OFF MARKET

Off Market May 2022 for $4.2M

$5,899,503

•

8,200

sq ft

649 River Rd, Cos Cob, CT 06807

About this home

See what luxury has to offer in this beautiful custom home built in 2017, which looks & feels brand new. One of three homes built on a private cul-de-sac, minutes from highly rated schools, trains & shops, this home has all the amenities that today's buyer desires, built to perfection. Features include main bedroom suite w/ large custom designed walk-in closet and 5 additional en-suite bedrooms. The first floor has an open concept floor plan with large gourmet kitchen family room with FP, 8 foot doors that lead out to blue stone patio and sprawling back yard w/ room for pool or tennis (town approval required). Other features include walk-in pantry, butler's pantry, mudroom w/ built-ins, 3 car garage, generator, finished lower level w/ home theatre & gym, professionally landscaped grounds.

Single-familyProperty Type

2017Year Built

1.5 acresLot Size

$719Est. Price/Sq.Ft.

3 car garageParking

Listed by Stefanie Lacoff • BHHS New England Properties

Bought with Charles Vinci • Compass Connecticut, LLC

Redfin checked: a minute ago

•Source:GMLS #114907

Redfin Estimate

$5,899,503

$1.7M since sold in May 2022$229K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 81% higher than the average sale price ($3.26M) of 6 comparable homes.

SOLD OCT 27, 2025
$3,800,000
A
5 beds6.5 baths6,017 sq ft
17 Rustic View Rd, Greenwich, CT 06830
SOLD AUG 7, 2026
$1,875,000
B
4 beds4.5 baths4,391 sq ft
37 W Rock Trl, Stamford, CT 06902
SOLD JUL 16, 2026
$4,000,000
C
5 beds4.5 baths4,916 sq ft
27 Cognewaugh Rd, Cos Cob, CT 06807
SOLD JUL 16, 2026
$1,550,000
D
6 beds5.5 baths4,794 sq ft
163 W Hill Rd, Stamford, CT 06902
SOLD JUL 16, 2026
$4,802,500
E
5 beds6.5 baths5,426 sq ft
20 Old Wagon Rd, Old Greenwich, CT 06870
SOLD JUN 29, 2026
$3,525,000
F
5 beds3.5 baths5,213 sq ft
12 Ricki Beth Ln, Old Greenwich, CT 06870

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Earn from this home

Sell

$2,472,787

Est. take-home

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Rent

$4,593/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

8 MoM

New listings for sale

OPEN SUN, 1PM TO 3PM
$1,379,000
2 beds2.5 baths1,732 sq ft
115 River Rd #5, Cos Cob, CT 06807
$869,500
2 beds3 baths1,428 sq ft
49 Harold St #2, Cos Cob, CT 06807
$869,500
2 beds3 baths1,428 sq ft
49 Harold St #1, Cos Cob, CT 06807
$1,800,000
3 beds2.5 baths2,550 sq ft
55 Cos Cob Ave, Cos Cob, CT 06807
$1,699,000
4 beds3.5 baths3,120 sq ft
24 Harold St Unit B, Cos Cob, CT 06807
$1,739,000
4 beds6 baths2,856 sq ft
49 Harold St, Cos Cob, CT 06807
See all

Provided by Redfin

Sale history for 649 River Rd

Date

Event

Price

GMLS #114907

May 4, 2022

Sold

$4,200,000

$512/sq ft

Mar 12, 2022

Pending

—

Feb 4, 2022

Relisted

—

Jan 15, 2022

Delisted

—

Jan 14, 2022

Listed

$4,200,000

$512/sq ft

Smart MLS #99182489

Mar 15, 2018

Sold

$3,550,000

$433/sq ft

Jul 13, 2017

Listing Removed

—

Apr 21, 2017

Listed

$3,590,000

$438/sq ft

Taking Luxury Building in Greenwich to a Whole New Level Second of three homes to be built on a private cul-de-sac, minutes from schools, trains and shops, this custom built home has all the amenities that today’s buyer is looking for, built to perfection. Features include master suite with custom designed walk-in closet and 5 additional bedrooms. The first floor has an open concept floor plan with large gourmet kitchen family room with fireplace, 8 foot doors that lead out to blue stone patio are sprawling back yard, wide plank oak floors throughout. Other features include walk in pantry, mudroom, three car garage, generator, fully finished lower level, professionally landscaped

GMLS #98560

Feb 2, 2018

Sold

$3,550,000

$433/sq ft

Jan 17, 2017

Listed

$3,590,000

$438/sq ft

+23

Taking Luxury Building in Greenwich to a Whole New Level Second of three homes to be built on a private cul-de-sac, minutes from schools, trains and shops, this custom built home has all the amenities that today’s buyer is looking for, built to perfection. Features include master suite with custom designed walk-in closet and 5 additional bedrooms. The first floor has an open concept floor plan with large gourmet kitchen family room with FP, 8 foot doors that lead out to blue stone patio are sprawling back yard. Other features include walk in pantry, mudroom, three car garage, generator, fully finished lower level, professionally landscaped grounds and much more.

