Welcome to This Stunning Postmodern Masterpiece in Half Hollow Hills SD. Impeccably improved and maintained by its original owner since 2001, this exceptional 5-bedroom, single-family residence offers the perfect blend of grand design, modern luxury, and total privacy. Set on a generous lot with a sweeping driveway, the home makes a statement from the moment you arrive — and delivers on every promise once inside. A commanding two-story foyer and elegant sweeping staircase set the tone, flowing into expansive formal living and dining rooms. The heart of the home is a chef's kitchen equipped with premium Sub-Zero appliances, a breakfast bar, and a casual dining area that opens seamlessly into a warm, inviting den — all overlooking a spectacular backyard retreat complete with a large patio, a fully equipped outdoor kitchen, and a sparkling in-ground pool. A versatile first-floor bedroom suite with a private bath and separate entrance offers endless flexibility — whether as a home office, nanny suite, or in-law accommodations. A dedicated pantry, laundry room, and an oversized 3-car garage round out the main level. Upstairs, the primary suite is a true sanctuary, featuring dual walk-in closets and a spacious ensuite bath. Three additional generously sized bedrooms, a large shared bath, and a bonus space provide room for everyone and everything. The fully finished basement with high ceilings effectively doubles the home's living space — ready to become a home theater, gym, playroom, or whatever suits your lifestyle. Basement is accessible by legal outside entrance. Located in the highly coveted Half Hollow Hills School District, this one-owner gem offers the privacy, space, and luxury today's discerning buyer demands.
Single-familyProperty Type
2002Year Built
1.33 acresLot Size
$511Price/Sq.Ft.
3 garage spacesParking
Listing by Melissa DAngelo• Compass Greater NY LLC
Listing by Jean Marie Blissett• Compass Greater NY LLC
Est. $2,659 per month, based on comparable rentals
Sale and tax history for 129 Round Swamp Rd
Sale History
Tax History
Date
Event
Price
OneKey® MLS as Distributed by MLS Grid #979531
Aug 21, 2026
Sold
$2,045,000
$511/sq ft
Jun 17, 2026
Pending
—
May 4, 2026
Price Changed
$2,250,000
$563/sq ft
Apr 1, 2026
Listed
$2,500,000
$625/sq ft
Public Records
Jun 21, 2000
Sold
$200,000
$50/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$30,948
$550 + $7,250
$7,800
2025
$30,948 (+3.6%)
$550 + $7,250
$7,800
2024
$29,886 (+6.8%)
$550 + $7,250
$7,800
2023
$27,971 (+2.9%)
$550 + $7,250
$7,800
2022
$27,191
$550 + $7,250
$7,800
2021
$27,191 (+1.9%)
$550 + $7,250
$7,800
2020
$26,673 (−49.5%)
$550 + $7,250
$7,800
2019
$52,777 (+104.6%)
$550 + $7,250
$7,800
2018
$25,791 (+3.0%)
$550 + $7,250
$7,800
2017
$25,028 (+1.9%)
$550 + $7,250
$7,800
2016
$24,550 (+3.3%)
$550 + $7,250
$7,800
2015
$23,759 (−14.8%)
$550 + $7,250
$7,800
2014
$27,872 (+3.2%)
$550 + $9,000
$9,550
2013
$27,007 (+4.0%)
$550 + $9,000
$9,550
2012
$25,959 (+5.7%)
$550 + $9,000
$9,550
2011
$24,564 (+4.6%)
$550 + $9,000
$9,550
2010
$23,491 (+2.1%)
$550 + $9,000
$9,550
2009
$23,011
$550 + $9,000
$9,550
Public record
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
1.33 Acres
Year renovated
—
Sq. Ft.
—
Year built
—
Style
Single Family Residential
County
Suffolk County
APN
0400227000100036000
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 31, 2026.
Property details
Parking
Parking Information
Carport YN: No
Parking Total: 20
Parking Features: Driveway, Garage, Off Street, Private
Garage Information
Garage Spaces: 3
Has Garage
Interior
Fireplace Information
Has Fireplace
Fireplaces Total: 1
Fireplace Features: Wood Burning
Heating & Cooling
Cooling: Central Air
Heating: Forced Air, Natural Gas
Interior Features
Interior Features: First Floor Bedroom,First Floor Full Bath,Cathedral Ceiling(s),Ceiling Fan(s),Central Vacuum,Chandelier,Chefs Kitchen,Crown Molding,Double Vanity,Eat-in Kitchen,ENERGY STAR Qualified Door(s),Entrance Foyer,Formal Dining,Granite Counters,High Ceilings,High Speed Internet,His and Hers Closets,In-Law Floorplan,Kitchen Island,Open Floorplan,Open Kitchen,Pantry,Primary Bathroom,Recessed Lighting,Smart Thermostat,Soaking Tub,Sound System,Storage,Tray Ceiling(s),Walk-In Closet(s),Washer/Dryer Hookup,Wired for Sound
Window Features: Double Pane Windows
Laundry Features: Electric Dryer Hookup, Laundry Room
Appliances: Cooktop, Dishwasher, Dryer, ENERGY STAR Qualified Appliances, Gas Oven, Microwave, Oven, Refrigerator, Stainless Steel Appliance(s), Washer, Water Purifier Owned
Lot Features: Back Yard, Cleared, Front Yard, Garden, Landscaped, Private
Property Information
Living Area Source: Other
Living Area (Sq. Ft.): 4000.00
Building Area Total (Sq. Ft.): 6000.00
Building Area Source: Other
Property Sub Type: Single Family Residence
Financial
Tax Information
Tax Year: 2025
Tax Source: Municipality
Tax Annual Amount: $30,947.54
Financial Information
Buyer Financing: ARM
Utilities
Utility Information
Sewer: Septic Tank
Utilities: Cable Connected, Electricity Available, Natural Gas Connected, Sewer Connected, Water Available, Water Connected
Location
School Information
Elementary School: Sunquam Elementary School
Elementary School District: Half Hollow Hills
Middle Or Junior School: West Hollow Middle School
Middle Or Junior School District: Half Hollow Hills
High School: Half Hollow Hills High School East
High School District: Half Hollow Hills
Location Information
County Or Parish: Suffolk County
Public facts
Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: 1.33 acres
Style: Single Family Residential
Year Built: —
Year Renovated: —
County: Suffolk County
APN: 0400227000100036000
Home facts updated by county records on Aug 31, 2026
Around this home
Schools
Sunquam Elementary School
Public K-5 • Assigned • 1.8mi
8/10
West Hollow Middle School
Public 6-8 • Assigned • 3.3mi
7/10
Half Hollow Hills High School East
Public 9-12 • Assigned • 4.6mi
9/10
Provided by GreatSchools
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
5/10 Heat Factor
7 days above 97° expected this year, 15 days in 30 years
6/10 Wind Factor
70% chance of strong winds in next 30 years
4/10 Air Factor
4 unhealthy days expected this year, 5 days in 30 years
Provided by First Street
Historical weather
Huntington, NY • 11743
Average low and high temperatures (°F)
35
23
38
24
52
35
61
44
69
53
80
63
84
69
80
63
75
60
66
50
54
40
41
28
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
88/ 100
Very good sunlight
Sunscore
This home ranks in the top 25% for direct sun exposure in Huntington. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.3 hrs
5.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.98M – $2.40M
Reach more buyers when you sell with Redfin. Plus, you'll save $20,873 in fees.