SOLD AUG 31, 2026

Sold on Aug 2026

$8,500,000

•

13,974

sq ft

170 Old Mill Rd, Greenwich, CT 06831

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About this home

Beautifully maintained & stylishly reimagined for today's lifestyle, this exceptional 7-bedroom home offers privacy, comfort & resort-style living on 4 gated acres with pool, spa, terraces & expansive lawn. Designed for both everyday living & entertaining, the floor plan features generously sized rooms, dramatic double-height family room, sophisticated bar area & updated kitchen with 2 oversized islands. The luxurious primary suite includes dual walk-in closets & spa-like bath, while all additional bedrooms are en-suite. A first-floor guest suite, mudroom, collector's garage, finished lower level with family room & gym, plus third-floor storage add flexibility. Thoughtfully designed indoor & outdoor spaces create the perfect setting for enjoying the privacy of this extarordinary home.

Single-familyProperty Type

2005Year Built

4.11 acresLot Size

$608Price/Sq.Ft.

4 car garageParking

Listed by Joanne Mancuso • Houlihan Lawrence

Bought with SOLD DIRECT • Sold Direct

Redfin checked: a few seconds ago

•Source:GMLS #125584

Redfin Estimate

$8,002,218

$498K since sold in August 2026$607K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.6% higher than the average sale price ($7.65M) of 6 comparable homes.

SOLD JUL 31, 2026
$8,000,000
A
6 beds8.5 baths10,887 sq ft
44 Hunting Ridge Rd, Greenwich, CT 06831
SOLD JAN 26, 2026
$8,450,000
B
7 beds8 baths11,615 sq ft
895 Lake Ave, Greenwich, CT 06831
SOLD JUN 16, 2026
$4,650,000
C
5 beds6 baths8,752 sq ft
43 Richmond Hill Rd, Greenwich, CT 06831
SOLD JUL 24, 2026
$14,600,000
D
6 beds8.5 baths11,211 sq ft
30 Meadowcroft Ln, Greenwich, CT 06830
SOLD JUL 7, 2009
$1,825,000
E
3 beds3 baths2,627 sq ft
14 Dewart Rd, Greenwich, CT 06830
SOLD MAY 1, 2026
$8,372,500
F
6 beds7.5 baths9,113 sq ft
13 Wyckham Hill Ln, Greenwich, CT 06831

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Market trends in 06831, CT

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

103.0%

0.9% MoM

Median sale price

$2.7M

$174K MoM

Avg. days on market

31d

3 days MoM

Recently sold homes

6 MoM

New listings for sale

COMING SOON
$6,950,000
5 beds6.5 baths6,849 sq ft
12 Hedgerow Ln, Greenwich, CT 06831
COMING SOON
$3,000,000
5 beds4 baths3,700 sq ft
99 Porchuck Rd, Greenwich, CT 06831
COMING SOON
$2,500,000
4 beds3 baths2,989 sq ft
19 Tamarack Pl, Greenwich, CT 06831
$8,000,000
5 beds6.5 baths5,953 sq ft
50 Zaccheus Mead Ln, Greenwich, CT 06831
$1,300,000
2 beds2.5 baths1,860 sq ft
12 Glenville St #108, Greenwich, CT 06831
$16,850,000
7 beds11.5 baths15,757 sq ft
8 Old Round Hill Ln, Greenwich, CT 06831
$7,750,000
7 beds11.5 baths8,456 sq ft
115 Lower Cross Rd, Greenwich, CT 06831
$9,995,000
6 beds8 baths7,838 sq ft
41 Mohawk Ln, Greenwich, CT 06831
$14,600,000
8 beds12.5 baths17,121 sq ft
164 Round Hill Rd, Greenwich, CT 06831
COMING SOON
$8,495,000
6 beds8.5 baths8,704 sq ft
7 Calhoun Dr, Greenwich, CT 06831
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Rental estimate

