$2,025,000
SOLD AUG 6, 2026

12 Old Post Rd Cos Cob, CT 06807

Cos Cob Area
5 Beds
2.5 Baths
3,340 Sq Ft
0.42 Acre Lot

Sale Details

Date Sold: August 6, 2026

$606 Per Sq Ft

14% Below List Price

56 Days on Market

Highlights

  • Indoor Spa
  • Tudor Architecture
  • 2 Fireplaces
  • Private Pool
  • Finished Attic
  • Solarium

About This Home

As of August 2026

A special opportunity to own this charming oasis close to town. Tucked behind iron gates awaits an enclave with pool, mature trees and ivy. The main floor has a spacious living room that leads to a heated sunroom, a formal dining room and a kitchen with a commercial cooktop and vent system. The second floor has a primary bedroom with a marble bath and shower and en-suite sitting room/closet. 2 other bedrooms with a sunroom and library. The top floor has another bedroom and an office space. There is a salt-water in-ground pool with a spa and stone patio. The back staircase leads to the primary bedroom sitting area. The fireplace in the kitchen is now used as wine rack. FAR allows up to5,750 sqft.

Last Agent to Sell the Property

Mie Glenn

BHHS New England Properties License #RES.0751554 Listed on: 05/07/2026

BHHS New England Properties

Last Buyer's Agent

Barbara Daly

Sotheby's International Realty License #RES.0158098

Sotheby's International Realty
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Home Details

Home Type

  • Single Family

Est. Annual Taxes

  • $10,346

Year Built

  • Built in 1922 | Remodeled in 2016

Lot Details

  • 18,295 Sq Ft Lot
  • Fenced Yard
  • Stone Wall
  • Level Lot
  • Property is zoned R-12

Parking

  • 1 Car Attached Garage
  • Automatic Garage Door Opener
  • Garage Door Opener

Home Design

  • Tudor Architecture
  • Brick Exterior Construction
  • Asphalt Roof
  • Stucco

Interior Spaces

  • 3,340 Sq Ft Home
  • Rear Stairs
  • 2 Fireplaces
  • Formal Dining Room
  • Home Office
  • Solarium
  • Indoor Spa
  • Finished Attic
  • Home Security System
  • Washer and Dryer

Kitchen

  • Eat-In Kitchen
  • Freezer
  • Kitchen Island

Bedrooms and Bathrooms

  • 5 Bedrooms
  • Cedar Closet

Basement

  • Walk-Out Basement
  • Basement Fills Entire Space Under The House

Outdoor Features

  • Private Pool
  • Terrace
  • Shed

Utilities

  • Forced Air Heating and Cooling System
  • Heating System Uses Gas
  • Heating System Uses Natural Gas
  • Gas Available
  • Gas Water Heater

Listing and Financial Details

  • Assessor Parcel Number 08-1596/S

Home Details

Home Type

Single Family

Est. Annual Taxes

$10,346

Year Built

Built in 1922 | Remodeled in 2016

Lot Details

0.42 Acres

Parking

1

Listing Details

  • Prop. Type: Residential
  • Year Built: 1922
  • Property Sub Type: Single Family Residence
  • Lot Size Acres: 0.42
  • Inclusions: Washer/Dryer, All Kitchen Applncs
  • Architectural Style: Tudor
  • Effective Year Built: 2016
  • Cooling System:Central AC: Yes
  • Included:WasherDryer: Yes
  • Lot Description:Level: Yes
  • Features:Terrace: Yes
  • Features:Fenced Yard: Yes
  • Features:Security System2: Yes
  • Lot Description:Stone Wall: Yes
  • Features:Hot Tub: Yes
  • Features:Back Stairs: Yes
  • Features:Freezer(s): Yes
  • Features:Cedar Closet: Yes
  • Entry Hall LevelFP 1st37: 1
  • Design: Tudor: Yes
  • Special Features: None
  • Year Renovated: 2016

