$13,495,000

54 Cobb Isle Rd Water Mill, NY 11976

Estimated payment $88,025/month

Total Views 5,420
6 Beds
9 Baths
7,300 Sq Ft
$1,849 Price per Sq Ft

Highlights

  • Property Fronts a Bay or Harbor
  • Heated In Ground Pool
  • Open Floorplan
  • Southampton High School Rated A
  • 1.3 Acre Lot
  • Wood Flooring

About This Home

Nestled on the coveted Cobb Isle in Water Mill, this exceptional estate commands 325 feet of spectacular waterfront on Mecox Bay, with sweeping vistas that extend to the Atlantic Ocean. Known affectionately as Ondine, the name itself evokes the spirit of the water, hinting at the property's stunning bayside location and the mythical water nymph of folklore. This is a rare offering of timeless luxury - effortlessly blending sophisticated living with its idyllic setting. Privately sited on a 1.3 acre +/- peninsula behind a gated entry, with irreplaceable positioning, the estate captures the essence of true Hamptons waterfront living - where legacy, lifestyle, and location converge. Owing to its grandfathered footprint, Ondine offers sightlines, vistas, and a connection to the bay that no new build can replicate. This singular advantage secures its place among the Hamptons' most valuable and enduring estates. Custom-built to celebrate its unrivaled surroundings, the 7,300 SF +/- residence delivers effortless flow across open, light-filled spaces, all meticulously oriented to maximize panoramic water views. Architectural highlights include a grand double-height French limestone foyer, Venetian plaster finishes, cove lighting, and a graceful curved staircase - all underscoring the estate's bespoke craftsmanship. The expansive, double-sized living room is anchored by a stunning limestone fireplace, creating a warm and inviting atmosphere for gatherings and relaxation. Two state-of-the-art kitchens, equipped with top-of-the-line appliances and bespoke finishes, cater effortlessly to both intimate family living and grand-scale entertaining. The expansive primary suite, with two sitting rooms, dual fireplaces, and a private gym, creates a sanctuary of comfort and refinement. Five additional en-suite bedrooms and a total of nine full bathrooms are purposefully designed to showcase awe-inspiring views throughout. Outdoor living unfolds seamlessly across expansive terraces, anchored by a waterside heated gunite pool surrounded by lush gardens. A deeded dock offers direct access to boating, paddleboarding, and jet skiing, with Flying Point Beach only minutes away by water. Completing the lifestyle amenities are an outdoor shower, a tiled and climate-controlled three-car garage with detailing bay, hot and cold water - ideal for car enthusiasts - and generous storage for recreational gear. Whether entertaining on a grand scale or savoring quiet, everyday moments, Ondine provides a lifestyle without compromise - the perfect backdrop for creating lasting memories. Cobb Isle Road is a private enclave, situated in the prestigious Water Mill Estate section, one of the Hamptons' most coveted addresses. Just 2.6 miles from Southampton Village's Main Street and 1.6 miles from the pristine Flying Point Beach, privacy here is paramount, yet conveniences remain effortlessly within reach. This is not just a home - it is a rare investment in irreplaceability. With no comparable opportunity to secure such proximity to the water, paired with immediate access to a fully realized luxury lifestyle - free from the multi-year hurdles of permitting and construction - Ondine stands alone. For those who seek to own what cannot be recreated - and to live immersed in nature's finest artistry - Ondine offers a magical, timeless opportunity for its next visionary owner.

Listing Agent

Jack Richardson

SERHANT. Listed on: 05/03/2025

SERHANT.

Co-Listing Agent

Ryan Serhant

SERHANT.

