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MLS ID KEY1009662Last updated Oct 21, 2026

Single Family

45 Beach Lane

Active · Southampton · Suffolk County, NY 11978

Bedrooms
5 Beds
Bathrooms
8 Baths
Year built
1989
Est. monthly taxes
$3,226.08
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About this home

Located in the heart of Westhampton Beach Village, this extraordinary 9,500-square-foot estate is set on 1.20 beautifully landscaped acres, offering a rare blend of historic grandeur, modern comfort, and the quintessential Hamptons lifestyle. Rich in character and timeless elegance, the residence is introduced by a grand foyer that immediately sets the tone for the home's impressive scale. Beyond, an oversized historic ballroom serves as the centerpiece of the estate, featuring soaring ceilings, a wood-burning fireplace, floor-to-ceiling windows, and custom built-in bookshelves. Originally dating to the 1800s, this remarkable space is steeped in history and craftsmanship, with rich walnut millwork and architectural details that make it truly exceptional. Evoking the glamour and sophistication of the Great Gatsby style, the ballroom is an extraordinary setting designed for unforgettable entertaining and effortlessly accommodating everything from intimate gatherings and elegant dinner parties to grand-scale celebrations and lavish soirees. The main level offers a spacious living area, billiard room, full bath, an additional living space complete with a kitchenette and bar and a bedroom with en suite bath. An oversized formal dining room and separate breakfast area provide exceptional settings for hosting, while the den/great room, anchored by a wood-burning fireplace, creates a warm and inviting retreat. The chef's kitchen is appointed with granite countertops, maple cabinetry, an induction oven, and stainless-steel appliances. A laundry room and powder room complete the first floor. The second level is thoughtfully arranged into two distinct wings. The west wing guest quarters feature an own foyer leading to a full bath, sitting area, and bedroom. This wing also includes an office opening to an own balcony overlooking the beautifully manicured grounds, along with a sitting room, full bath, additional bedroom, and balcony access. The main second-floor wing showcases an expansive primary suite designed as an inclusive sanctuary, featuring a spacious sitting room, wood-burning fireplace, walk-in closet, spa-inspired bath, and a dramatic spiral staircase leading to a lofted retreat. An additional office completes this wing. A second primary suite offers its own sitting area and en suite bath, providing luxurious accommodations for all. Blending timeless Hamptons elegance, architectural character, and exceptional scale for both grand entertaining and private living, this distinguished estate presents a rare opportunity to own one of the area's most unique residences. Nestled among mature specimen trees and picturesque landscaping, the property also features a 20' x 40' in-ground pool, creating a tranquil resort-like setting for relaxation and entertaining. Set within one of Westhampton Beach’s most desirable locations, moments from renowned beaches, acclaimed dining, and boutique shopping, the property embodies the very best of Hamptons living.

Listing snapshot

Days on site
59 days
Listed on MLS
Jun 10, 2026
Full baths
6
Half baths
2
Annual property tax (MLS)
$38,713
Tax year
2025
Area source (MLS)
Public Records
Listing brokerage
Douglas Elliman Real Estate
MLS ID
KEY1009662
Last updated
Oct 21, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1989
Garage
Yes
Garage spaces
2
Parking
Attached
Water source
Public
Sewer
Septic Tank
Utilities
Cable Available, Cable Connected, Electricity Available, Electricity Connected

Interior features

Basement
Partial
Heating
Oil
Cooling
Central Air
Interior
Built-in Features, Central Vacuum, Eat-in Kitchen, Entrance Foyer, Granite Counters, High Ceilings, Speakers
Appliances
Dishwasher, Dryer, Microwave, Oven, Refrigerator, Stainless Steel Appliance(s), Washer
Fireplace
Yes
Fireplaces
3

Exterior features

Architectural style
Mini Estate
Construction materials
Cedar, Frame
Private pool
Yes

Schools (MLS)

Elementary school
Westhampton Beach Elem School
Elementary school district
Westhampton Beach
Middle school
Westhampton Middle School
Middle school district
Westhampton Beach
High school
Westhampton Beach Senior High Sch
High school district
Westhampton Beach

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. First seen on this site
  3. MLS status changed

Location

Southampton · Suffolk County, NY 11978Show interactive map
45 Beach Lane

Southampton · Suffolk County, NY 11978

Google Maps directions

Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.