FOR SALE

0.42 ACRES

12 Old Post Rd
Cos Cob, CT 06807

Cos Cob

5 Beds
2.5 Baths
3,340 sqft (on 0.42 acres)

$2,075,000

$2,350,000

Est. Mortgage $13,186/mo*

Get Pre-Qualified

$2,075,000

$2,350,000

Est. Mortgage $13,186/mo*

Get Pre-Qualified

5 Beds

2.5 Baths

3,340 sqft

(on 0.42 acres)

Local Information

-- mins to

Commute Destination

Description

A special opportunity to own this charming oasis close to town. Tucked behind iron gates awaits an enclave with pool, mature trees and ivy. The main floor has a spacious living room that leads to a heated sunroom, a formal dining room and a kitchen with a commercial cooktop and vent system. The second floor has a primary bedroom with a marble bath and shower and en-suite sitting room/closet. 2 other bedrooms with a sunroom and library. The top floor has another bedroom and an office space. There is a salt-water in-ground pool with a spa and stone patio. The back staircase leads to the primary bedroom sitting area. The fireplace in the kitchen is now used as wine rack. FAR allows up to5,750 sqft.

Home Highlights

Parking

Garage

Outdoor

Pool

A/C

Heating & Cooling

HOA

None

Price/Sqft

$621

Listed

38 days ago

Home Details for 12 Old Post Rd

Interior Features
Interior Details Basement: Full
Beds & Baths Number of Bedrooms: 5Number of Bathrooms: 3Number of Bathrooms (full): 2Number of Bathrooms (half): 1
Dimensions and Layout Living Area: 3340 Square Feet
Appliances & Utilities Utilities: Natural Gas Available
Heating & Cooling Heating: Natural Gas,Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Natural Gas
Fireplace & Spa Number of Fireplaces: 2Spa: HeatedHas a FireplaceHas a Spa
Security Security: Security System

Exterior Features
Exterior Home Features Roof: AsphaltPatio / Porch: TerraceOther Structures: Shed(s)Has a Private Pool
Parking & Garage Number of Garage Spaces: 1Number of Covered Spaces: 1Has a GarageParking Spaces: 1Parking: Garage Door Opener
Pool Pool

Days on Market
Days on Market: 38

Property Information
Year Built Year Built: 1922Year Renovated: 2016
Property Type / Style Property Type: ResidentialProperty Subtype: Residential, Single Family ResidenceArchitecture: Tudor
Building Construction Materials: Brick, Stucco
Property Information Included in Sale: Washer/Dryer, All Kitchen ApplncsParcel Number: 081596/S

Price & Status
Price List Price: $2,075,000Price Per Sqft: $621

Active Status
MLS Status: Active

Location
Direction & Address City: Cos Cob
School Information Elementary School: Cos CobJr High / Middle School: Central

Agent Information
Listing Agent Listing ID: 124934

Building
Building Area Building Area: 3340 Square Feet

Lot Information
Lot Area: 0.42 acres

Mobile R/V
Mobile Home Park Mobile Home Units: Feet

Miscellaneous
BasementMls Number: 124934

Last check for updates: about 9 hours ago

Listing courtesy of Mie Glenn, (203) 249-1121

BHHS New England Properties

Source: Greenwich MLS, Inc., MLS#124934

Also Listed on Greenwich MLS, Inc., Berkshire Hathaway HomeServices New England Properties.

Market trends in Greenwich

Last updated May 2026

Avg. sale price

$1.76M

$257KMoM

Sale-to-List Price

101.2%

1.0%MoM

Price per sq ft

$779

$4MoM

Available listings

183

8MoM

Price History for 12 Old Post Rd

Date	Price	Event	Source
06/11/2026	$11,000	Listed For Rent	Berkshire Hathaway HomeServices New England Properties

06/10/2026	$2,075,000	PriceChange	Greenwich MLS, Inc. #124934
Price Change $275,000 (-12%)
05/07/2026	$2,350,000	Listed For Sale	Greenwich MLS, Inc. #124934

06/01/2022	$9,350	Sold	BHHS NE Properties sold #170493473_06807
Recording Date 06/01/2022 County Transfer Tax N/A Total Transfer Tax N/A
11/14/2016	$6,900	Sold	N/A
Recording Date 11/14/2016 County Transfer Tax N/A Total Transfer Tax N/A
08/19/2016	$1,550,000	Listed For Sale	Agent Provided

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Comparable Sales for 12 Old Post Rd

Address	Distance	Property Type	Sold Price	Sold Date	Bed	Bath	Sqft
7 Stanwich Rd, Greenwich, CT	0.05	Single-Family Home	$4,100,000	01/21/26	5	3.5	4,000
11 Valleywood Rd, Cos Cob, CT	0.08	Single-Family Home	$2,745,000	11/20/25	5	4.5	3,934
52 Valleywood Rd, Cos Cob, CT	0.27	Single-Family Home	$1,855,000	05/15/26	4	3	1,944
37 Maplewood Drive, Cos Cob, CT	0.42	Single-Family Home	$1,100,000	06/30/25	4	4	3,232
15 Ridge Rd, Cos Cob, CT	0.25	Single-Family Home	$1,420,000	10/24/25	4	2	2,073
44 Bote Rd, Greenwich, CT	0.42	Single-Family Home	$2,605,000	09/08/25	4	4.5	2,916

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Additional Cost

Assigned Schools

These are the assigned schools for 12 Old Post Rd.

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The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Cos Cob

14 Homes For You
Buy: $70k - $4.85m

See Local Highlights

Neighborhood stats provided by third party data sources.

LGBTQ Local Legal Protections

Mie Glenn, BHHS New England Properties

Agent Phone: (203) 249-1121

Listing data courtesy of Greenwich MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.

12 Old Post Rd, Cos Cob, CT 06807 is a 5 bedroom, 3 bathroom, 3,340 sqft single-family home built in 1922. 12 Old Post Rd is located in Cos Cob, Cos Cob. This property is currently available for sale and was listed by Greenwich MLS, Inc. on May 7, 2026. The MLS # for this home is MLS# 124934.

12 Old Post Rd
Cos Cob, CT 06807

$2,075,000

$2,075,000

Local Information