Home Details

Home Type

  • Single Family

Year Built

  • Built in 2003

Lot Details

  • 1.3 Acre Lot
  • Property Fronts a Bay or Harbor

Parking

  • 3 Car Attached Garage

Interior Spaces

  • 7,300 Sq Ft Home
  • 2-Story Property
  • Open Floorplan
  • 2 Fireplaces
  • Entrance Foyer
  • Family Room
  • Living Room
  • Dining Room
  • Den
  • Library
  • Wood Flooring
  • Bay Views

Bedrooms and Bathrooms

  • 6 Bedrooms
  • En-Suite Primary Bedroom
  • Walk-In Closet
  • 9 Full Bathrooms

Pool

  • Heated In Ground Pool
  • Gunite Pool

Outdoor Features

  • Patio

Utilities

  • Central Air
  • Septic Tank

Home Details

Home Type

Single Family

Year Built

Built in 2003

Lot Details

0

Parking

3

Listing Details

  • ExteriorPatio: Yes
  • FloorHardwood: Yes
  • HamletID: 0
  • HasCentralAC: Yes
  • InteriorAmps: 0
  • LandFrontageInFeet: 0
  • LandRentAmount: 0
  • Lot Size Acres: 1.30
  • Number Of Stories: 2
  • PercentageOfTaxThatIsDeductable: 0
  • PoolGunite: Yes
  • PoolHeated: Yes
  • PoolInground: Yes
  • PropertyCity: Water Mill
  • Property Class: 210
  • PropertyTownship: Southampton
  • Prop. Type: Residential
  • PropertyZipCode: 11976
  • PropertyZoneType: 0
  • Renovation Year: 0
  • Dining Room: Yes
  • En Suite Room: Yes
  • Family Room: Yes
  • Foyer: Yes
  • Kitchen: Yes
  • Library: Yes
  • Primary Bedroom: Yes
  • Walk In Closet: Yes
  • SForSaleAndRForRental: S
  • USStateAbbreviation: NY
  • ViewBay: Yes
  • WaterfrontBay: Yes
  • WaterSourceType: Municipal
  • Year Built: 2003
  • Special Features: None
  • Property Sub Type: Detached
  • Stories: 2

Interior Features

  • BasementAreaSquareFootage: 0
  • Kitchen Type: Open
  • Fireplaces: 2
  • Number of Rooms: 0
  • Rec Room Den: Yes
  • Living Room: Yes
  • AboveArea Sq Ft: 7300

Exterior Features

  • Waterfront Property: Yes

Garage/Parking

  • AttachedParking: 0
  • Garage Type: Attached
  • Numberof Garage Spaces: 3

Utilities

  • Sewer Type: Private Septic
  • Utilities: 0

Condo/Co-op/Association

  • HOA Fees: 0
  • Units in Building: 0

Schools

  • School District: Southampton
  • School District: Southampton

Lot Info

  • Number Of Lots: 0

Multi Family

  • Unit Number of Bedrooms: 6
  • Total Taxes: 0

Tax Info

  • Tax Year: 0

Map

Range of Values:

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Average Value
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Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2024 -- $5,902,000 $4,187,600 $1,714,400
2023 -- $5,902,000 $4,187,600 $1,714,400
2022 $27,198 $5,902,000 $4,187,600 $1,714,400
2021 $27,198 $5,902,000 $4,187,600 $1,714,400
2020 $23,669 $5,902,000 $4,187,600 $1,714,400
2019 $23,669 $0 $0 $0
2018 -- $5,818,700 $4,187,600 $1,631,100
2017 $25,270 $5,818,700 $4,187,600 $1,631,100
2016 $26,214 $5,818,700 $4,187,600 $1,631,100
2015 -- $5,818,700 $4,187,600 $1,631,100
2014 -- $5,818,700 $4,187,600 $1,631,100
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
05/03/2025 05/03/25 For Sale $13,495,000 -- $1,849 / Sq Ft
Source: NY State MLS

Mortgage History

Date Status Loan Amount Loan Type
Closed $500,000 Credit Line Revolving
Closed $14,603 New Conventional
Closed $75,000 Credit Line Revolving
Closed $1,500,000 Construction
Source: Public Records

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Source: NY State MLS

MLS Number: 11489509

NY State MLS

APN: 0900-160-00-03-00-011-002