$2,932,452
$647K since sold in October 2025$61K since July
This home's estimate is 0.9% lower than the average sale price ($2.96M) of 6 comparable homes.
Claim this home to receive a free report every month with insights on the changing estimate.
SOLD OCT 27, 2025
Off Market Oct 2025 for $2.2M
$2,932,452
Est. refi paymentEst. refi $10,104/mo
5
bd•
3.5 ba
•
3,634
sq ft
551 River Rd, Cos Cob, CT 06807
About this home
Single-familyProperty Type
2014Year Built
9,583 sq ftLot Size
$807Est. Price/Sq.Ft.
2 car garageParking
Listed by Maria Arning • BHHS New England Properties
Bought with Agustina Sanchez • Houlihan Lawrence
Redfin checked: 2 minutes ago
•Source:GMLS #121011
Redfin Estimate
Earn from this home
Sell
$961,045
Est. take-home
List your home with Redfin and save $29,325
Refinance
$0
Est. cash available
Get cash now or lower your monthly rate
Rent
$4,401/mo
Redfin rental estimate
List your home for rent
Market trends in 06870, CT
Last updated July 2026
Buyer's Market
Seller's Market
Seller's market
Sale-to-List Price
108.9%
+2.6% MoM
Median sale price
$2.7M
$508K MoM
Avg. days on market
13d
4 days MoM
Recently sold homes
27
8 MoM
New listings for sale
Provided by Redfin
Property details
Around this home
Lifestyle
Provided by Walk Score and Local Logic
Sun exposure
In this area, properties receive around 8.7 hours in June and 4.3 hours in December, placing it below the U.S. average for solar exposure.
JuneDecember
Provided by Shadowmap
Property information provided by OneKey® MLS as Distributed by MLS Grid when last listed in 2025. This data may not match . Learn more.
More real estate resources
- Neighborhoods
- Zip Codes
- Cities
- Minor Civil Divisions
- Popular Searches
| Eastern Greenwich homes for sale |
Find us
Subsidiaries
Affiliated Business
United States
CanadaCopyright: © 2026 Redfin. All rights reserved.
Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.
Do not sell or share my personal information.
REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.
California DRE #01521930
Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures
New Mexico Real Estate Licenses
TREC: Info About Brokerage Services, Consumer Protection Notice
All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.
Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.
If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.
REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.
GreatSchools Ratings provided by GreatSchools.org.