543 Halsey Neck Lane is a rare western-facing waterfront compound located within Southampton Village's prestigious Estate Section, spanning 4 acres+/- along Taylor Creek with 170' of water frontage+/-. Comprising a 4,300 SF+/- main residence, a 2,100 SF+/- detached guest house, and a 620 SF+/- detached cottage with an attached 2-car garage, the property totals 9,020 SF+/- across three distinct structures. Western exposure provides sunset views over the water, while a private dock, 20' x 40' waterside gunite pool, and sunken Har-Tru tennis court anchor the grounds, creating a thoughtfully composed estate that balances classic Hamptons character with comfortable, livable scale.