Tucked away in a private Cos Cob setting, this thoughtfully designed home offers easy single-level living with a flexible second-floor bonus space perfect for a home office, gym, media room or playroom. Sunlit interiors include a welcoming foyer, spacious living room with a wood-burning fireplace, & a stunning glass sunroom that brings the outdoors in. The dining room flows into an eat-in kitchen with a charming greenhouse breakfast nook. A home office, wet bar, powder room, laundry & attached two-car garage add everyday convenience. The bedroom wing features a spacious primary suite, two additional bedrooms, a hall bath, and a fourth bedroom with direct access to the fenced deck, sparkling pool and inviting outdoor entertaining spaces--all just moments from the best of Cos Cob. Sold As Is
For sale
$2,499,000
10 Steep Hollow Ln, Cos Cob, CT 06807
4beds
3,852sqft
Residential, Single Family Residence
Built in 1953
2 Acres Lot
$3,152,300 Zestimate®
$649/sqft
$-- HOA
What's special
- 12 days |
- 2,720 |
- 85 |
Zillow last checked:
Listing updated:
Listed by:
Fiona Porter 203-434-0493,
Keller Williams Prestige Props
Source: Greenwich MLS, Inc.,MLS#: 125420
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Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 2
- 1/2 bathrooms: 1
Heating
- Combination, Oil
Cooling
- Partial A/C, Wall Unit(s)
Appliances
- Laundry: In Kitchen
Features
- Eat-in Kitchen
- Basement: None
- Number of fireplaces: 1
Interior area
- Total structure area: 3,852
- Total interior livable area: 3,852 sqft
Property
Parking
- Total spaces: 2
- Parking features: Off Street, Garage Door Opener
- Garage spaces: 2
Features
- Patio & porch: Screened, Deck
- Has private pool: Yes
- Fencing: Fenced
Lot
- Size: 2 Acres
- Features: Level
Details
- Additional structures: Shed(s)
- Parcel number: 083381
- Zoning: RA-2
- Other equipment: Generator
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Residential, Single Family Residence
Materials
- See Remarks
- Roof: Asphalt,Other
Condition
- Year built: 1953
- Major remodel year: 2025
Utilities & green energy
- Sewer: Septic Tank
- Water: Public
- Utilities for property: Cable Connected
Community & HOA
Location
- Region: Cos Cob
Financial & listing details
- Price per square foot: $649/sqft
- Tax assessed value: $1,112,930
- Annual tax amount: $13,400
- Date on market: 7/10/2026
- Inclusions: Washer/Dryer, All Kitchen Applncs
Estimated market value
$3,152,300
$2.81M - $3.56M
$8,030/mo
Price history
| Date | Event | Price |
|---|---|---|
| 7/10/2026 | Listed for sale | $2,499,000+67.2%$649/sqft |
Source:  Smart MLS #24188875 Report a problem | ||
| 6/16/2004 | Sold | $1,495,000$388/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $13,400 +2.8% | $1,112,930 |
| 2024 | $13,032 +2.8% | $1,112,930 |
| 2023 | $12,676 +1% | $1,112,930 |
| 2022 | $12,554 +2.1% | $1,112,930 +4.9% |
| 2021 | $12,291 | $1,060,500 |
| 2020 | $12,291 -0.8% | $1,060,500 |
| 2019 | $12,387 +3.5% | $1,060,500 +0.8% |
| 2018 | $11,963 | $1,052,170 |
| 2017 | $11,963 -8.5% | $1,052,170 -9.3% |
| 2015 | $13,081 +2.7% | $1,160,670 |
| 2014 | $12,733 +2.7% | $1,160,670 |
| 2013 | $12,396 -2.9% | $1,160,670 |
| 2012 | $12,767 +8.8% | $1,160,670 |
| 2011 | $11,734 -11.5% | $1,160,670 -24.8% |
| 2010 | $13,261 +4.4% | $1,543,780 +1% |
| 2009 | $12,703 +3.4% | $1,528,660 |
| 2008 | $12,290 +3.6% | $1,528,660 |
| 2007 | $11,862 +3.5% | $1,528,660 |
| 2006 | $11,465 +0.9% | $1,528,660 +54.9% |
| 2005 | $11,360 +3.5% | $986,930 |
| 2004 | $10,975 +3.4% | $986,930 |
| 2003 | $10,609 +32.7% | $986,930 +130.8% |
| 2001 | $7,995 | $427,560 |
Find assessor info on the county website
Monthly payment
Est. payment
Payment breakdown
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Neighborhood: Cos Cob
Nearby schools
GreatSchools rating
- 9/10North Street SchoolGrades: PK-5Distance: 1.6 mi
- 8/10Central Middle SchoolGrades: 6-8Distance: 1.4 mi
- 10/10Greenwich High SchoolGrades: 9-12Distance: 2 mi
Schools provided by the listing agent
- Elementary: North Street
- Middle: Central
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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