12 River Ln, Cos Cob, CT 06807
Property image
Property image
OFF MARKET

$2,928,600

Trulia Estimate
  • 4 Beds
  • 2.5 Baths
  • 2,653 sqft (on 0.25 acres)

12 River Ln, Cos Cob, CT 06807

Cos Cob
Est. Refi. Payment $19,912/mo*
Refinance Your Home
Currently Off Market - Sold Jan 15, 2025 for $2,225,000

Home Value

Trulia Estimate
$2.93M
Since last month
Increased$123K (+4.4%)
Since last year
Increased$428K (+17.1%)
Since last sale
Increased$704K (+31.6%)
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 +323% in the last 10 years
MonthEstimated value
2026
September 2026$2.93M
August 2026$2.86M
July 2026$2.81M
June 2026$2.87M
May 2026$2.85M
April 2026$2.81M
March 2026$2.81M
February 2026$2.72M
January 2026$2.74M
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
34 1/2 Orchard St, Cos Cob, CT
0.22
Single-Family Home
$2,022,000
06/22/26
4
2.5
2,126
4 Cos Cob Ave, Cos Cob, CT
0.19
Single-Family Home
$1,530,000
08/17/26
4
3
2,720
33 Mead Ave, Cos Cob, CT
0.21
Single-Family Home
$2,700,000
08/26/26
4
4
3,492
4 Miami Ct, Cos Cob, CT
0.13
Single-Family Home
$1,885,000
03/20/26
4
3
1,785
76 Sinawoy Rd, Cos Cob, CT
0.47
Single-Family Home
$2,250,000
11/14/25
4
2.5
2,423
24 Valley Rd, Cos Cob, CT
0.15
Single-Family Home
$2,400,000
02/25/26
4
4.5
3,221
23 Westview Pl, Riverside, CT
0.44
Single-Family Home
$2,250,000
04/03/26
4
3.5
2,641
42 Mead Ave, Cos Cob, CT
0.19
Single-Family Home
$1,125,000
11/20/25
3
2
1,833

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
7 River Rd #C-8, Cos Cob, CT 06807
0.04
$99,000
Studio
-
-
For Sale
7 River Ln, Cos Cob, CT 06807
0.04
$2,045,800
3
2
1,198
Off Market
2 River Ln, Cos Cob, CT 06807
0.07
$1,293,900
3
2
1,613
Off Market
78 River Rd #9, Greenwich, CT 06807
0.05
$1,546,300
3
2.5
2,210
Off Market
24 Robertson Ln, Cos Cob, CT 06807
0.08
$1,699,000
3
3
2,105
Off Market
453 East Putnam Avenue #4B, Greenwich, CT 06830
0.04
$850,000
2
2.5
1,464
Recently Sold
6 Robertson Lane #4, Cos Cob, CT 06807
0.08
$1,223,200
3
2.5
2,094
Off Market
453 E Putnam Ave #1E, Cos Cob, CT 06807
0.05
$1,190,500
2
2.5
1,464
Off Market
453 E Putnam Ave #1M, Cos Cob, CT 06807
0.05
$898,400
2
2.5
1,464
Off Market
453 E Putnam Ave #3I, Cos Cob, CT 06807
0.05
$994,300
2
2.5
1,464
Off Market
6 Robertson Ln #7, Greenwich, CT 06807
0.09
$1,001,700
2
2.5
1,700
Off Market

Local Information

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

Home Highlights

Single-Family Home
Built in 1947
0.25 acre lot
2,653 sqft
$1,104/sqft
Garage

About this House

An ideal location, on a cul-de-sac off River Road near town, train, the waterfront and the Water Club. It features a total of four bedrooms, including a primary suite on the first level with a luxurious bath and an adjacent office or nursery. Upstairs you will find three bedrooms and an updated luxury bath. A previous renovation expanded the gourmet kitchen and added a family room with stone fireplace and French doors leading to a beautiful stone terrace in the very private fenced backyard with stunning professional landscaping and a separate storage shed. The skylights and high ceiling throughout the home ensures an abundance of natural light throughout the day.
12 River Ln, Cos Cob, CT 06807 is a 4 bedroom, 3 bathroom, 2,653 sqft single-family home in Cos Cob, built in 1947. It last sold for $2,225,000 on Jan 15, 2025 (2% above the $2,175,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,928,600.
Last check for updates: about 11 hours ago
Listed by Jackie Hammock, (203) 561-0690
Coldwell Banker Realty
Bought with: Cate Keeney, (203) 536-8187, Sotheby's International Realty
Source: Greenwich MLS, Inc., MLS#121402

Home Details for 12 River Ln

Interior Features

Interior Details
Basement: Partially Finished
Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 3Number of Bathrooms (full): 2Number of Bathrooms (half): 1
Dimensions and Layout
Living Area: 2653 Square Feet
Appliances & Utilities
Utilities: Cable ConnectedLaundry: Laundry Room
Heating & Cooling
Heating: Natural Gas,Forced AirHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Natural Gas
Fireplace & Spa
Number of Fireplaces: 2Has a Fireplace
Security
Security: Security System

Exterior Features

Exterior Home Features
Roof: ShinglePatio / Porch: TerraceOther Structures: Shed(s)No Private Pool
Parking & Garage
Number of Garage Spaces: 1Number of Covered Spaces: 1Has a GarageParking Spaces: 1Parking: Garage

Property Information

Year Built
Year Built: 1947Year Renovated: 2014
Property Type / Style
Property Type: ResidentialProperty Subtype: Residential, Single Family ResidenceArchitecture: Cape Cod
Building
Construction Materials: Shingle Siding
Property Information
Included in Sale: Washer/Dryer, All Kitchen ApplncsParcel Number: 081358/S

Price & Status

Price
List Price: $2,175,000
Status Change & Dates
Off Market Date: Mon Oct 28 2024

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: 2653 Square Feet

Lot Information

Lot Area: 10890 sqft

Mobile R/V

Mobile Home Park
Mobile Home Units: Feet

Miscellaneous

BasementMls Number: 121402

Price and Tax history

DateEventPrice
Jan 15, 2025
Source: Greenwich MLS, Inc. #121402
Sold
$2,225,000
Oct 29, 2024
Source: Greenwich MLS, Inc. #121402
Pending
$2,175,000
Oct 11, 2024
Source: Greenwich MLS, Inc. #121402
PriceChange
$2,175,000
Price decreased by 2%
Sep 11, 2024
Source: Greenwich MLS, Inc. #121402
Listed For Sale
$2,225,000
Jun 25, 2024
Source: Greenwich MLS, Inc. #120785
ListingRemoved

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 River Ln

  • What is 12 River Ln estimated to be worth?
    Trulia's estimated value for 12 River Ln in Cos Cob, CT is $2,928,600.
  • What is the price history for 12 River Ln?
    12 River Ln in Cos Cob, CT last sold for $2,225,000 in January 2025.
  • 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 River Ln have air conditioning?
    Yes, 12 River Ln in Cos Cob, CT has air conditioning.
  • Does 12 River Ln have laundry facilities?
    Yes, 12 River Ln in Cos Cob, CT has laundry facilities.

Explore by feature - Pet Friendly

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Explore by feature - Outdoor Space

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