Sold
Last Sold Price
22,651 Lot Size0.52 Acres
9 Walnut St, Cos Cob, CT 06807
LandProperty Type
0.52 acresLot Size
1970Year Built

Description

..52-Acre Buildable Lot with Existing Cottage -- North Mianus
Nestled at the end of a private road in the desirable North Mianus neighborhood, this .52-acre property offers a rare combination of privacy, potential, and flexibility. Build your own custom home--ideal for builders, investors, or end-users looking to create their dream residence. In addition to the new-construction opportunity, the property includes an existing grandfathered 1-bedroom, 1-bath cottage, perfect for rental income, a guest
.....52-Acre Buildable Lot with Existing Cottage -- North Mianus

Nestled at the end of a private road in the desirable North Mianus neighborhood, this .52-acre property offers a rare combination of privacy, potential, and flexibility. Build your own custom home--ideal for builders, investors, or end-users looking to create their dream residence. In addition to the new-construction opportunity, the property includes an existing grandfathered 1-bedroom, 1-bath cottage, perfect for rental income, a guest house, or an in-law suite while the main home is being built. A rare offering in one of Greenwich's most sought-after areas, located within the North Mianus Elementary and Eastern Middle School districts.
  • Listed by: Peter Janis 203.869.0500 peterjanis@bhhsne.com • BHHS New England Properties
  • Listed by: Sue Lapsien 203.869.0500 susannelapsien@bhhsne.com • BHHS New England Properties
Listing closed: 08/03/2026 12:00 AM • Source: GMLS, MLS#: 123887

Location

Listing Courtesy of BHHS New England Properties, Peter Janis; BHHS New England Properties, Sue Lapsien

Sold By Houlihan Lawrence, Spencer Sodokoff

Add your commute

Payment Calculator

$7,613 per month

30 year fixed, 6.55% Interest

Principal and Interest

$6,989

Property Taxes

$624

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Know your buying power with a preapproval and custom rate in minutes

Rocket Mortgage1

Property Information for 9 Walnut Street

Property Details
  • Taxes: $7,487 / year
  • MLS Type: Land
  • Section: North Mianus
  • Design: Colonial
Building Information
  • Lot Size: 0.52 AC
Summary
Location and General Information
  • Area: 4 - Cos Cob
  • Elementary School: North Mianus
  • Middle School: Eastern Middle
  • Directions: Valley Road to Walnut
  • City: Cos Cob
  • MLS Area Major: 4 - Cos Cob
  • Longitude: -73.580535
  • Latitude: 41.07
  • Postal Code: 06807
  • County: Fairfield
  • State Or Province: CT
HOA and Fees
  • Parcel Number: 08-2718/S
  • Association Chg/Yr: $0
  • Taxes: $7,487
Interior and Exterior Features
Interior Features
  • Bathrooms Total Integer: 1
  • Baths Full: 1
  • Baths Half: 0
  • Beds Total: 3
  • Cooling: No
  • Heating: Yes
  • Heat System: Hot Water: Yes
  • Cooling: None: Yes
  • Cooling System: None
Exterior Features
  • Exterior: Wood Siding: Yes
  • Exterior: Wood Siding
Property
Lot Information
  • Location Property Info: SPOLP: $.87
  • Location Property Info: List PriceAcre: $2,875,000.00
  • Location Property Info: Owner: Teddiv LLC
  • Location Property Info: Zoning: R-12
  • Location Property Info: Owner Financing: No
  • Location Property Info: Section: North Mianus
  • Location Property Info: RTM District: 08
  • Location Property Info: CIOA: No
  • Location Property Info: For Rent: No
  • Lot Description: Cul-De-Sac,Level
  • Lot Size Acres: 0.52
  • Lot Size Area: 0.52
  • Lot Size Square Feet: 22651.2
  • Lot Size Units: Acres
  • Lot Description: Cul-de-Sac: Yes
  • Lot Description: Level: Yes
  • Dwelling Info: Dwelling: Yes
  • Dwelling Info: SqFt Source: Taxcard
  • Dwelling Info: Rooms: 5.0
  • Dwelling Info: # HBths: 0.0
Property and Assessments
  • General Property Info: Acres -: 0.52
  • General Property Info: # Lots: 1.0
  • General Property Info: Lot Location: Front
  • General Property Info: Land Staked: No
  • General Property Info: Elementary School: North Mianus
  • General Property Info: Middle School: Eastern Middle
  • Assessment: $714,140
  • Zoning: R-12
  • Sanitation Source: Town Sewer
  • Outbuildings: Guest House
  • Approvals Guarenteed: Planning Zoning: Yes
  • Restrictions: None: Yes
Utilities
  • Road Access: Private Road
  • Gas Source: Public Utility: Yes
  • Heat Fuel: Gas: Yes
  • Heat System: Natural Gas, Hot Water
  • Water Source: Public
Multi Family
Building Details
  • Public Remarks: ..52-Acre Buildable Lot with Existing Cottage -- North Mianus Nestled at the end of a private road in the desirable North Mianus neighborhood, this .52-acre property offers a rare combination of privacy, potential, and flexibility. Build your own custom home--ideal for builders, investors, or end-users looking to create their dream residence. In addition to the new-construction opportunity, the property includes an existing grandfathered 1-bedroom, 1-bath cottage, perfect for rental income, a guest house, or an in-law suite while the main home is being built. A rare offering in one of Greenwich's most sought-after areas, located within the North Mianus Elementary and Eastern Middle School districts.

