Toni Riordan
Berkshire Hathaway NE Prop.
(475) 252-9530
81 Total Sales
1 in Cos Cob
$1,020,000 Price
12 Old Post Rd Cos Cob, CT 06807
Cos Cob Area
5
Beds
2.5
Baths
3,340
Sq Ft
0.42
Acre Lot
Highlights
- Indoor Spa
- Private Pool
- Finished Attic
- Cos Cob School Rated A
- Tudor Architecture
- 2 Fireplaces
About This Home
As of August 2026A 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
BHHS New England Properties License #RES.0751554 Listed on: 05/07/2026
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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
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
Listed on
May 7, 2026
Closed on
Aug 5, 2026
Sold by
Glenn David and Glenn Yoshie
Bought by
Seller's Agent
Mie Glenn
BHHS New England Properties
Buyer's Agent
Barbara Daly
Sotheby's International Realty
List Price
$2,350,000
Sold Price
$2,025,000
Premium/Discount to List
-$325,000
-13.83%
Views
115
Purchase Details
Closed on
Dec 13, 2004
Sold by
Morrow Catherine Rae
Bought by
Glenn David and Glenn Yoshie
Purchase Details
Closed on
Aug 29, 1990
Sold by
Cole Lee
Bought by
Tomey Catherine
Home Values in the Area
Average Home Value in this Area
Agents Specializing in Cos Cob, CT
-
Toni Riordan
-
Robin Bartholomew
Robin Bartholomew
Berkshire Hathaway NE Prop.
(914) 690-6417
66 Total Sales
17 in Cos Cob
$1M - $3.9M Price Range
-
Deb Lombardo
Deb Lombardo
Coldwell Banker Realty
(475) 271-1086
36 Total Sales
1 in Cos Cob
$1,106,625 Price
-
Jackie Calhoun
Jackie Calhoun
Coldwell Banker Realty
(845) 613-4943
185 Total Sales
1 in Cos Cob
$3,600,000 Price
-
Jessica Lane
JL
Jessica Lane
Serhant Connecticut LLC
(203) 990-1837
32 Total Sales
1 in Cos Cob
$1,350,000 Price
-
Urs Klarer
Urs Klarer
Coldwell Banker Realty
(475) 268-1377
66 Total Sales
1 in Cos Cob
$815,000 Price
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
Agents Affiliated with this Home
-
Mie Glenn
MG
Seller's Agent in 2026
Mie Glenn
BHHS New England Properties
3 Total Sales
-
Barbara Daly
BD
Buyer's Agent in 2026
Barbara Daly
Sotheby's International Realty
(203) 912-8504
7 Total Sales
-
Carola Encarnacion
Buyer's Agent in 2022
Carola Encarnacion
Station Cities
(646) 721-7976
29 Total Sales
-
Linda Michonski
Buyer's Agent in 2016
Linda Michonski
Douglas Elliman of Connecticut
(203) 561-0694
17 Total Sales
Map
Source: Greenwich Association of REALTORS®
MLS Number: 124934
APN: GREE-000008-000000-001596-S000000
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
Listing data courtesy of Greenwich MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use, that it may not be used for any purpose other than to
identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.
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