4 River Ln, Cos Cob, CT 06807
OFF MARKET

4 River Ln
Cos Cob, CT 06807

Cos Cob
  • 4 Beds
  • 3.5 Baths
  • 2,840 sqft

$1,996,300

Trulia Estimate
as of Jul 5, 2026
Est. Refi. Payment $12,949/mo*
Refinance Your Home

$1,996,300

Trulia Estimate
as of Jul 5, 2026
Est. Refi. Payment $12,949/mo*
Refinance Your Home
4 Beds
3.5 Baths
2,840 sqft

Local Information

  • Map ViewExplore the area around 4 River Ln.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Description

This single-family home is located at 4 River Ln, Cos Cob, CT. 4 River Ln is in the Cos Cob neighborhood in Cos Cob, CT and in ZIP code 06807. This property has 4 bedrooms, 4 bathrooms and approximately 2,840 sqft of floor space. This property has a lot size of 7405 sqft and was built in 1946.
4 River Ln, Cos Cob, CT 06807 is a 4 bedroom, 4 bathroom, 2,840 sqft single-family home in Cos Cob, built in 1946. It last sold for $415,000 on Mar 2, 1999. It is currently off market. The Trulia Estimate is $1,996,300, with a rent estimate of $7,724/month.

Home Highlights

Parking
Garage
Outdoor
Patio
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago

Home Details for 4 River Ln

Interior Features

Interior Details
BasementAtticNumber of Rooms: 10Types of Rooms: Walk In Closet, Breakfast Nook, Dining Room, Family Room, Laundry Room, Master Bath, Pantry, Recreation RoomWet Bar
Heating & Cooling
Heating: Forced Air, Radiant, GasAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2Floors: Hardwood
Appliances & Utilities
Cable ReadyDishwasherDisposalDryerMicrowaveRefrigeratorWasher
Fireplace & Spa
Fireplace
Windows, Doors, Floors & Walls
Double Paned Windows
Security
Security System

Exterior Features

Exterior Home Features
Roof: Shake ShingleExterior: Shingle, WoodFoundation Type: Crawl RaisedLawnPatioSprinkler System
Parking & Garage
GarageParking: Garage Attached, Off Street

Property Information

Year Built
Year Built: 1946Year Updated: 2005
Property Type / Style
Property Type: Single Family HomeArchitecture: Colonial

Community

Units in Building: 1

Lot Information

Lot Area: 7405 sqft

Price History for 4 River Ln

DatePriceEventSource
03/02/1999$415,000Sold
N/A

Market trends in Greenwich

Last updated May 2026
Buyer'sMarketSeller'sMarket
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
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Property Tax and Assessment

Year2025
Tax$9,260
Assessment$749,280
Home facts updated by county records

Comparable Sales for 4 River Ln

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
2 River Ln, Cos Cob, CT
0.02
Single-Family Home
$1,200,000
07/10/25
3
2
1,613
4 Miami Ct, Cos Cob, CT
0.14
Single-Family Home
$1,885,000
03/20/26
4
3
1,785
24 Valley Rd, Cos Cob, CT
0.20
Single-Family Home
$2,400,000
02/25/26
4
4.5
3,221
42 Mead Ave, Greenwich, CT
0.15
Single-Family Home
$1,125,000
11/21/25
3
2
1,833
42 Mead Ave, Cos Cob, CT
0.15
Single-Family Home
$1,125,000
11/20/25
3
2
1,833
48 River Rd, Cos Cob, CT
0.11
Single-Family Home
$1,000,000
11/18/25
3
2
1,641
34 1/2 Orchard St, Cos Cob, CT
0.26
Single-Family Home
$2,022,000
06/22/26
4
2.5
2,126
23 Westview Pl, Riverside, CT
0.46
Single-Family Home
$2,250,000
04/03/26
4
3.5
2,641
16 Kent Pl, Cos Cob, CT
0.46
Single-Family Home
$1,690,000
05/15/26
4
2.5
2,410
57 Orchard St, Cos Cob, CT
0.42
Single-Family Home
$1,200,000
07/31/25
3
2.5
1,836

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Assigned Schools

These are the assigned schools for 4 River Ln.
View nearby schools on GreatSchools
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
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

Apartments for Rent

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Explore by feature - Pet Friendly

39 pet-friendly rentals in Cos Cob, CT

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Explore by feature - Pool

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Explore by feature - Outdoor Space

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Homes for sale near 4 River Ln

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Off Market Homes Near 4 River Ln

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