OFF MARKET

Off market oct 2010 for $2.4M

$3,914,382

Est. refi paymentEst. refi $13,193/mo

•

5,100

sq ft

178 Cognewaugh Rd, Cos Cob, CT 06807

About this home

SOPHISTICATED & INVITING-GORGEOUS PEACEFUL ACRE + STUNNING LANDSCAPING & EXQUISITE DETAILS. DESIGNED FOR ENTERTAINING & EVERYDAY LIVING. GOURMET KITCHEN W/ ADJACENT FAMILY ROOM W/ FIREPLACE. ELEGANT MASTER SUITE W/ BALCONY & FIREPLACE. FULL WALKUP 3RD FLOOR, FINISHED BASEMENT, SPRINKLER SYSTEM, GENERATOR, SKY LIT BONUS ROOM/5TH BEDROOM W/ CUPOLA & FULL BATH. GREAT, QUIET YET CENTRAL LOCATION CONVENIENT TO SCHOOLS, TOWN, TRAIN & BEACH.

Single-familyProperty Type

1997Year Built

1.39 acresLot Size

$768Est. Price/Sq.Ft.

3 car garageParking

Listed by Elizabeth Johnson • Sotheby's International Realty

Bought with Roxana Bowgen • Sotheby's International Realty

Redfin checked: a minute ago

•Source:GMLS #76518

Redfin Estimate

$3,914,382

$1.5M since sold in October 2010$159K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 38.8% higher than the average sale price ($2.82M) of 5 comparable homes.

SOLD SEP 15, 2026
$2,675,000
A
4 beds4 baths4,851 sq ft
3 Carriage Rd, Cos Cob, CT 06807
SOLD AUG 7, 2026
$1,875,000
B
4 beds4.5 baths4,391 sq ft
37 W Rock Trl, Stamford, CT 06902
SOLD MAY 15, 2026
$2,550,000
C
4 beds4.5 baths4,161 sq ft
150 N Old Stone Bridge Rd, Cos Cob, CT 06807
SOLD MAY 21, 2026
$3,000,000
D
4 beds4.5 baths3,734 sq ft
29 Old Stone Bridge Rd, Cos Cob, CT 06807
SOLD JUL 16, 2026
$4,000,000
E
5 beds4.5 baths4,916 sq ft
27 Cognewaugh Rd, Cos Cob, CT 06807

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Earn from this home

Sell

$2,518,612

Est. take-home

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Refinance

Est. cash available

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Rent

$4,524/mo

Redfin rental estimate

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Market trends in 06807, CT

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

105.6%

0.4% MoM

Median sale price

$1.9M

$87K MoM

Avg. days on market

19d

4 days MoM

Recently sold homes

2 MoM

New listings for sale

OPEN SUN, 1PM TO 3PM
$775,000
2 beds1.5 baths1,096 sq ft
102 Valley Rd #20, Cos Cob, CT 06807
OPEN SUN, 1PM TO 3PM
$3,095,000
5 beds4 baths3,193 sq ft
36 Mianus View Ter, Cos Cob, CT 06807
See all

Provided by Redfin

Sale history for 178 Cognewaugh Rd

Join or sign in to view all info

Year

Property tax

Land + Additions

Assessment*

2023

$21,589 (+1.4%)

$559,650 + $1,335,810

$1,895,460

2022

$21,281 (−9.6%)

$559,650 + $1,326,990

$1,886,640

2021

$23,548

$508,760 + $1,522,990

$2,031,750

2020

$23,548 (−0.5%)

$508,760 + $1,522,990

$2,031,750

2019

$23,656 (+7.7%)

$508,760 + $1,516,620

$2,025,380

2018

$21,964

$508,760 + $1,422,960

$1,931,720

2017

$21,964 (+8.6%)

$508,760 + $1,422,960

$1,931,720

2016

$20,221 (+9.8%)

$508,760 + $1,296,680

$1,805,440

2014

$18,411

$708,190 + $970,130

$1,678,320

Tax history for 178 Cognewaugh Rd

Year

Property tax

Land + Additions

Assessment*

2023

$21,589 (+1.4%)

