$1,375,000

9 Walnut Street, Cos Cob CT, 06807

Price per sqft$60.70

Built in1970

Property size1,482 sqft

Lot size0.52 Acres

Property typeLand

Overview

Sold

Closed

Listed Oct 27, 2025

Updated Aug 4

..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.

Additional information

MLS^® ID: 123887

Exterior Features

Lot Size: 0.52 Acres

Other Property Details

Taxes: $7,487
Tax Frequency: Annually

Also listed on GNHAR

Listed by Peter Janis with BHHS New England Properties
Listing Contact:

The IDX display contains information sourced from the Greenwich Association of REALTORS® as of 8/4/2026. This data is intended solely for personal, non-commercial use and is not to be utilized for any other purposes except to identify potential properties for purchase. Although the MLS data displayed is typically considered reliable, it is not guaranteed to be accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and are advised to conduct their own investigations or seek professional assistance. Other sources besides the Listing Agent may have contributed to the MLS data presented. Unless expressly specified in writing, the Broker/Agent has not confirmed any information obtained from external sources. The Broker/Agent may or may not have acted as the Listing and/or Selling Agent and cannot guarantee the accuracy of property locations displayed on any map. Any compensation offers are solely made to participants of the MLS where the listing is registered.

Data last updated on 8/4/2026 at 1:39 AM UTC