12 Old Post Rd, Cos Cob, CT 06807
Property image
Property image
SOLD
AUG 6, 2026

$2,031,900

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

12 Old Post Rd, Cos Cob, CT 06807

Cos Cob
Est. Refi. Payment $13,806/mo*
Refinance Your Home
Currently Off Market - Sold Aug 6, 2026 for $2,025,000 (2% below list price)

Home Value

Trulia Estimate
$2.03M
Since last month
Increased$3K (+0.1%)
Since last year
Increased$282K (+16%)
Since last sale
Increased$11K (+0.6%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +36% in the last 10 years
MonthEstimated value
2026
September 2026$2.04M
August 2026$2.03M
July 2026$2.01M
June 2026$2M
May 2026$2.39M
April 2026$2.04M
March 2026$1.91M
February 2026$2M
January 2026$1.84M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
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
50 Valleywood Rd, Cos Cob, CT
0.26
Single-Family Home
$1,150,000
07/07/26
4
2
1,954
50 Valleywood Road, Greenwich, CT
0.27
Single-Family Home
$1,150,000
07/07/26
4
2
1,954
76 Sinawoy Rd, Cos Cob, CT
0.51
Single-Family Home
$2,250,000
11/14/25
4
2.5
2,423
15 Ridge Rd, Cos Cob, CT
0.25
Single-Family Home
$1,420,000
10/24/25
4
2
2,073

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
1525 East Putnam Avenue #308, Greenwich, CT 06830
0.03
$621,600
2
1
905
Off Market
529 E Putnam Ave, Greenwich, CT 06830
0.07
$2,627,800
3
1.5
1,540
Off Market
7 Stanwich Rd, Greenwich, CT 06830
0.05
$4,100,000
5
3.5
4,000
Recently Sold
11 Valleywood Rd, Cos Cob, CT 06807
0.08
$2,935,700
5
4.5
3,934
Off Market
12 Salem St, Cos Cob, CT 06807
0.11
$2,193,300
4
4
2,298
Off Market
14 Salem Street, Greenwich, CT 06830
0.12
$2,616,800
4
3
2,693
Off Market
14 Salem St, Cos Cob, CT 06807
0.13
$2,135,900
4
3
2,693
Off Market
20 Valleywood Rd, Cos Cob, CT 06807
0.11
$1,639,600
3
2.5
1,476
Off Market
13 Field Rd, Cos Cob, CT 06807
0.12
$1,450,000
2
2
1,662
Recently Sold
26 Valleywood Rd, Cos Cob, CT 06807
0.13
-
4
2
2,439
Off Market
17 Field Rd, Cos Cob, CT 06807
0.13
$1,510,000
2
1
1,402
Off Market

Local Information

  • Map ViewExplore the area around 12 Old Post Rd.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 1922
0.42 acre lot
3,340 sqft
$606/sqft
Garage

About this House

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.
12 Old Post Rd, Cos Cob, CT 06807 is a 5 bedroom, 3 bathroom, 3,340 sqft single-family home in Cos Cob, built in 1922. It last sold for $2,025,000 on Aug 6, 2026 (2% below the $2,075,000 asking price). More recently, it was listed as a rental in June 2026 with an asking price of $11,000 per month. That rental listing was removed on July 2, 2026. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,031,900, with a rent estimate of $8,699/month.
Last check for updates: about 7 hours ago
Listed by Mie Glenn, (203) 249-1121
BHHS New England Properties
Bought with: Barbara Daly, (203) 912-8504, Sotheby's International Realty
Source: Greenwich MLS, Inc., MLS#124934

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

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: $606/sqft
Status Change & Dates
Off Market Date: Thu Jul 02 2026

Active Status

MLS Status: Closed

Location

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

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

Price and Tax history

DateEventPrice
Aug 6, 2026
Source: Greenwich MLS, Inc. #124934
Sold
$2,025,000
Jul 2, 2026
Source: Berkshire Hathaway HomeServices New England Properties
ListingRemoved
$11,000
Jul 2, 2026
Source: Berkshire Hathaway HomeServices New England Properties #124934
Contingent
$2,075,000
Jul 2, 2026
Source: Greenwich MLS, Inc. #124934
Pending
$2,075,000
Jun 11, 2026
Source: Berkshire Hathaway HomeServices New England Properties
Listed For Rent
$11,000

Market trends in Greenwich

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$2.58M
$150KMoM
Sale-to-List Price
104.8%
1.0%MoM
Price per sq ft
$825
$1MoM
Available listings
152
30MoM

Around this home

Neighborhood Overview

Cos Cob
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Cos Cob

At least 1 Trulia users voted on each feature.

  • 100 % Say neighbors are friendly

  • 100 % Say there are community events

  • 100 % Say there's holiday spirit

  • 100 % Say it's walkable to grocery stores

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 100 % Say car is needed

  • 100 % Say streets are well-lit

  • 100 % Say it's dog friendly

Sourced by Trulia users. Learn more about our methodology.

LGBTQ Local Legal Protections

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.

Frequently asked questions about 12 Old Post Rd

  • What is 12 Old Post Rd estimated to be worth?
    Trulia's estimated value for 12 Old Post Rd in Cos Cob, CT is $2,031,900.
  • What is the price history for 12 Old Post Rd?
    12 Old Post Rd in Cos Cob, CT last sold for $2,025,000 in August 2026.
  • Is Cos Cob a buyer's or seller's market?
    Cos Cob is currently a seller's market, based on recent for-sale activity.
  • What's the median sale price in Cos Cob?
    The median sale price in Cos Cob is $2.58M. That is up $150K from the prior month.
  • Does 12 Old Post Rd have air conditioning?
    Yes, 12 Old Post Rd in Cos Cob, CT has air conditioning.
  • Does 12 Old Post Rd have a pool?
    Yes, 12 Old Post Rd in Cos Cob, CT has a pool.

Explore by feature - Pet Friendly

33 pet-friendly rentals in Cos Cob, CT

Explore by feature - Garage

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Explore by feature - Air Conditioning

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Explore by feature - Pool

19 rentals with a pool in Cos Cob, CT

Explore by feature - Washer/dryer

94 rentals with a washer/dryer in Cos Cob, CT

Explore by feature - Outdoor Space

20 rentals with an outdoor space in Cos Cob, CT

Apartments for Rent

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