Property History for 9 Walnut Street

DateEvent & SourcePriceAppreciation
Aug 3, 2026

Closed (Public Record)

Public Record #1946681027

$1,375,000
DateEvent & SourcePrice
08/03/2026

Closed (Public Record)

Public Record #1946681027

$1,375,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 9 Walnut Street

Taxable ValueLand$584,360Additions$129,780Total$714,140
Tax Record2025$8,825 ($735 / month)
Home Facts
Beds0Lot Size22,651 SqFtStyleSingle Family ResidenceZoningR-12CountyWESTERN CONNECTICUTAPNGREE M:08 B:2718/S

Schools near 9 Walnut Street

This home is within Greenwich School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
Rating
School
Distance
North Mianus School
PublicK to 5

Eastern Middle School
Public6 to 8

Greenwich High School
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Cos Cob
Cos Cob
A relaxed, waterfront haven just 35 miles from New York City. This centuries-old Greenwich neighborhood, once called “Coscobneck”, was home to an Impressionist art colony from the 1890s to the 1920s. With water on two sides (the Cos Cob Harbor to the south and the Mianus River to the east) and...

Similar Homes

New listings in 06807

$1,379,000 | 115 River Road, Unit 5, Cos Cob, CT 06807
1/19
Open: 8/30 01:00PM - 03:00PM

$1,379,000

2
Bedrooms
1,732
Square Feet
a view of a house with a backyard
1/20
Listed By Sotheby's International Realty

$869,500

2
Bedrooms
1,428
Square Feet
a front view of a house with a yard and trees
1/17
Listed By Sotheby's International Realty

$869,500

2
Bedrooms
1,428
Square Feet
a picture of a floor plan
1/34
Listed By Sotheby's International Realty

$1,739,000

4
Bedrooms
6
Bathrooms
2,856
Square Feet
0.11
Acres
a kitchen with granite countertop a refrigerator a sink dishwasher a stove and white cabinets with wooden floor
1/21

$1,800,000

3
Bedrooms
2,486
Square Feet
0.12
Acres
a front view of a building with a garden
1/21

$1,699,000

4
Bedrooms
3,120
Square Feet
a front view of a house with garden
1/42
Listed By CompassOpen: 8/30 01:00PM - 03:00PM

$2,750,000

4
Bedrooms
2,814
Square Feet
0.22
Acres
$759,000 | 453 East Putnam Avenue, Unit 4G, Cos Cob, CT 06807
1/25

$759,000

2
Bedrooms
1,368
Square Feet
$3,250,000 | 13 Lia Fail Way, Cos Cob, CT 06807
1/40

$3,250,000

4
Bedrooms
6,268
Square Feet
1.02
Acres

Nearby home values

AddressSold priceBedsBathsSqftLot (Sqft)
This home: 9 Walnut Street, Cos Cob, CT 06807
$1,375,000
3
1,482
22,651
$1,025,000
3
1,922
11,325
$1
4
3,675
45,738
$210,000
3
1.5
1,898
5,663
$1
2
1
1,881
10,019
$623,000
3
1,173
11,761

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the seller's discretion. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of BHHS New England Properties, Peter Janis; BHHS New England Properties, Sue Lapsien

Based on information from one of the following Multiple Listing Services: Darien MLS, Smart MLS and Greenwich Multiple Listing Service. Information being provided is for the visitor’s personal, noncommercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. The data contained herein is copyrighted by Darien MLS, Smart MLS and Greenwich Multiple Listing Service is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited. Property information referenced on this web site comes from the Internet Data Exchange (IDX) program of the MLS. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. For the avoidance of doubt, the accuracy of all information, regardless of source, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals.