At the end of a cul-de-sac off Round Hill Road in back-country Greenwich awaits 66 Sumner, a 4+ acre property with private auto-gate, tennis court, pool and a canopy of specimen trees. This Mid-Century Modern home was constructed by global architectural firm Spector Group with interiors by John Saladino, one of the world's most distinguished and respected designers. 4-bedrooms, 6.5 baths, and 5,500+ SF of open living space featuring high ceilings and floor-to-ceiling windows throughout. The property is completely fenced and surrounded by a buffer of 3+ acres of wetlands for utmost privacy. Pool bath and changing rooms. New siding and decking. Generator. Unique opportunity to reimagine an architectural masterpiece nestled in a private oasis only 45 min. from NYC.
Pending
Price cut: $355K (4/2)
$3,395,000
66 Sumner Rd, Greenwich, CT 06831
4beds
5,479sqft
Est.:
Residential, Single Family Residence
Built in 1979
4.22 Acres Lot
$-- Zestimate®
$620/sqft
$-- HOA
What's special
Tennis courtHigh ceilingsPrivate auto-gateNew siding and deckingCanopy of specimen treesFloor-to-ceiling windowsMid-century modern home
- 160 days
- on Zillow |
- 315 |
- 11 |
Zillow last checked: 7 hours ago
Listing updated: June 13, 2025 at 03:23pm
Listed by:
Amy Balducci 917-318-7841,
Compass Connecticut, LLC
Source: Greenwich MLS, Inc.,MLS#: 120871

Travel times
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 6
- Full bathrooms: 5
- 1/2 bathrooms: 1
Heating
- Forced Air, Propane
Cooling
- Central Air
Features
- Cedar Closet(s), Built-in Features
- Basement: Finished
- Number of fireplaces: 1
Interior area
- Total structure area: 5,479
- Total interior livable area: 5,479 sqft
Property
Parking
- Total spaces: 3
- Parking features: Electric Gate
- Garage spaces: 3
Features
- Has private pool: Yes
Lot
- Size: 4.22 Acres
- Features: Adjcnt Conservation, Wooded
Details
- Parcel number: 103290
- Zoning: RA-4
- Other equipment: Generator
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Post Modern
- Property subtype: Residential, Single Family Residence
Materials
- Wood Siding
- Roof: Composition
Condition
- Year built: 1979
Utilities & green energy
- Sewer: Septic Tank
- Water: Well
- Utilities for property: Propane
Community & HOA
Community
- Security: Security System
Location
- Region: Greenwich
Financial & listing details
- Price per square foot: $620/sqft
- Tax assessed value: $1,603,980
- Annual tax amount: $18,785
- Date on market: 1/16/2025
- Inclusions: Washer/Dryer, All Kitchen Applncs
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