20 Thomas St, Cos Cob, CT 06807
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OFF MARKET

20 Thomas St
Cos Cob, CT 06807

Cos Cob
  • 3 Beds
  • 3 Baths
  • 2,500 sqft

$1,536,400

Trulia Estimate
as of Jul 9, 2026
Est. Refi. Payment $9,935/mo*
Refinance Your Home

$1,536,400

Trulia Estimate
as of Jul 9, 2026
Est. Refi. Payment $9,935/mo*
Refinance Your Home
3 Beds
3 Baths
2,500 sqft

Local Information

  • Map ViewExplore the area around 20 Thomas St.
  • Schools1 Preschool School1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Description

Greenwich home with bonus 2-car detached garage. Flexible open floor plan with numerous configurations. A front porch and mudroom leads to a combination kitchen and dining or living room. Adjacent to the open living space are 2 bright bedrooms. The 3rd room can be easily used as a 3rd bedroom, office, nursery, or living room. The lower level includes a partially finished basement with a laundry room, storage, and attached garage. Walkout of the lower level to a flat and spacious backyard great for entertaining. Walk to schools, parks, and shopping. Enjoy all that Cos Cob has to offer. FAR allows generous expansion in multifamily zone.
20 Thomas St, Cos Cob, CT 06807 is a 3 bedroom, 3 bathroom, 2,500 sqft single-family home in Cos Cob, built in 1950. It last sold for $500,000 on Jan 30, 2019. It is currently off market. The Trulia Estimate is $1,536,400, with a rent estimate of $5,992/month.

Home Highlights

Parking
Garage
Outdoor
Porch, Patio
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago

Home Details for 20 Thomas St

Interior Features

Interior Details
BasementAdditional StorageAtticNumber of Rooms: 8Types of Rooms: Walk In Closet, Dining Room, Family Room, Laundry Room, Master Bath, Mud Room, Office, PantryStorageCeiling Fan
Heating & Cooling
Heating: Forced Air, GasAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Levels, Entrance, & Accessibility
Stories: 2Floors: Hardwood
Appliances & Utilities
Cable ReadyDishwasherDryerMicrowaveRefrigeratorWasher

Exterior Features

Exterior Home Features
Roof: AsphaltExterior: Stone, VinylLawnPatioPorch
Parking & Garage
GarageParking Spaces: 6Parking: Garage Detached, Off Street

Property Information

Year Built
Year Built: 1950Year Updated: 2020
Property Type / Style
Property Type: Single Family HomeArchitecture: Ranch / Rambler

Community

Units in Building: 1

Lot Information

Lot Area: 6969 sqft

Price History for 20 Thomas St

DatePriceEventSource
01/30/2019$500,000Sold
N/A
04/19/2018$599,000Listed For SaleAgent Provided

Market trends in Greenwich

Last updated May 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
$1.76M
$257KMoM
Sale-to-List Price
101.2%
1.0%MoM
Price per sq ft
$779
$4MoM
Available listings
183
8MoM
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Property Tax and Assessment

Year2025
Tax$6,916
Assessment$559,580
Home facts updated by county records

Comparable Sales for 20 Thomas St

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
55 Cos Cob Ave, Cos Cob, CT
0.16
Single-Family Home
$910,000
04/13/26
3
2
1,762
24 Rippowam Rd, Cos Cob, CT
0.10
Single-Family Home
$1,595,000
08/22/25
4
2.5
3,827
36 Cary Rd, Riverside, CT
0.20
Single-Family Home
$1,850,000
10/15/25
4
4
2,400
57 Orchard St, Cos Cob, CT
0.40
Single-Family Home
$1,200,000
07/31/25
3
2.5
1,836
16 Kent Pl, Cos Cob, CT
0.37
Single-Family Home
$1,690,000
05/15/26
4
2.5
2,410
14 Cary Rd, Riverside, CT
0.21
Single-Family Home
$900,000
04/15/26
2
2
1,625
23 Westview Pl, Riverside, CT
0.29
Single-Family Home
$2,250,000
04/03/26
4
3.5
2,641
31 Thornhill Rd, Riverside, CT
0.31
Single-Family Home
$2,050,000
06/16/26
4
4
2,074
152 Valley Rd, Cos Cob, CT
0.34
Single-Family Home
$1,410,000
08/14/25
4
3
2,100
17 Meadow Dr, Cos Cob, CT
0.38
Single-Family Home
$1,152,000
11/21/25
3
2
1,331

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Assigned Schools

These are the assigned schools for 20 Thomas St.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

Neighborhood Overview

Cos Cob
See Local Highlights
Neighborhood stats provided by third party data sources.

What Locals Say about Cos Cob

At least 1 Trulia users voted on each feature.

  • 100 % Say neighbors are friendly

  • 100 % Say there are community events

  • 100 % Say there's holiday spirit

  • 100 % Say it's walkable to grocery stores

  • 100 % Say it's walkable to restaurants

  • 100 % Say parking is easy

  • 100 % Say car is needed

  • 100 % Say streets are well-lit

  • 100 % Say it's dog friendly

Sourced by Trulia users. Learn more about our methodology.

LGBTQ Local Legal Protections

Apartments for Rent

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Explore by feature - Pet Friendly

39 pet-friendly rentals in Cos Cob, CT

Explore by feature - Garage

61 rentals with a garage in Cos Cob, CT

Explore by feature - Air Conditioning

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Explore by feature - Pool

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Explore by feature - Washer/dryer

112 rentals with a washer/dryer in Cos Cob, CT

Explore by feature - Outdoor Space

25 rentals with an outdoor space in Cos Cob, CT

Homes for sale near 20 Thomas St

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Off Market Homes Near 20 Thomas St

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