by RH Advisors
For Sale
For Rent
Blog
Property Records
Schools
SEARCH
Property Records
For Sale
For Rent
MORE
Blog
Schools
See Home Value
Westhampton Beach 11978
355 Dune Rd
Photo of 355 Dune Rd
Sold on Apr 10, 2026

30

Map

Photo of 355 Dune Rd
Photo of 355 Dune Rd
$5,400,000
● House - Off Market

355 Dune Rd

Southampton, NY 11978
bedrooms
5 Beds
bathrooms
4 Baths
square feet
1,536 Ft²
$34,364
Est. Monthly
1.21%
Cap Rate

About This Property

Oceanfront on Dune Road, this updated beach cottage offers over 100 feet of direct ocean frontage and sits on an acre with sweeping views of both the ocean and the bay. The open-concept interior features vaulted ceilings, abundant natural light, and a spacious kitchen with high-end appliances and a large island perfect for entertaining. With 5 bedrooms and 4 full baths, three of which are ensuite, the layout is designed for relaxed coastal living.  Step outside to enjoy a private walkway to the beach or unwind by the beautifully designed gunite pool, complete with a surrounding patio and a dedicated cabana for relaxing or hosting. The oversized lot offers potential to expand the existing home or build new on a generous envelope.  Additional features include a newer roof and siding, an elevator, two-car garage, and a convenient laundry area.  Set on a prime stretch of Dune Road, this property offers privacy, oceanfront lifestyle, and future potential, an exceptional opportunity in Westhampton Beach Village.
Unit Size
1,536 Ft²
Days on Market
298 days
Land Size
1.45 acres
Price per sqft
$3,905
Property Type
House
Property Taxes
$4,913
HOA Dues
-
Year Built
2005

Payment Calculator

Home Price
Down Payment
%
Loan Term
Interest %

Your Estimated Monthly Payment

Principal + Interest:
Property Tax:
HOA:
Home Insurance:
Mortgage Insurance:

Cap Rate Calculator

Purchase Price
Monthly Property Taxes
Monthly Rental Income
Maintenance & HOA
Income Per Year
Expenses Per Year
Operating Profit Per Year
Cap Rate 100% Occupancy
N/A (extreme outlier)

What does this mean?

Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.

How much can I actually make?

Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.

How is cap rate calculated?

Cap Rate = Net Operating Income (NOI) / Property Asset Value.

When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.

Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.

Last updated: 7 months ago (OneKey MLS #KEY868586)

Price History

Date / Event Date Event Price
Apr 10, 2026 Sold
Premium
Sold
Mar 26, 2026 In contract -
In contract
Mar 17, 2026 Relisted $5,998,000
Relisted
Mar 16, 2026 No longer available -
No longer available
May 29, 2025 Listed by Daniel Gale Sothebys Intl Rlty $5,998,000
Listed by Daniel Gale Sothebys Intl Rlty

Property Highlights

Elevator
Air Conditioning
With View
Fireplace

Building Info

Overview

    General

  • Year Built: 2005
  • Effective Year Built: 2005
  • Bedroom Count: 5
  • Bathroom Count: 4
  • Full Bathrooms: 4
  • Partial Bathrooms: 4
  • Building Condition: 6
  • Building Quality: 7
  • Construction Type: 0
  • Building Style: 11
  • Exterior Walls Type: 17
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Count: 100
  • Floor Cover: 0
  • Basement Type: 6
  • Basement Area: 0
  • Garage Type: 17
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 7
  • Pool Type: 8

    Dimensions

  • Lot Size Square Feet: 44,431
  • Total Building Area: 1,536
  • Building Area: 1,536
  • Building Area Measurement: L

    Heating and Cooling

  • Fireplace Count: 1
  • Air Conditioning: 0
  • Heating: 4
  • Heated Square Feet: 1,536
  • Heating Fuel Type: 6

    Utilities

  • Sewer System: 4
  • Water Service: 2

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000001020
  • Standard Land Use Code: 1001
  • County Land Use Code: 210
  • Legal Description 1: N-DUNE RD S-OCEAN & ORS E-SIEGEL W-SIMON

Neighborhood

  • School District Name: Westhampton Beach Union Free School District
  • School Tax School District: WESTHAMPTON BEA
  • Census Tract: 190502

Zoning

  • Zoning: R3

Geography

  • District: 0905-0
  • Section: 18.00
  • Parcel: 0905-018.00-02.00-005.000
  • Block: 2
  • Lot: 5.000
  • Municipality: SOUTHAMPTON
  • Latitude: 40.7905
  • Longitude: -72.6594

