Ondine

Lux Architectural Sanctuary on Mecox Bay

  • Price$12,495,000
  • Bedrooms6
  • Bathrooms9
  • Interior7,300 sq ft
  • Land1.30 acres
Full specs (PDF)

One of Water Mill’s most coveted waterfront settings, 54 Cobb Isle Road pairs the effortless elegance of a private European seaside retreat with the exceptional comforts of Hamptons living.

Looking south across Mecox Bay toward the Atlantic Ocean, the estate enjoys an ever-changing panorama of water, sky, and light, with breathtaking views from nearly every room. Located south of the highway and approached by a long, gated drive, the exceptionally private property spans 1.3 +/- beautifully landscaped acres with approximately 325 feet of direct waterfront. Designed by architect John Himmelsbach, the approximately 7,000-square-foot residence offers six ensuite bedrooms, nine full baths, two beautifully appointed kitchens, and a climate-controlled three-car garage.

The setting

The front of the house, the motor court and the bay beyond the hedges

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Private & Secluded on Mecox Bay

One of Water Mill’s most coveted waterfront settings, 54 Cobb Isle pairs the effortless elegance of a private European seaside retreat with the exceptional comforts of Hamptons living.

The house and pool seen from across Mecox Bay

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325’ of Direct Waterfront

Equally compelling are the property’s grandfathered zoning rights that allow setbacks, sightlines, and a relationship with the water that simply could not be replicated today. Every sunrise feels like the beginning of a long-awaited holiday, every afternoon invites life on the water, and every sunset reminds you why extraordinary places become part of who we are.

The pool and limestone terrace with the bay beyond

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Exquisite Waterfront Estate

Outside, the grounds evoke a secluded waterfront resort. A 20-by-40-foot heated Gunite pool finished in shimmering Murano glass tile is surrounded by more than 1,500 square feet of limestone terracing. Lush gardens, mature specimen plantings, architectural lighting, integrated sound, and an outdoor shower complete a setting equally suited to lively entertaining and quiet afternoons by the water.

The upper terrace with loungers, looking over the bay

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Unparalleled Views

The thoughtfully designed open floor plan and expansive walls of glass keep the waterfront in constant view, while generous living and dining spaces flow onto terraces overlooking the bay.

The lawn and gardens along the bay at dusk

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A Rare Opportunity

Located South of the highway, the exceptionally private property spans 1.3 +/- beautifully landscaped acres with approximately 325 feet of direct waterfront. Designed by architect John Himmelsbach, the approximately 7,000-square-foot residence offers six ensuite bedrooms, nine full baths, two beautifully appointed kitchens, and a climate-controlled three-car garage.

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Interiors

A dramatic foyer introduces interiors distinguished by French limestone, Venetian plaster, a gracefully curved staircase, and a floor-to-ceiling limestone fireplace. The thoughtfully designed open floor plan and expansive walls of glass keep the waterfront in constant view, while generous living and dining spaces flow onto terraces overlooking the bay. Two premium kitchens support both everyday living and grand entertaining, with the first-level kitchen opening to the pool terrace for seamless outdoor gatherings. The primary suite is a private sanctuary featuring two sitting rooms, dual fireplaces, a private gym, and a luxurious spa bath. Five additional ensuite bedrooms provide inviting accommodations for family and guests, each reflecting the home’s attention to craftsmanship, comfort, and its extraordinary surroundings.

The gated driveway at dusk
The front of the house
The balcony over the bay
The pool and terrace
The pool lit at dusk
The patio at dusk
The view from the terrace
The grounds and gardens
The rear of the house from the lawn
Aerial view of the house and bay
Drone view of the peninsula
The landscaped grounds

Exteriors

Outside, the grounds evoke a secluded waterfront resort. A 20-by-40-foot heated Gunite pool finished in shimmering Murano glass tile is surrounded by more than 1,500 square feet of limestone terracing. Lush gardens, mature specimen plantings, architectural lighting, integrated sound, and an outdoor shower complete a setting equally suited to lively entertaining and quiet afternoons by the water. Deeded dock access adds another dimension to life on Mecox Bay, offering opportunities for boating, kayaking, and paddleboarding. The estate’s grandfathered zoning features further distinguish its relationship to the shoreline, contributing to a waterfront setting that would be difficult to recreate today.

Peaceful seclusion comes with convenient proximity to the best of the area: Southampton’s Main Street is approximately 2.6 miles away, and Flying Point Beach is approximately 1.6 miles from the property. With its remarkable water frontage, refined architecture, and established resort-style amenities, 54 Cobb Isle Road offers the opportunity to enjoy an exceptional Hamptons estate today, without the years required to permit and build anew—a place where legacy, lifestyle, and location converge.

The limestone terrace lit at night

See it in person.

Private showings are by appointment. Leave your details and a preferred time, or call James Peyton at (917) 882-5589.

Request a private showing

You will hear back to confirm a time. Prefer to call? James Peyton, (917) 882-5589.

Your details go straight to the listing team and are used only to arrange a showing of this property.