Est. $4,803 per month, based on comparable rentals

Sale and tax history for 170 Old Mill Rd

Sale History
Tax History

Date

Event

Price

GMLS #125584

Aug 31, 2026

Sold

$8,500,000

$608/sq ft

Aug 13, 2026

Pending

—

Aug 5, 2026

Contingent

—

Jul 27, 2026

Listed

$8,495,000

$608/sq ft

GMLS #107944

Jul 31, 2020

Sold

$4,270,000

$306/sq ft

Jun 18, 2020

Pending

—

May 28, 2020

Contingent

—

Mar 11, 2020

Price Changed

$4,495,500

$322/sq ft

Nov 8, 2019

Price Changed

$4,945,500

$354/sq ft

Sep 26, 2019

Listed

$5,495,000

$393/sq ft

+37

Two nature sanctuaries embrace a peaceful seven-bedroom Round Hill home on four rolling acres with a pool, spa and gated privacy. Striking modern décor and design melds with light-hearted family and entertaining settings. Marble hall has one of eight fireplaces. Panel millwork, deep archways and formal rooms with French doors open to a pergola-draped terrace with Koi pool. Double story family room has suede-covered bookcase and a balcony. Culinary kitchen with two center islands and Viking/Thermador appointments. Limestone hall to porte-cochere with collector's garage. Master wing exudes luxury with its octagonal bar-room/study. Guest suite off main floor. Garden level gym and meditation terrace. Untapped creative space on third floor captures treetop, garden and pool views.

GMLS #91212

Oct 22, 2015

Sold

$4,900,000

$351/sq ft

Aug 20, 2014

Listed

$5,100,000

$365/sq ft

+43

PRIVATE SETTING CONVENIENTLY LOCATED JUST OFF ROUND HILL RD. GATED ENTRANCE TO A FABULOUS LIGHT FILLED ARCHITECTURALLY BEAUTIFUL ESTATE ON OVER 4 ACRES. EXCEPTIONALLY CONSTRUCTED WITH GREAT ATTENTION TO DETAIL. A GRAND ENTRANCE PLUS MAGNIFICENT FAMILY/ENTERTAINING SPACES. ENJOY TRANQUILITY IN THE SPECTACULAR MASTER SUITE WITH 2 FIREPLACES. GENEROUS STONE TERRACES, POOL W/ SPA, AND KOI POND COMPLETE THE MANICURED PARK LIKE GROUNDS. THEATRE ROOM ON LOWER LEVEL FOR COMPLETION, PLUS SPACE FOR WINE CELLAR OR OTHER.

GMLS #81302

Jul 23, 2012

Delisted

—

Feb 7, 2012

Listed

$7,795,000

$558/sq ft

GMLS #61195

May 5, 2006

Sold

$8,850,000

$633/sq ft

Sep 26, 2005

Listed

$9,400,000

$673/sq ft

GMLS #50003

Oct 4, 2002

Sold

$2,275,000

$163/sq ft

Apr 12, 2002

Listed

$2,200,000

$157/sq ft

Year

Property tax

Land + Additions

Assessment*

2023

$38,447 (+1.0%)

$606,200 + $2,769,340

$3,375,540

2022

$38,076 (−4.2%)

$606,200 + $2,769,340

$3,375,540

2021

$39,759

$527,100 + $2,903,320

$3,430,420

2020

$39,759 (−0.8%)

$527,100 + $2,903,320

$3,430,420

2019

$40,067 (+2.7%)

$527,100 + $2,903,320

$3,430,420

2018

$39,004

$527,100 + $2,903,320

$3,430,420

2017

$39,004 (+1.5%)

$527,100 + $2,903,320

$3,430,420

2016

$38,421 (−41.7%)

$527,100 + $2,903,320

$3,430,420

2014

$65,952

$1,243,900 + $4,768,120

$6,012,020

Public record

Beds

Baths

8.5

Stories

Lot width

—

Lot depth

—

Lot size

4.11 Acres

Year renovated

—

Sq. Ft.

13,974

Year built

2004

Style

Single Family Residential

County

Fairfield County

APN

1845394

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2023.

