528 Round Hill Rd Greenwich, CT, 06830

single family home
$ 18,999,000 For Sale Active Feb 6, 2026
  • 6 beds
  • 13 baths
  • 20,697 sq ft
  • 4 acres
  • 2026 year built
  • pool house
  • 4 cars garage

About the Home

Stunning New Construction. A Grand Estate of Architectural Distinction. This Incredible new build was Conceived and Constructed without Compromise. A build of enduring significance beautifully set on 4 acres. Spanning 17,197 square feet, this residence achieves extraordinary vertical volume with 11-foot ceilings on the main level and a breathtaking two-and-a-half-story family room framed by floor-to-ceiling glass. The main level features a Chef's kitchen with an oversized 14-foot island, a glass-enclosed wine room, a stately library and a first floor guest suite. Upstairs, the private primary wing offers a dramatic atrium, vaulted ceilings, and "boutique" level his-and-hers closets. The walk-out lower level with 11 foot ceilings serves as a private resort-level retreat, featuring a glass-enclosed fitness center, a serene octagonal meditation room, and a state-of-the-art golf simulator. Outside, a 3,200-square-foot multi-level masonry terrace leads to a resort-style pool and a fully appointed pool house with a wood-burning fireplace. This estate features a black slate roof, Marvin high-performance windows, and intelligent luxury systems including a Lutron smart lighting system, a 38KW standby generator, and electric vehicle charging. This purpose built masterpiece is designed to stand apart in one of Greenwich's most prestigious settings. Completion expected spring of 2027.

Rooms & Interior

6 bedrooms beds
12 full + 1 half baths
20,697 square feet sq ft

Room Details

  • Other (Main Level)
  • Library (Main Level) Book Shelves
  • Living Room (Main Level)
  • Family Room (Main Level)
  • Media Room (Lower Level)
  • Bedroom (Upper Level) Bedroom Suite, Full Bath
  • Office (Main Level)
  • Rec/Play Room (Lower Level)
  • Primary Br Suite (Upper Level) Cathedral Ceiling, Built-Ins, Dressing Room, Full Bath, Walk-In Closet, Hardwood Floor
  • Bedroom (Main Level) Bedroom Suite, Full Bath
  • Dining Room (Main Level)
  • Eat In Kitchen (Main Level)
  • Great Room (Main Level)
  • Bedroom (Upper Level) Bedroom Suite, Full Bath
  • Bedroom (Upper Level) Bedroom Suite, Full Bath
  • Bedroom (Upper Level) Bedroom Suite, Full Bath

Home Features

Heating

  • Fireplaces: 4
  • Heating: hot air
  • Heat fuel type: propane
  • Fuel tank: in ground

Cooling

  • Central air

Interior Features

  • Audio system
  • Auto garage door opener
  • Cable - available
  • Open floor plan
  • Security system

Appliances

  • Gas cooktop
  • Gas range
  • Microwave
  • Refrigerator
  • Dishwasher
  • Washer
  • Gas dryer
  • Dryer
  • Wine chiller

Home Automation

  • Built in audio
  • Security system

Attic

  • Finished
  • Walk-up

Basement

  • Full
  • Fully finished

Laundry

  • Location: second floor
  • Upper level

Property Details

Parking

  • Garage spaces: 4
  • Attached garage

Swimming Pool

  • Heated
  • Pool house
  • In ground pool

Lot Details

  • Lot surface: 4 acres
  • Professionally landscaped

Utilities

  • Water: private well
  • Sewage: septic

Construction Details

Style
colonial

Construction year
2026

Exterior Siding
shingle, cedar

Foundation
concrete

Roof
slate


Area & Town

This home is located in Back Country neighborhood, in the town of Greenwich.

Finance & Listing Info

Status Active
Listing date February 06, 2026
List price $ 18,999,000
Current price $ 18,999,000
Tax amount $ 16,961
Tax year july 2025-june 2026
MLS ID #24150732
List Agent Kathryn Bates
List Office Compass Connecticut, LLC

528 Round Hill Road Home Photos

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