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11 Langhorne Lane

Greenwich, CT 06831

8 beds
17 baths
26,454 sqft
~9 acre lot
$737 per sqft
2005 build
– on site

Famed architect Boris Baranovich designed this extraordinary stone Georgian estate of 26,000+/- square feet on 8.788 secluded acres off of Round Hill Road. Exquisitely executed, this stately manor home offers eight bedrooms and twelve full and five half bathrooms throughout four levels of living space. Mature trees and lush lawn surround this exceptional estate with two gated entrances: one to the formal parking court and one for service/deliveries. Beautifully appointed interiors feature eight wood-burning fireplaces in the elegant foyer, living and dining rooms, family room, sunroom, library, and primary suite. There are six upper-level bedrooms in addition to the primary suite, plus a private guest apartment. The third floor is comprised of staff quarters, a playroom and storage. Designed for entertaining, the lower level features a regulation squash court, a billiard/game room, professional 12-seat home theater, gym, climate-controlled wine cellar, kitchenette, full spa bathroom and dramatic indoor pool and Japanese soaking tub. There are two attached garages adjacent to the mudroom. Connected by a breezeway is a detached garage with two additional bays and two car lifts. Bonus office with separate private entrance and private power room. A guest apartment with private entrance offers an en-suite bedroom, kitchenette and sitting room. Overlooking the gorgeous backyard, French doors open to the rear stone terraces. Perfect for indoor/outdoor entertaining is a pergola-covered outdoor dining area with built-in grill and firepit. The sunroom and "pool cabana" rooms open to the spectacular outdoor pool with automatic cover. A extraordinary opportunity to buy an irreplaceable Greenwich estate offering luxurious, resort-style living in the heart of back country.

Listing courtesy of GMLS / Sotheby's International Realty

Last checked: Checking… • Last updated May 30, 2025 •

MLS# 122878 —

The Building

Year Built:

2005
Year Built Effective:

2012
New Construction:

No
Construction Materials:

Stone
Architectural Style:

Georgian Colonial
Direction Faces:

None
Roof:

Slate
Basement:

Finished, Full
Exterior Features:

Balcony
Patio And Porch Features:

Terrace
Accessibility Features:

None
Security Features:

Security System
Building Area Total:

26454.0
Building Area Source:

Architect

Interior

Furnished:

None
Interior Features:

Sep Shower, Kitchen Island, Back Stairs, Bookcases
Flooring:

None
Fireplace:

true
Fireplaces Total:

8
Laundry Features:

Laundry Room

Room Dimensions

Living Area:

None

Location

Latitude:

41.097232
Longitude:

-73.676457

The Property

Parcel Number:

10-3192
Property Type:

Residential
Property Subtype:

Single Family Residence
Lot Features:

Cul-de-Sac, Level
Property Attached:

No
Lot Size Acres:

8.79
Lot Size SqFt:

382892.4
Lot Size Units:

Acres
Lot Size Area:

8.79
Zoning:

RA-4
Current Use:

None
Possible Use:

None
View:

None
Topography:

None
Waterfront:

No
Other Equipment:

Generator

Listing Agent

Contact info:

Taxes

Tax Annual Amount:

122658.0
Tax Assessed Value:

10474660

Beds

Bedrooms Total:

8
Main Level Bedrooms:

None

Baths

Total Baths:

14.5
Total Baths:

17
Full Baths:

12
Half Baths:

5
Partial Baths:

None
Three Quarter Baths:

None
Quarter Baths:

None
Main Level Baths:

None

The Listing

Virtual Tour URL Unbranded:

https://player.vimeo.com/video/1087849243?h=b860cc75de&badge=0&autopause=0&player_id=0&app_id=58479
Virtual Tour URL Branded:

None

Heating & Cooling

Heating:

Forced Air, Oil
Heating:

true
Cooling:

Central A/C
Cooling:

true

Utilities

Utilities:

Propane
Electric:

None
Sewer:

Septic Tank
Water Source:

Well

Appliances

Appliances:

None

Schools

Elementary School:

Parkway
Middle Or Junior School:

Western
Middle Or Junior School District:

None
High School:

None

The Community

Subdivision Name:

None
Senior Community:

None
Pool Private:

true
Spa Features:

None
Association:

No

Parking

Garage:

true
Garage Spaces:

6.0
Carport Spaces:

None
Parking Total:

None
Parking Features:

Electric Gate

Monthly cost estimate

Asking price

$19,500,000

Expense	Monthly cost
Mortgage	$104,416
Taxes	$10,221
Insurance	$5,362
Utilities	$993 See report
Total	$120,992/mo.^*
	^*This is an estimate

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Sale history

Date	Event	Source	Price	% Change
5/28/25 May 28, 2025	Listed / Active	GMLS	$19,500,000	14.7% (1.3% / YR)
4/16/14 Apr 16, 2014		GMLS	$17,000,000

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This house located in Greenwich, CT 06831 is currently for sale for $19,500,000. 11 Langhorne Lane is a 26,454 square foot house with 8 beds and 17 baths that has been on Estately for 2 days. This house is in the attendance area of Greenwich High School, Parkway School, and Western Middle School.

Listing Courtesy of: GMLS and Sotheby's International Realty.

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