Introducing Westerleigh-a distinguished ESTATE with a rich history, named by Theodore Roosevelt's personal secretary. Nestled on just under 4.5 acres in the exclusive Mill Neck neighborhood and directly across from Oyster Bay Harbor, this multi-family compound offers both elegance and charm. The impressive main manor boasts 7 bedrooms, 5 full baths, 2 half baths, and 6 fireplaces, providing ample space and luxurious living. Complementing the main house is a delightful cottage-style residence featuring 5 bedrooms, 3 full baths, and 1 fireplace. The estate also includes stunning water views, an in-ground pool, a 6-stall horse barn with a paddock, and a tranquil pond-creating an equestrian paradise. This property presents a unique opportunity to renovate and personalize the main manor to fit your vision. Experience the potential to make Westerleigh your own private sanctuary. MANI HOUSE - Description FIRST Floor Front Entrance is a vestibule with powder room and large guest closet. Large Main Foyer front to back with Grand Staircase To the right of the main foyer is the living room with fireplace, French doors. To the left of the main foyer is the dining room with fireplace. After the dining room is the family room with fireplace, in addition has floor to ceiling built in wall units. Kitchen Large eat-in kitchen with fireplace, center island and breakfast area. Of the kitchen is the laundry room, maid's bedroom and full bathroom. SECOND Floor Master Suite with full bathroom and walk-in closet, fireplace. A bedroom with full bathroom, large walk-in closet, fireplace. Coming from the back staircase, an entrance to a second Master Suite/Caretaker suite with full bathroom. THIRD Floor Two Bedrooms, one full bathroom. A third bedroom with one half bath can be accessed through a doorway from the bedroom to the right when you are on the third-floor foyer. BASEMENT: Full unfinished basement.