Nestled down a long private driveway in the heart of Sagaponack, 121 Northwest Path offers the ultimate Hamptons retreat, just moments from Bridgehampton and Sag Harbor Village amenities and pristine ocean and bay beaches. Designed for privacy and leisure, the estate welcomes you with a long, tree-lined approach, ample parking, and a three-car garage. A stone pathway leads to the striking light-filled entry, while the expansive bluestone patio and resort-style Gunite pool and spa invite seamless indoor-outdoor living. Entertain effortlessly on the covered porch with a full outdoor kitchen, or gather with friends around the fire pit on the lower deck as the sun sets over the surrounding landscape. Inside, architectural elegance meets coastal warmth. The first level is bathed in natural light, featuring walls of glass, a sculptural staircase, and soaring double-height ceilings. The chef's kitchen is a masterpiece, boasting a large center island with bar seating, dual sinks, Sub-Zero and Wolf appliances, a wine fridge, and an ice maker. A pass-through gas fireplace connects the formal dining area to the living room, where French doors open to the patio and pool. The primary suite offers a private sanctuary with a gas fireplace, dual walk-in closets, a luxurious spa bath, and direct access to the grounds and a private balcony. A guest suite, elegant powder room, and a laundry room add thoughtful convenience. Upstairs, a lofted office and recreation space overlook the main level and open to an expansive balcony, while three guest suites-including a junior primary with private balcony and walk-in closet-ensure comfort for all. The finished lower level continues the theme of relaxed sophistication, offering a spacious recreation room, theater, full bath, and an additional guest suite with private access to the lower deck and fire pit area. Combining bold architecture, refined finishes, and proximity to the best of Sagaponack, this property delivers timeless Hamptons luxury just minutes from beaches, boutiques, and award-winning dining.