Interior Features

  • Has Basement: Walk-Out Access, Full
  • Full Bathrooms: 2
  • Half Bathrooms: 1
  • Total Bedrooms: 5
  • Fireplaces: 2
  • Fireplace: Yes
  • Interior Amenities: Cedar Closet(s), Kitchen Island, Eat-in Kitchen, Back Stairs, Hot Tub
  • Kitchen Comments:Island: Yes
  • Living Room LevelFP:FP2: 1
  • Laundry LevelFP:LL52: 1
  • Kitchen Comments:Eat-In Kitchen: Yes
  • Attic Finished: Yes
  • Other Room Comments 3:Office Space3: Yes
  • Basement Type:Full: Yes
  • Dining Room Comments:Formal: Yes
  • Basement Type:Walkout: Yes
  • Other Room Comments 3:Solarium3: Yes
  • Family Room Comments:Solarium5: Yes
  • Living Room LevelFP 1st38: 1
  • Dining Room LevelFP 1st39: 1
  • Family Room LevelFP 1st41: 1
  • Powder Room LevelFP 1st42: 1
  • Kitchen LevelFP 1st43: 1
  • Primary Bdrm LevelFP 2nd44: 1
  • Primary Bath LevelFP 2nd45: 1
  • LibraryDen LevelFP 2nd41: 1

Exterior Features

  • Roof: Asphalt
  • Lot Features: Level, Stone Wall
  • Pool Private: Yes
  • Construction Type: Brick, Stucco
  • Other Structures: Shed(s)
  • Patio And Porch Features: Terrace
  • Roof:Asphalt: Yes
  • Exterior:Brick: Yes
  • Exterior:Stucco: Yes
  • Outbuildings:Shed(s): Yes

Garage/Parking

  • Attached Garage: No
  • Garage Spaces: 1.0
  • Parking Features: Attached Garage, Garage Door Opener
  • Features:Auto Garage Door: Yes
  • Parking Description: Attached Garage: Yes

Utilities

  • Water Source: Public
  • Cooling: Central Air
  • Security: Security System
  • Cooling Y N: Yes
  • Heating: Natural Gas, Forced Air
  • Heating Yn: Yes
  • Sewer: Town Sewer
  • Utilities: Natural Gas Available
  • Heat System:Forced Air: Yes
  • Heat Fuel:Gas: Yes
  • Water Source:Public: Yes
  • Sanitation Source:Town Sewer: Yes
  • Hot Water:Gas2: Yes
  • Gas Source:Available2: Yes

Schools

  • Elementary School: Cos Cob
  • Middle Or Junior School: Central

Lot Info

  • Zoning: R-12
  • Lot Size Sq Ft: 18295.2
  • Parcel #: 08-1596/S

Tax Info

  • Tax Annual Amount: 10345.5

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Closed on
Dec 13, 2004
Sold by
Bought by

Purchase Details

Closed on
Aug 29, 1990
Sold by
Bought by
Source: Public Records

Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Agents Specializing in Cos Cob, CT

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Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Type Sale Price Title Company
Warranty Deed $1,150,000 --
Deed $575,000 --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Loan Amount Loan Type
Closed $353,064 No Value Available
Closed $250,000 No Value Available
Closed $413,000 No Value Available
Previous Owner $299,000 No Value Available
Previous Owner $313,000 No Value Available
Previous Owner $325,000 No Value Available
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
08/06/2026 08/06/26 Sold $2,025,000 -2.4% $606 / Sq Ft
07/02/2026 07/02/26 Pending -- -- --
06/10/2026 06/10/26 Price Changed $2,075,000 -11.7% $621 / Sq Ft
05/07/2026 05/07/26 For Sale $2,350,000 0.0% $704 / Sq Ft
06/01/2022 06/01/22 Rented $9,350 +6.3% --
05/24/2022 05/24/22 Under Contract -- -- --
05/20/2022 05/20/22 For Rent $8,800 +27.5% --
11/14/2016 11/14/16 Rented $6,900 -8.0% --
11/14/2016 11/14/16 Under Contract -- -- --
06/17/2016 06/17/16 For Rent $7,500 -- --
Source: Greenwich Association of REALTORS®

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $12,196 $986,790 $490,420 $496,370
2024 $11,778 $986,790 $490,420 $496,370
2023 $11,482 $986,790 $490,420 $496,370
2022 $11,378 $986,790 $490,420 $496,370
2021 $11,893 $987,770 $435,890 $551,880
2020 $11,873 $987,770 $435,890 $551,880
2019 $11,992 $987,770 $435,890 $551,880
2018 $12,219 $987,770 $435,890 $551,880
2017 $11,872 $987,770 $435,890 $551,880
2016 $11,684 $987,770 $435,890 $551,880
2015 $9,732 $816,060 $451,990 $364,070
2014 $9,487 $816,060 $451,990 $364,070
Source: Public Records

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Map

Source: Greenwich Association of REALTORS®

MLS Number: 124934

Greenwich Association of REALTORS®

APN: GREE M:08 B:1596/S

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