GMLS #95062

Jun 8, 2017

Delisted

—

Nov 10, 2015

Listed

$3,700,000

$451/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$30,699 (+3.3%)

$861,140 + $1,777,160

$2,638,300

2022

$29,730 (−3.5%)

$861,140 + $1,717,310

$2,578,450

2021

$30,803 (+0.2%)

$738,150 + $1,820,210

$2,558,360

2020

$30,751 (−1.0%)

$738,150 + $1,820,210

$2,558,360

2019

$31,058 (+2.3%)

$738,150 + $1,820,210

$2,558,360

2018

$30,368 (+22.8%)

$738,150 + $1,820,210

$2,558,360

2017

$24,734 (+196.4%)

$738,150 + $1,319,780

$2,057,930

2016

$8,344

$705,390

Tax history for 649 River Rd

Year

Property tax

Land + Additions

Assessment*

2023

$30,699 (+3.3%)

$861,140 + $1,777,160

$2,638,300

2022

$29,730 (−3.5%)

$861,140 + $1,717,310

$2,578,450

2021

$30,803 (+0.2%)

$738,150 + $1,820,210

$2,558,360

2020

$30,751 (−1.0%)

$738,150 + $1,820,210

$2,558,360

2019

$31,058 (+2.3%)

$738,150 + $1,820,210

$2,558,360

2018

$30,368 (+22.8%)

$738,150 + $1,820,210

$2,558,360

2017

$24,734 (+196.4%)

$738,150 + $1,319,780

$2,057,930

2016

$8,344

$705,390

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

1.6 Acres

Year renovated

—

Sq. Ft.

6,592

Year built

2017

Style

Single Family Residential

County

Fairfield County

APN

2613870

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2023.

Property details

Parking

Parking and Garage Information
Has Garage
# of Garage Spaces: 3

Interior

Bathroom Information
# of Full Bathrooms: 5
# of Half Bathrooms: 2
Bathrooms Total Integer: 7
Bathrooms Total Decimal: 6

Heating & Cooling
Has Cooling
Cooling: Central A/C
Has Heating
Heating: Forced Air, Hydro-Air, Radiant, Oil

Interior Features
Interior Features: Back Stairs, Built-in Features
Has Fireplace(s)
# of Fireplaces Total: 3
Basement: Finished, Full

Exterior

Exterior Features
Exterior Features: Balcony
Patio And Porch Features: Terrace

Property Information
Property Sub-Type: Single Family Residence
Year Built: 2017
Roof: Composition, Slate
Construction Materials: Shingle Siding, Clapboard
Security Features: Security System
Other Equipment: Generator
Building Area Total: 8200.0
Building Area Source: Taxcard

Lot Information
Lot Features: Cul-de-Sac, Level
Lot Size Area: 1.5
Lot Size Units: Acres
Lot Size Square Feet: 65340.0
Lot Size Acres: 1.5
Zoning: RA-1

Financial

Tax Information
Tax Annual Amount: $30,803

Utilities

Utilities Information
Utilities: Propane
Sewer: Public Sewer
Water Source: Well

Location

School Information
Elementary School: North Mianus
Middle Or Junior School: Eastern

Public facts

Beds: 5
Baths: 6.0
Sq. Ft.: 6,592
Stories: 2.0
Lot Size: 1.6 acres
Style: Single Family Residential
Year Built: 2017
Year Renovated: —
County: Fairfield County
APN: 2613870

Home facts updated by county records on Jul 13, 2023

Around this home

Schools

North Mianus School

Public K-5 • Assigned • 0.7mi

9/10

Eastern Middle School

Public 6-8 • Assigned • 2.3mi

10/10

Greenwich High School

Public 9-12 • Assigned • 2.5mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

5/10 Heat Factor

7 days above 99° expected this year, 15 days in 30 years

6/10 Wind Factor

67% chance of strong winds in next 30 years

4/10 Air Factor

5 unhealthy days expected this year, 7 days in 30 years

Provided by First Street

Historical weather

Cos Cob, CT • 06807

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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.

8.7 hrs

4.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$5.61M – $6.79M

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New listings for sale in 06807

OPEN SUN, 1PM TO 3PM

$1,379,000

2 beds2.5 baths1,732 sq ft

115 River Rd #5, Cos Cob, CT 06807

$869,500

2 beds3 baths1,428 sq ft

49 Harold St #2, Cos Cob, CT 06807

$869,500

2 beds3 baths1,428 sq ft

49 Harold St #1, Cos Cob, CT 06807

$1,800,000

3 beds2.5 baths2,550 sq ft

55 Cos Cob Ave, Cos Cob, CT 06807

$1,699,000

4 beds3.5 baths3,120 sq ft

24 Harold St Unit B, Cos Cob, CT 06807

$1,739,000

4 beds6 baths2,856 sq ft

49 Harold St, Cos Cob, CT 06807

Home values near 649 River Rd

Data from public records.

Address	Redfin Estimate
687 River Rd, Cos Cob, CT 4 Beds \| 4 Baths \| 3025 Sq. Ft.	$2,791,498
664 River Rd, Cos Cob, CT 3 Beds \| 2.5 Baths \| 3312 Sq. Ft.	$2,535,364

Address	Redfin Estimate
681 River Rd, Cos Cob, CT 4 Beds \| 4.5 Baths \| 3826 Sq. Ft.	$2,724,906
659 River Rd, Cos Cob, CT 5 Beds \| 5.5 Baths \| 5485 Sq. Ft.	$4,132,209

Address	Redfin Estimate
656 River Rd, Cos Cob, CT 3 Beds \| 2 Baths \| 1921 Sq. Ft.	$1,795,277
682 River Rd, Cos Cob, CT 5 Beds \| 2.5 Baths \| 3437 Sq. Ft.	$3,005,538

Property information provided by GMLS when last listed in 2022. This data may not match . Learn more.

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