First time on the market in 36 years! This charming four-bedroom, two and a half bath residence presents a wonderful opportunity to reimagine and create a home tailored to your vision. The interiors offer a blank canvas for thoughtful renovation, while the lower level provides bonus living space and flexibility for bedrooms, media room, gym space etc.
Situated across from the Mianus River with a prime location affords quick and easy access to schools, parks, train, shopping and dining.
Highest and Best by Monday 3/30/26 by 5PM.
Sold for $1,300,000
$1,300,000
420 Valley Rd, Cos Cob, CT 06807
4beds
1,601sqft
Residential, Single Family Residence
Built in 1960
0.27 Acres Lot
$-- Zestimate®
$812/sqft
$6,878 Estimated rent
Home value
Not available
Estimated sales range
Not available
$6,878/mo
Zestimate® history
Owner options
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$6,878/mo
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$6,878/mo
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$7,327/mo
Est. payment
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$7,327/mo
Est. payment
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List your homeWhat's special
Zillow last checked:
Listing updated:
Listed by:
Kaori Higgins 203-252-9849,
Higgins Group Greenwich
Bought with:
Blazej Cichy, REB.0790323
Abart Estate LLC
Source: Greenwich MLS, Inc.,MLS#: 124561
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Heating
- Natural Gas, Hot Water
Features
- Basement: Full,Unfinished
- Number of fireplaces: 2
Interior area
- Total structure area: 1,601
- Total interior livable area: 1,601 sqft
Property
Parking
- Total spaces: 1
- Parking features: Garage Door Opener
- Garage spaces: 1
Lot
- Size: 0.27 Acres
Details
- Parcel number: 083660/S
- Zoning: R-12
- Other equipment: Generator
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Ranch
- Property subtype: Residential, Single Family Residence
Materials
- Shingle Siding
- Roof: Asphalt
Condition
- Year built: 1960
Utilities & green energy
- Water: Public
- Utilities for property: Cable Connected
Community & HOA
Location
- Region: Cos Cob
Financial & listing details
- Price per square foot: $812/sqft
- Tax assessed value: $630,140
- Annual tax amount: $7,788
- Date on market: 3/27/2026
- Inclusions: Washer/Dryer
Price history
| Date | Event | Price |
|---|---|---|
| 4/14/2026 | Sold | $1,300,000+36.8%$812/sqft |
Source:  Greenwich MLS, Inc. #124561 Report a problem | ||
| 4/2/2026 | Pending sale | $950,000$593/sqft |
Source: Greenwich MLS, Inc. #124561 Report a problem | ||
| 3/27/2026 | Listed for sale | $950,000$593/sqft |
Source:  Smart MLS #24160915 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $7,788 +3.6% | $630,140 |
| 2024 | $7,521 +2.6% | $630,140 |
| 2023 | $7,332 +0.9% | $630,140 |
| 2022 | $7,266 -2.3% | $630,140 +2% |
| 2021 | $7,438 +0.2% | $617,750 |
| 2020 | $7,425 -1% | $617,750 |
| 2019 | $7,499 +2.3% | $617,750 |
| 2018 | $7,333 -1.2% | $617,750 |
| 2017 | $7,425 +17.2% | $617,750 +16.3% |
| 2015 | $6,335 +2.7% | $531,230 +0.1% |
| 2014 | $6,171 +2.8% | $530,880 |
| 2013 | $6,004 +2.8% | $530,880 |
| 2012 | $5,840 +3.4% | $530,880 |
| 2011 | $5,649 +7.6% | $530,880 -8.6% |
| 2010 | $5,250 +3.4% | $580,720 |
| 2009 | $5,075 +3.6% | $580,720 |
| 2008 | $4,901 +3.5% | $580,720 |
| 2007 | $4,733 +3.8% | $580,720 |
| 2006 | $4,559 +12% | $580,720 +72.5% |
| 2005 | $4,070 +8.7% | $336,630 |
| 2004 | $3,743 +3.4% | $336,630 |
| 2003 | $3,619 -17.2% | $336,630 +44% |
| 2001 | $4,372 +5.7% | $233,800 |
| 2000 | $4,138 -4.6% | $233,800 |
| 1999 | $4,337 | $233,800 |
Find assessor info on the county website
Neighborhood: Cos Cob
Nearby homes
- $2,131,1005 bd5 ba3.5k sqft428 Valley Rd, Cos Cob, CT 06807Off Market
- $2,467,1006 bd5 ba3.6k sqft418 Valley Rd, Cos Cob, CT 06807Off Market
- $1,617,8003 bd2 ba1.8k sqft416 Valley Rd, Cos Cob, CT 06807Off Market
- $1,753,5004 bd2 ba2.5k sqft424 Valley Rd, Cos Cob, CT 06807Off Market
- $1,896,3003 bd2 ba2.9k sqft9 Gregory Rd, Cos Cob, CT 06807Off Market
- $840,2001 bd1 ba739 sqft9 Maple St, Cos Cob, CT 06807Off Market
- $957,8002 bd1 ba974 sqft7 Maple St, Cos Cob, CT 06807Off Market
- $1,592,8004 bd3 ba1.8k sqft434 Valley Rd, Cos Cob, CT 06807Off Market
Nearby schools
GreatSchools rating
- 9/10North Mianus SchoolGrades: K-5Distance: 0.6 mi
- 10/10Eastern Middle SchoolGrades: 6-8Distance: 2.2 mi
- 10/10Greenwich High SchoolGrades: 9-12Distance: 2.5 mi
Schools provided by the listing agent
- Elementary: North Mianus
- Middle: Eastern
Source: Greenwich MLS, Inc.. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.
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- Connecticut
- Fairfield County
- Greenwich
- 06807
- Cos Cob
- 420 Valley Rd
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