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21 Seafield LaneWesthampton Beach, NY 11978

For Sale

$4,600,000

Smart Buyer Rebate $46,000

Westhampton Beach Estate Section
Located on one of the village's most prestigious lanes, in the heart of Westhampton Beach's estate section, this gracious home is just moments from Main Street. Built in 1930 and expanded in 1994, the seven-bedroom residence pairs beautiful original architectural details with a contemporary sense of space. A welcoming foyer opens to an expansive living room with beamed ceilings and an original marble fireplace, flowing into a distinctive octagonal sunroom and wraparound three-season porch. The main level also features a spacious dining room with bay windows and marble fireplace, connecting to the eat-in kitchen. Upstairs are seven bedrooms, most with en-suite baths, including a separate primary suite with an adjoining office and private staircase. Outside, a large deck provides plenty of room for dining and relaxing, while the gunite pool and surrounding deck create an inviting setting for summer days. A detached two-car garage, originally the property's carriage house, adds to the home's character. With its exceptional location, generous proportions, and original details, this is a rare opportunity to make a classic Westhampton Beach residence your own.

Listed by Amanda M. Murray

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Corcoran

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917-328-0848

Listed by Robert Murray CPM

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Corcoran

Last updated September 12, 2026

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Source: OneKey #1044207

Listing Facts

  • TypeSingle-family
  • NeighborhoodThe Hamptons
  • Bedrooms7
  • Bathrooms7
  • Days on Prevu18
  • Taxes$37,488/year
  • Size6,941 sqft
  • Price per sqft$663

Amenities

  • Dishwasher
  • Washer/Dryer
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

08/28/2026
Listed by Corcoran
$4,600,000
  1. 08/28/2026$4,600,000
    Listed by Corcoran

Property Details for 21 Seafield Lane

Exterior

Construction

  • Year Built: 1930
  • Architectural Style: Colonial
  • Construction Materials: Frame

Features

  • Direction Faces: East
  • Pool Private: Yes

Measurements

  • Building Area Total: 6,941
  • Building Area Units: Square Feet
  • Lot Size Acres: 1.02
  • Lot Size Square Feet: 44,431

Financial

Taxes

  • Parcel Number: 0905-014-00-01-00-009-000
  • Tax Annual Amount: $37,488.00
  • Tax Assessed Value: $3,186,900.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Dryer, Oven, Refrigerator, Washer
  • Fireplace: Yes
  • Interior Features: Beamed Ceilings, Eat-in Kitchen, Entrance Foyer, Formal Dining, In-Law Floorplan, Original Details

Measurements

  • Living Area: 6,941
  • Living Area Source: Public Records

Rooms

  • Basement: Partial
  • Has Basement: Yes
  • Bathrooms Full: 5
  • Bathrooms Half: 2
  • Bathrooms Total Integer: 7
  • Bedrooms Total: 7
  • Rooms Total: 16

Parking

Parking

  • Garage Spaces: 3
  • Garage: Yes
  • Parking Features: Detached, Garage

Schools

Elementary School

  • Elementary School: Westhampton Beach Elem School
  • Elementary School District: Westhampton Beach

High School

  • High School: Westhampton Beach Senior High Sch
  • High School District: Westhampton Beach

Middle or Junior School

  • Middle Or Junior School: Westhampton Middle School
  • Middle Or Junior School District: Westhampton Beach

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Oil
  • Sewer: Cesspool
  • Utilities: Electricity Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 7 bedrooms and 7 bathrooms in this single-family home at 21 Seafield Lane.

What schools are nearby to 21 Seafield Lane?

Nearby schools include the Westhampton Beach Elem School Elementary School, Westhampton Middle School, and Westhampton Beach Senior High Sch.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 21 Seafield Lane.

What are the annual taxes for 21 Seafield Lane?

Annual taxes for this single-family home are estimated at $37,488.

How does 21 Seafield Lane compare to other single-family homes in The Hamptons?

This single-family home is listed 6% above the average price for single-family homes in The Hamptons and has been on the market for 129 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 6,941 sqft.

21 Seafield Lane is a 7-bedroom, 7-bath single-family home for sale in Westhampton Beach NY 11978. On Prevu for 18 days at $4,600,000. This property features 6,941 square feet of living space, located in The Hamptons. The median listing price for single-family homes in this area is $2,395,000. Nearby schools include Westhampton Beach Elem School Elementary School, Westhampton Middle School, and Westhampton Beach Senior High Sch. Additional amenities include dishwasher, air conditioning, parking, and washer/dryer. Explore more single-family home listings in Suffolk County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.