$29,900,000
Greenwich, CT 06831
MLS# 125964
6 beds | 6.1 baths | 6910 sqft
1 / 29
Property Description
An extraordinary opportunity to create a new landmark estate on Round Hill Rd's premier building site: a nearly 20-acre offering at a 560 ft elevation - one of the highest points on Round Hill with a spectacular 7,000+ sq. ft. guest house for immediate liveability during the construction phase. Potential to build notable 22,000+ sq. ft. main house with optimal south-facing orientation and Long Island Sound views from second floor on 8-acre lot and additional 12,000+ sq. ft. on 4.2 acre lot for a total of 35,000+/- sq. ft. The existing stone guest house built in 2015 was designed by acclaimed architect Christopher Pagliaro with interior design by Arthur Dunnam of Dunnam Zerbini Design and offers south-facing pool with spa, separate studio apartment for visitors, and attached 3-car garage.
Details
Maps
Location & Property Info
List Price/SqFt: 4327.06
Zoning: RA-4
Owner Financing: No
Section: North Parkway
For Rent: No
CIOA: No
# HBths: 1
# FPs: 3
General Property Info
Acres +/-: 19.69
Elementary School: Parkway
Middle School: Western
Pool: Yes
Pool Description: With Spa
Court: No
Court Description: Possible Site
Year Built: 2015
Garage #: 3
SqFt +/-: 6910
Tax & Misc Info
Assessment: 8302350
Mill Rate: 10.125
Taxes: 104770
Exterior
Stone: 1
Design
Contemporary: 1
Heat System
Hydro-Air: 1
Entry Hall Level/FP
1st: 1
Heat Fuel
Propane: 1
Entry Hall Ceilings
Barrel: 1
Entry Hall Comments
Hardwood Floor: 1
Living Room Level/FP
1st: 2
FP: 2
Living Room Ceilings
Vaulted: 1
Attic
None: 1
Lot Description
Adjcnt Conservation: 1
Parklike: 1
Roof
Slate: 1
Dining Room Level/FP
1st: 1
Dining Room Ceilings
Beamed: 1
Cooling System
Central Air: 1
Dining Room Comments
Kitchen/DR: 1
Library/Den Level/FP
1st: 1
Library/Den Ceilings
Vaulted: 1
Water Source
Well: 1
Sanitation Source
Septic Tank: 1
Library/Den Comments
Wet Bar: 1
Gas Source
Propane: 1
Family Room Level/FP
1st: 1
Documents Available
GIS Maps: 1
Plot Plan: 1
Room Sizes: 1
Septic Plan: 1
Family Room Comments
Adjacent Kitchen: 1
Powder Room Level/FP
1st: 1
Kitchen Level/FP
1st: 1
Parking Description
Attached Garage: 1
Kitchen Ceilings
Beamed: 1
Kitchen Comments
Gourmet: 1
Kitchen Island: 1
Primary Bdrm Level/FP
1st: 1
FP: 1
Primary Bdrm Ceilings
Skylight: 1
Vaulted: 1
Included
All Kitchen Applncs: 1
Call LB: 1
Washer/Dryer: 1
Primary Bdrm Comments
Primary Bedroom Suite: 1
Primary Bath Level/FP
1st: 2
Primary Bth Comments
Luxury Bath: 1
Dbl Bdrms Level/FP
1st: 1
2nd: 3
Bath Level/FP
1st: 1
2nd: 2
Laundry Level/FP
1st: 1
2nd: 1
Laundry Comments
Separate Room: 1
Other Room Comments
Exercise Room: 1
Mudroom: 1
Office Space: 1
Solarium: 1
Studio: 1
Wine Cellar: 1
Hot Water
Gas: 1
Basement Type
Partially Finished: 1
Features
Auto Garage Door: 1
Auto Gate: 1
Deck: 1
Gas Grill: 1
Generator: 1
Security System: 1
Terrace: 1
Outbuildings
Studio: 1
Excluded
Call LB: 1
Location Property Info
List Price: $29,900,000
Type: Single Family Residence
Street #: 500
Street Name: Round Hill
Street Suffix: Road
State: CT
Zip Code: 06831
County: Fairfield
Area: 3 - Greenwich
Property ID: 10-3657
# Bdrms: 6
# FBths: 6
Baths: 6.1
OfficeContract Info
Status: Active
List Date: 2026-10-01
Property Features
Entry Hall Ceilings: Barrel
Entry Hall Comments: Hardwood Floor
Living Room Ceilings: Vaulted
Dining Room Ceilings: Beamed
Dining Room Comments: Kitchen/DR
Family Room Comments: Adjacent Kitchen
Kitchen Ceilings: Beamed
Kitchen Comments: Gourmet; Kitchen Island
Primary Bdrm Ceilings: Skylight; Vaulted
Primary Bdrm Comments: Primary Bedroom Suite
Primary Bth Comments: Luxury Bath
Laundry Comments: Separate Room
Other Room Comments: Exercise Room; Mudroom; Office Space; Solarium; Studio; Wine Cellar
Design: Contemporary
Cooling System: Central Air
Heat System: Hydro-Air
Heat Fuel: Propane
Hot Water: Gas
Attic: None
Basement Type: Partially Finished
Water Source: Well
Sanitation Source: Septic Tank
Gas Source: Propane
Exterior: Stone
Parking Description: Attached Garage
Roof: Slate
Lot Description: Adjcnt Conservation; Parklike
Documents Available: GIS Maps; Plot Plan; Room Sizes; Septic Plan
Features: Auto Garage Door; Auto Gate; Deck; Gas Grill; Generator; Security System; Terrace
Outbuildings: Studio
Included: All Kitchen Applncs; Call LB; Washer/Dryer
Excluded: Call LB
Supplements
Additional buffer lot of 2.3 conservation acres. DISCLAIMER: Photos labeled CONCEPTUAL RENDERING are for illustrative purposes only. Home design shown is not an approved or proposed architectural plan and is intended solely to illustrate the potential use of the property. Buyer to verify all zoning, building, and site requirements.
Listing Office: Sotheby's International Realty
Last Updated: October - 07 - 2026
Listing information comes from various sources and may not always be accurate. No representation or warranty is made as to the accuracy of this information. You should verify any information that is important to your buying decision. Greenwich Multiple Listing Service, Inc.