Property details

Parking

Parking and Garage Information
# of Garage Spaces: 4
Parking Features: Electric Gate

Interior

Bathroom Information
# of Full Bathrooms: 7
# of Half Bathrooms: 3
Bathrooms Total Integer: 10
Bathrooms Total Decimal: 8.5

Heating & Cooling
Has Cooling
Cooling: Central Air
Has Heating
Heating: Hydro-Air, Oil

Interior Features
Interior Features: Kitchen Island, Vaulted Ceiling(s), Bookcases, Pantry, Back Stairs
Has Fireplace(s)
# of Fireplaces Total: 8
Basement: Finished

Exterior

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

Property Information
Property Sub-Type: Single Family Residence
Year Built: 2005
Year Built Effective: 2021
Roof: Wood
Construction Materials: Shingle Siding, Stone
Other Structures: Shed(s)
Security Features: Security System
Other Equipment: Generator, Intercom
Building Area Total: 13974.0
Building Area Source: Taxcard

Lot Information
Lot Features: Fenced, Level
Lot Size Area: 4.11
Lot Size Units: Acres
Lot Size Square Feet: 179031.6
Lot Size Acres: 4.11
Zoning: RA-4

Financial

Tax Information
Tax Annual Amount: $48,175
Tax Assessed Value: $4,758,040

Utilities

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

Location

School Information
Elementary School: Parkway
Middle Or Junior School: Western

Public facts

Beds: 7
Baths: 8.5
Sq. Ft.: 13,974
Stories: 2.0
Lot Size: 4.11 acres
Style: Single Family Residential
Year Built: 2004
Year Renovated: —
County: Fairfield County
APN: 1845394

Home facts updated by county records on Jul 12, 2023

Other

Information For Agents
Special Listing Conditions: Standard

Around this home

Schools

Parkway School

Public K-5 • Assigned • 1.6mi

10/10

Western Middle School

Public 6-8 • Assigned • 5.7mi

8/10

Greenwich High School

Public 9-12 • Assigned • 4.6mi

10/10

Provided by GreatSchools

Climate risks

1/10 Flood Factor

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

3/10 Fire Factor

0.31% chance of being 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

27% 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

Greenwich, CT • 06831

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

86/ 100

Very good sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.1 hrs

5.6 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$7.60M – $9.20M

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New listings for sale in 06831

COMING SOON

$6,950,000

5 beds6.5 baths6,849 sq ft

12 Hedgerow Ln, Greenwich, CT 06831

COMING SOON

$3,000,000

5 beds4 baths3,700 sq ft

99 Porchuck Rd, Greenwich, CT 06831

COMING SOON

$2,500,000

4 beds3 baths2,989 sq ft

19 Tamarack Pl, Greenwich, CT 06831

$8,000,000

5 beds6.5 baths5,953 sq ft

50 Zaccheus Mead Ln, Greenwich, CT 06831

$1,300,000

2 beds2.5 baths1,860 sq ft

12 Glenville St #108, Greenwich, CT 06831

$16,850,000

7 beds11.5 baths15,757 sq ft

8 Old Round Hill Ln, Greenwich, CT 06831

$7,750,000

7 beds11.5 baths8,456 sq ft

115 Lower Cross Rd, Greenwich, CT 06831

$9,995,000

6 beds8 baths7,838 sq ft

41 Mohawk Ln, Greenwich, CT 06831

$14,600,000

8 beds12.5 baths17,121 sq ft

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Home values near 170 Old Mill Rd

Data from public records.

Address	Redfin Estimate
148 Old Mill Road, Greenwich, CT 3 Beds \| 3 Baths \| 1772 Sq. Ft.	$1,501,824
187 Old Mill Road, Greenwich, CT 4 Beds \| 2.5 Baths \| 4194 Sq. Ft.	$5,363,869

Address	Redfin Estimate
184 Old Mill Road, Greenwich, CT 4 Beds \| 4.5 Baths \| 5593 Sq. Ft.	$4,785,792
186 Old Mill Road, Greenwich, CT 3 Beds \| 1.5 Baths \| 1270 Sq. Ft.	$2,701,503

Address	Redfin Estimate
195 Old Mill Road, Greenwich, CT 5 Beds \| 5.5 Baths \| 5229 Sq. Ft.	$3,380,444
180 Old Mill Road, Greenwich, CT 3 Beds \| 3 Baths \| 4414 Sq. Ft.	$4,832,173

Property information provided by GMLS when last listed in 2026. This data may not match . Learn more.

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About this home

Redfin Estimate

Market trends in 06831, CT

Homeowner tools

Sale and tax history for 170 Old Mill Rd

Public record

Property details

Around this home

Schools

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 06831

Home values near 170 Old Mill Rd

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