. Just five homes from the beach, this extraordinary homesite offers ocean views and the opportunity to create a custom luxury estate with a resort-style pool, cabana, and expansive outdoor living. Over a quarter-acre of land is ample space for an expansive residence. Positioned across from Avalon's protected bird sanctuary, the property enjoys forever-preserved natural views, exceptional privacy, and one of the quietest beach-block settings on Seven Mile Island. Because the sanctuary interrupts 73rd Street, there is no roadway connecting Ocean Drive to Dune Drive at this location, resulting in significantly less through traffic than on most Avalon beach blocks. The beach at 73rd Street is known for its peaceful atmosphere and uncrowded shoreline. Existing driveways and curb cutouts on both Dune Drive and 73rd Street provide the rare advantage of dual street access. Seller will demolish the existing duplex prior to settlement, delivering a cleared, build-ready homesite. A truly rare offering one of Avalon's largest beach-block parcels in a premier location, offering the opportunity to create a legacy estate to be enjoyed for generations.