$559,650 + $1,335,810

$1,895,460

2022

$21,281 (−9.6%)

$559,650 + $1,326,990

$1,886,640

2021

$23,548

$508,760 + $1,522,990

$2,031,750

2020

$23,548 (−0.5%)

$508,760 + $1,522,990

$2,031,750

2019

$23,656 (+7.7%)

$508,760 + $1,516,620

$2,025,380

2018

$21,964

$508,760 + $1,422,960

$1,931,720

2017

$21,964 (+8.6%)

$508,760 + $1,422,960

$1,931,720

2016

$20,221 (+9.8%)

$508,760 + $1,296,680

$1,805,440

2014

$18,411

$708,190 + $970,130

$1,678,320

*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

1.39 Acres

Year renovated

—

Sq. Ft.

4,942

Year built

1997

Style

Single Family Residential

County

Fairfield County

APN

1855765

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: 4
# of Half Bathrooms: 1
Bathrooms Total Integer: 5
Bathrooms Total Decimal: 4.5

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

Interior Features
Interior Features: Eat-in Kitchen, Central Vacuum
Has Fireplace(s)
# of Fireplaces Total: 4
Basement: Finished, Full

Exterior

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

Property Information
Property Sub-Type: Single Family Residence
Year Built: 1997
Roof: Wood
Construction Materials: Shingle Siding
Security Features: Security System
Other Equipment: Generator
Building Area Total: 5100.0
Building Area Source: Appraiser

Lot Information
Lot Features: Parklike
Lot Size Area: 1.39
Lot Size Units: Acres
Lot Size Square Feet: 60548.4
Lot Size Acres: 1.39
Zoning: RA-2

Financial

Tax Information
Tax Annual Amount: $17,836
Tax Assessed Value: $2,074,940

Utilities

Utilities Information
Utilities: Propane
Sewer: Septic Tank
Water Source: Well

Location

School Information
Elementary School: North Street
Middle Or Junior School: Central

Public facts

Beds: 4
Baths: 7.0
Sq. Ft.: 4,942
Stories: 2.0
Lot Size: 1.39 acres
Style: Single Family Residential
Year Built: 1997
Year Renovated: —
County: Fairfield County
APN: 1855765

Home facts updated by county records on Jul 12, 2023

Around this home

Schools

North Street School

Public PreK-5 • Assigned • 1.7mi

9/10

Central Middle School

Public 6-8 • Assigned • 1.5mi

8/10

Greenwich High School

Public 9-12 • Assigned • 2.1mi

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 98° expected this year, 15 days in 30 years

6/10 Wind Factor

65% 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

$3.72M – $4.50M

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New listings for sale in 06807

OPEN SUN, 1PM TO 3PM

$775,000

2 beds1.5 baths1,096 sq ft

102 Valley Rd #20, Cos Cob, CT 06807

OPEN SUN, 1PM TO 3PM

$3,095,000

5 beds4 baths3,193 sq ft

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Home values near 178 Cognewaugh Rd

Data from public records.

Address	Redfin Estimate
172 Cognewaugh Road, Cos Cob, CT 4 Beds \| 4 Baths \| 3865 Sq. Ft.	$3,315,069
155 Cognewaugh Road, Cos Cob, CT 4 Beds \| 5 Baths \| 4836 Sq. Ft.	$2,661,777

Address	Redfin Estimate
163 Cognewaugh Road, Cos Cob, CT 4 Beds \| 3.5 Baths \| 3474 Sq. Ft.	$2,605,838
191 Cognewaugh Road, Cos Cob, CT 6 Beds \| 3.5 Baths \| 6079 Sq. Ft.	$4,254,055

Address	Redfin Estimate
181 Cognewaugh Road, Cos Cob, CT 4 Beds \| 5 Baths \| 5335 Sq. Ft.	$3,887,010
145 Cognewaugh Road, Cos Cob, CT 4 Beds \| 3.5 Baths \| 3582 Sq. Ft.	$3,045,380

Property information provided by GMLS when last listed in 2010. This data may not match . Learn more.

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