Off market dec 2024 for $21M

$8,283,119

•

—

sq ft

75 Post Rd, Old Westbury, NY 11568

About this home

Completed in 1935, "Erchless" is the consummate 92-acre Gold Coast estate is replete with a magnificent twenty-six room Georgian-style mansion that is a work of art. Refined elegance is woven into the original details and finishes maintained to perfection. Complemented by a sparkling heated swimming pool, two pagoda-style cabanas, a tennis court, greenhouses and potting sheds, a horse stable, turnout paddock and numerous barns. Superintendent's house and chauffer's house with a garage. Delightful garden rooms layered with flowering plantings and hardscape. The award-winning rhododendron garden is considered to be the finest of its kind in the Northeast United States. Central air conditioning and elevator. Four-car attached garage. A preeminent property where gracious living and entertaining endure. Masterpiece Listing, Additional information: Appearance:Diamond,ExterioFeatures:Tennis,Interior Features:Guest Quarters,Marble Bath,Separate Hotwater Heater:Yes

Single-familyProperty Type

1936Year Built

92.7 acresLot Size

Listing by Lois Kirschenbaum • Daniel Gale Sothebys Intl Rlty

Contact: 516-626-7600

Bought with Maria Babaev • Douglas Elliman Real Estate

Redfin checked: 2 minutes ago

•Source:OneKey® MLS as Distributed by MLS Grid #L3532656

Redfin Estimate

$8,283,119

$12.7M since sold in December 2024$214K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 128.3% higher than the average sale price ($3.63M) of 6 comparable homes.

SOLD JAN 30, 2026
$3,875,000
A
6 beds8.5 baths5,600 sq ft
80 Wheatley Rd, Old Westbury, NY 11568
Listing by Daniel Gale Sothebys Intl Rlty
SOLD MAY 26, 2026
$1,575,000
B
7 beds5.5 baths9,076 sq ft
2 Langley Ln, Old Westbury, NY 11568
Listing by Four Seasons Realty Team
SOLD AUG 17, 2026
$6,825,000
C
6 beds6.5 baths6,326 sq ft
22 Terrace Ct, Old Westbury, NY 11568
Listing by Nest Seekers LLC
SOLD MAY 19, 2026
$3,050,000
D
5 beds5 baths4,290 sq ft
9 Meadowbrook Ln, Old Westbury, NY 11568
Listing by Compass Greater NY LLC
SOLD APR 2, 2026
$940,000
E
5 beds5 baths2,740 sq ft
7 Rugby Rd, Westbury, NY 11590
Listing by Handsome Real Estate Inc
SOLD MAY 11, 2026
$5,500,000
F
7 beds7.5 baths7,250 sq ft
8 Tatem Way, Old Westbury, NY 11568
Listing by Keller Williams Points North

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Earn from this home

Sell

−$8,431,417

Est. take-home

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Rent

$4,607/mo

Redfin rental estimate

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Market trends in 11568, NY

Last updated September 2026

Buyer's Market

Seller's Market

Buyer's market

Sale-to-List Price

92.7%

0.8% MoM

Median sale price

$2.5M

$990K MoM

Avg. days on market

133d

1 days MoM

Recently sold homes

2 MoM

New listings for sale

$4,650,000
5 beds6 baths6,529 sq ft
11 Surrey Ln, Old Westbury, NY 11568
Listing by Douglas Elliman Real Estate
$4,185,000
6 beds7.5 baths7,807 sq ft
47 Red Ground Rd, Old Westbury, NY 11568
Listing by Daniel Gale Sothebys Intl Rlty
3D WALKTHROUGH
$7,280,000
6 beds7 baths8,001 sq ft
101 Wheatley Rd, Old Westbury, NY 11568
Listing by Compass Greater NY LLC
See all

Provided by Redfin

Sale history for 75 Post Rd

Year

Property tax

Land + Additions

Assessment*

2023

$719,344 (+0.4%)

$20,107 + $8,507

$28,614

2022

$716,649

$20,107 + $8,507

$28,614

2021

$716,931 (+3.9%)

$20,107 + $8,507

$28,614

2020

$689,902 (−6.8%)

$20,107 + $8,507

$28,614

2019

$739,891 (+6.8%)

$19,324 + $9,821

$29,145

2018

$692,782 (+2.5%)

$22,891 + $20,957

$43,848

2017

$675,912 (+2.7%)

$22,891 + $20,957

$43,848

2016

$658,275 (+8.2%)

$22,891 + $20,957

$43,848

2015

$608,524 (+5.4%)

$22,891 + $20,957

$43,848

2014

$577,241 (+5.2%)

$22,891 + $20,957

$43,848

2013

$548,940 (+18.7%)

$22,891 + $20,957

$43,848

2012

$462,559 (+12.8%)

$22,891 + $38,102

$60,993

2011

$410,076 (+17.8%)

$16,456 + $27,392

$43,848

2010

$348,195 (−13.1%)

$24,799 + $20,165

$44,964

2009

$400,689

$24,799 + $22,219

$47,018

Tax history for 75 Post Rd

Year

Property tax

Land + Additions

Assessment*

2023

$719,344 (+0.4%)

$20,107 + $8,507

$28,614

2022

$716,649

$20,107 + $8,507

$28,614

2021

$716,931 (+3.9%)

$20,107 + $8,507

$28,614

2020

$689,902 (−6.8%)

$20,107 + $8,507

$28,614

2019

$739,891 (+6.8%)

