498 Dune Road
Westhampton Beach, NY, 11978 $ 8,450,000
Bedrooms5 Baths5.1 Sq 5,037 Monthly Estimate*
$ 58,362
for $8,450,000 with 5 bedrooms and 5 full baths, 1 half bath. This 5,037 square foot home was built in 2026 on a lot size of 0.3.
Newly completed at 498 Dune Road, this five-bedroom bayfront residence is a collaboration between The Up Studio and First Dunes, pairing classic Hamptons coastal architecture with expansive views, thoughtful detailing, and construction designed for waterfront living. Set between Moriches Bay and the Atlantic Ocean, the property features direct bay frontage, a new dock to be built, and access to a private deeded ocean walkway shared with the neighboring property directly across Dune Road. A tri-gabled façade, stained cedar shingles, substantial exterior trim, and black standing-seam metal roof establish the home's traditional coastal character. Oversized Marvin Ultimate windows and sliding doors create an almost floor-to-ceiling connection with the outdoors, bringing exceptional natural light and views of the bay, ocean, and surrounding landscape throughout the residence. The open main level is oriented toward Moriches Bay, with kitchen, dining, and living spaces flowing directly to the elevated pool terrace. Imported Italian porcelain flooring with radiant heat extends throughout the principal living areas, while matching porcelain pavers continue outdoors. A locally fabricated custom kitchen features natural wood and white cabinetry, stone surfaces, a large center island, double 30-inch Gaggenau refrigerator/freezer columns, a 60-inch Thermador dual-fuel range, dual dishwashers, dual Kohler workstation sinks, pot filler, and custom ventilation. A custom white oak staircase with curved handrail, dark balusters, refined wall and ceiling millwork, and concealed storage anchors the double-height entry. The first floor also includes an en-suite guest bedroom, walk-in laundry room, cabana bath, and outdoor shower. Upstairs are four additional en-suite bedrooms. The primary suite features vaulted white oak ceilings, oversized bay-facing windows and doors, and a private waterfront balcony. Its bath includes nearly floor-to-ceiling windows framing Moriches Bay, vaulted wood ceilings, porcelain slab surfaces, radiant heated floors, a custom double vanity, freestanding tub, and expansive Kohler-equipped steam shower. Two additional suites face the Atlantic through oversized Marvin windows, while another overlooks the bay. Outside, a gunite pool and integrated hot tub overlook a landscaped lawn and bayfront. A recently maintained NYS DEC-permitted revetment protects the shoreline. Built by First Dunes with an emphasis on durability and everyday usability, the fully sprinklered home includes a pile-supported concrete foundation, FEMA-compliant concrete-enclosed lower level, two-car garage with EV charging, Mitsubishi Hyper Heat systems, energy-recovery ventilation, high-capacity hot water, 300-amp electrical service, and generator provisions. 498 Dune Road is traditional in character, contemporary in the way it opens to light and water, and designed specifically for life between the bay and ocean.
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FeaturesInteriorInterior Amenities First Floor Bedroom First Floor Full Bath Open Kitchen
Basement Full
Flooring Hardwood
Basement Features Full
Basement (Y/N) Y
Half Baths 1
Total Bedrooms 5
Total Baths 6
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GeneralSewer Septic Tank
Heating Hot Air
Cooling Central Air
Utilities Cable Connected Electricity Connected Sewer Connected Water Connected
Appliances Dishwasher Microwave Oven Refrigerator Stainless Steel Appliance(s) Washer
Garage Spaces 2
Architectural Style Contemporary
Pool Features In Ground Infinity
Construction Materials Cedar Shake Siding
Year Built 2026
View Water
Property Subtype Single Family Residence
Tax Year 0
Parcel Number 0905-016.00-01.00-019.001
Waterfront Features Bayfront Waterfront
County Suffolk County
Property Type Residential
HOA N
Garage Y/N Y
Total Rooms 10
Full Baths 5
High School Westhampton Beach Senior High Sch
City Southampton
Senior Community Y/N N
High School District Westhampton Beach
Carport Y/N N
Elementary School Westhampton Beach Elem School
Property Attached Y/N N
Tax Annual Amount 0
Middle/Junior High School Westhampton Middle School
Additional Parcels Y/N N
Building Area Units Square Feet
Standard Status Active
Middle/Junior School District Westhampton Beach
Elementary School District Westhampton Beach
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ExteriorExterior Amenities Dock
Parking Features Attached Attached
Water Source Public
Total Parking 2
Parking Spaces 2
Waterfront Y/N Y
Horse Y/N N
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* Excluded FeaturesList BySerhant East End LlcBroker
Affordability Calculator
- Monthly Principal & Interest
- $58,362
- Monthly Property Taxes
- --
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 7.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Westhampton Beach, NY
Average List Price $4,543,605
Percent of Sale Price 46%
About Westhampton Beach, NY 3,480 Population
-2% Since 2002
$ 87,481 Median Income
44.5 Median Age
27% Households with Children
Trends Information provided by ATTOM Data Solutions.
4099604 Elementary School
4099415 Middle School
Westhampton Beach Senior High Sch High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 10/13/2026 | $8,450,000 | | Listed Price |