    Address

  • Full Address: 355 Dune Rd
  • Address - House Number: 355
  • Address - Street Name: Dune
  • Address - Suffix Type: Rd
  • State: NY
  • City Name: Westhampton Beach
  • Carrier Code: C090
  • 4-Digit Zip Code: 2943
  • Zip Code: 11978

Valuation

    Tax

  • Tax Year: 2023
  • Tax Amount: $1,264,916
  • Tax Rate Code Area: 473602

    Appraisal Valuation

  • Standard Deviation: 0.1442
  • Valuation Date: Feb 14, 2024
  • Confidence Score: 82
  • Final Value: 30,267
  • High Value: 34,633
  • Low Value: 25,900

    Market Valuation

  • Market Total Value: $6,491,223
  • Market Land Value: $2,081,849
  • Market Improvement Value: $4,409,374

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $4,511,400
  • Assessed Land Value: $1,446,885
  • Assessed Improvements Value: $3,064,515
Data used for valuation calculations is provided by RealtyHop, and other third party sources
Request mortgage information redaction

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Westhampton Beach

Stats & Trends

Median Asking:

$1,822,500

Sale Price/ft²

$963

Below Asking

0.02%

Average Days on Market

112

Average Home Size

3413 ft²

Average Home Age

35.4 years

Currently For Sale

30 Listings
Based on RH Advisors, Inc. calculations of home data from MLS and/or public records.

Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 9 Ocame Avenue, Westhampton Beach, NY, 11978

$10,000 /mo

  • 4 Beds
  • 3 Baths
  • 1,823 ft²
9 Ocame Avenue, Westhampton Beach, NY, 11978 Listing by Deborah A. Pirro C2EX
Unit for rent at 64 Aspatuck Road, Westhampton Beach, NY, 11978

$10,000 /mo

  • 4 Beds
  • 3 Baths
  • 2,157 ft²
64 Aspatuck Road, Westhampton Beach, NY, 11978 Listing by Lisa Maysonet
Unit for rent at 60 Aspatuck Road, Westhampton Beach, NY, 11978

$10,000 /mo

  • 4 Beds
  • 3 Baths
  • 2,150 ft²
60 Aspatuck Road, Westhampton Beach, NY, 11978 Listing by Dawn M. Litel Murphy

Rentals Near You

Click here to view more rentals in the neighborhood.
OneKey

Last Updated: 7 months ago
Data Source: OneKey MLS

Frequently Asked Questions

When was property at 355 Dune Road built and last sold?
The property at 355 Dune Road was built in 2005 and last sold on Jan 1, 1970 for $0.
How much is this home worth?
The estimated value of the home located at 355 Dune Road is $0.
What are some comparable homes to 355 Dune Road?
There are currently no comparable homes to 355 Dune Road.
Recent Neighborhood News
Haunted NYC Real Estate: 6 Spooky Stories Behind the Addresses
Lake House Prices Near NYC in 2026: What Waterfront Actually Costs (Labor Day Buyer's Guide)
9 New York City Seafood and Raw Bars
Why Some NYC Tenement Apartments Had Bathtubs in the Kitchen
Popular Searches
Southampton Homes for Sale
Southampton Houses for Sale
Southampton Condos for Sale
Southampton Co-Ops for Sale
Southampton Townhouses for Sale
Southampton Multifamily for Sale
Southampton Land for Sale
Southampton Commercial for Sale
Nearby Cities
Coram Homes for Sale
Bridgeport Homes for Sale
Shirley Homes for Sale
Brentwood Homes for Sale
Central Islip Homes for Sale
Centereach Homes for Sale
New Haven Homes for Sale
Mastic Beach Homes for Sale
Nearby Property Records
Suffolk County, NY Property Records
New Haven County, CT Property Records
Middlesex County, CT Property Records
New London County, CT Property Records
Fairfield County, CT Property Records
Nassau County, NY Property Records
Washington County, RI Property Records
Hartford County, CT Property Records
Neighborhoods
North End Real Estate
Woodmont Real Estate
Devon - Walnut Beach Real Estate
Brooklawn - St. Vincent Real Estate
Stratfield Village Real Estate
Parkway - Wheelers Farm Road Real Estate
North Bridgeport Real Estate
Downtown Milford - Harbor - Post Road South Real Estate
Nearby Counties
Brookhaven Homes for Sale
Islip Homes for Sale
Smithtown Homes for Sale
Riverhead Homes for Sale
Southold Homes for Sale
Bridgeport Homes for Sale
New Haven Homes for Sale
East Hampton Homes for Sale
Top Real Estate Agents
Top Agents in Southampton
Top Agents in Brookhaven
Top Agents in Islip
Top Agents in Smithtown
Top Agents in Riverhead
Top Agents in 11706
Top Agents in Coram
Top Agents in 11772