$19,324 + $9,821

$29,145

2018

$692,782 (+2.5%)

$22,891 + $20,957

$43,848

2017

$675,912 (+2.7%)

$22,891 + $20,957

$43,848

2016

$658,275 (+8.2%)

$22,891 + $20,957

$43,848

2015

$608,524 (+5.4%)

$22,891 + $20,957

$43,848

2014

$577,241 (+5.2%)

$22,891 + $20,957

$43,848

2013

$548,940 (+18.7%)

$22,891 + $20,957

$43,848

2012

$462,559 (+12.8%)

$22,891 + $38,102

$60,993

2011

$410,076 (+17.8%)

$16,456 + $27,392

$43,848

2010

$348,195 (−13.1%)

$24,799 + $20,165

$44,964

2009

$400,689

$24,799 + $22,219

$47,018

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Beds

—

Baths

13.5

Stories

Lot width

—

Lot depth

—

Lot size

99.47 Acres

Year renovated

—

Sq. Ft.

19,025

Year built

1935

Style

Single Family Residential

County

Nassau County

APN

10 D 00030

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on May 16, 2025.

Property details

Parking

Parking Information
Parking Features: Attached, Private

Interior

Virtual Tour Information

Fireplace Information
Has Fireplace
Fireplaces Total: 9

Heating & Cooling
Cooling: Central Air
Heating: Forced Air, Hot Water, Oil

Interior Features
Interior Features: Cathedral Ceiling(s),Eat-in Kitchen,Elevator,Entrance Foyer,Formal Dining,First Floor Bedroom,Primary Bathroom,Pantry,Walk-In Closet(s)
Appliances: Oil Water Heater
Flooring: Hardwood
Patio And Porch Features: Patio

Room Information
Room Description: Grand Foyer | Formal Living Room,Fireplace | Formal Dining Room, Fireplace Paneled Library, Fireplace, Sunroom, Fireplace, Sunroom, Fireplace | Breakfast Room | Butler's Pantry | Kitchen | Den | Two Bedrooms Bath | Two Powder Rooms | Laundry Room||Two Primary En-suites, Fireplaces | Six Bedrooms Ensuite | 5 Bedrooms | Bathrooms||Utilities | Storage
Basement YN: No
Attic: Finished,Partially Finished
Rooms Total: 26
Basement: Full, Partially Finished
Additional Rooms: Home Office,Library/Den

Bathroom Information
Bathrooms Full: 10
Bathrooms Half: 2

Exterior

Exterior Features
Exterior Features: Balcony, Private Entrance
Construction Materials: Brick, Frame
Fencing: Fenced
Other Structures: Barn(s), Greenhouse, Outbuilding, Stable(s)
Security Features: Security System

Pool Information
Has Private Pool
Pool Features: In Ground

Lot Information
Lot Features: Level, Near Shops, Part Wooded, Stone/Brick Wall, Split Possible

Property Information
Property Sub Type: Single Family Residence

Financial

Tax Information
Tax Section: 10
Tax Annual Amount: $835,543

Financial Information
Buyer Financing: Other

Utilities

Utility Information
Sewer: Cesspool
Utilities: Trash Collection Private

Location

HOA Information
Association Amenities: Elevator(s)

School Information
Middle Or Junior School: Westbury Middle School
High School: Westbury High School
High School District: Westbury

Location Information
Village: Old Westbury
Directions: Store Hill Road, To Post Road, Enter at #75
County Or Parish: Nassau County

Community Information
Community Features: Tennis Court(s)

Public facts

Beds: —
Baths: 13.5
Sq. Ft.: 19,025
Stories: 2.0
Lot Size: 99.47 acres
Style: Single Family Residential
Year Built: 1935
Year Renovated: —
County: Nassau County
APN: 10 D 00030

Home facts updated by county records on May 16, 2025

Around this home

Schools

Powells Lane School

Public 1-5 • Assigned • 1.1mi

4/10

Westbury Middle School

Public 6-8 • Assigned • 1.2mi

3/10

Westbury High School

Public 9-12 • Assigned • 0.8mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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 98° expected this year, 16 days in 30 years

6/10 Wind Factor

59% 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

Old Westbury, NY • 11568

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 8.7 hours in June and 4.4 hours in December, placing it below the U.S. average for solar exposure.

8.7 hrs

4.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$7.87M – $9.53M

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New listings for sale in 11568

$4,650,000

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Listing by Douglas Elliman Real Estate

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3D WALKTHROUGH

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Listing by Compass Greater NY LLC

Home values near 75 Post Rd

Data from public records.

Address	Redfin Estimate
151 Post Rd, Old Westbury, NY 7 Beds \| 10.5 Baths \| 13347 Sq. Ft.	$17,163,583
72 Post Rd, Old Westbury, NY 9 Beds \| 5.5 Baths \| - Sq. Ft.	$4,413,361

Address	Redfin Estimate
109 Post Rd, Old Westbury, NY - Beds \| 5 Baths \| 7528 Sq. Ft.	$3,401,151
72 Post Rd, Old Westbury, NY - Beds \| 1 Baths \| 3318 Sq. Ft.	$1,826,358

Address	Redfin Estimate
96 Post Rd, Old Westbury, NY - Beds \| 3.5 Baths \| 3341 Sq. Ft.	$1,638,416
72 Post Rd, Old Westbury, NY - Beds \| 1 Baths \| 2554 Sq. Ft.	—

Property information provided by OneKey® MLS as Distributed by MLS Grid when last listed in 2024. This data may not match . Learn more.

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