34,000 Sq. Ft. Andrew Carnegie’s Daughter’s Estate in Millbrook, NY ($14,000,000)

ByJon Dykstra Luxury Homes

Aerial view of the 34,000 Sq. Ft. Andrew Carnegie’s Daughter's Estate in Millbrook, NY.

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Specifications:

  • City: Millbrook, NY
  • Price: $14,000,000
  • Bedrooms: 10
  • Baths: 17
  • Sq. Ft.: 34,000
  • Property: 68.34 acres
  • Year built: 1927
  • Additional Features: An indoor edgeless pool with a hot tub, a 5,000- bottle wine cellar, and a media room, just to name a few. The expansive 50-acre grounds have a tennis court with a cabana, a playground, and multiple ponds on the main property.

Source: Top Ten Real Estate Deals 

In order to come up with the very specific design ideas, we create most designs with the assistance of state-of-the-art AI interior design software.

Photos:

Aerial view of the mansion.
Aerial view
Distant view of the mansion with a large lawn.
Distant view
Driveway with plants and trees.
Driveway
Front entry of the property with spacious driveway.
Front entry
Front view of the mansion with mountains in the background.
Front view
Aerial view of the property.
Aerial view
Foyer with a chandelier and stairs.
Foyer
Living room with couches, tables, piano and a fireplace.
Living room
Living room with couches, tables, piano and a fireplace.
Living room
Kitchen with a large island, stainless-steel appliances, and custom cabinetry.
Kitchen
Kitchen with a large island, stainless-steel appliances, and custom cabinetry.
Kitchen
Dining room with a chandelier, a large wooden table, chairs and glass windows.
Dining room
Breakfast nook with a chandelier, a round wooden table, chairs and a fireplace.
Breakfast nook

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Bedroom with a large bed and a fireplace.
Bedroom
Home office with carpet flooring and a fireplace.
Home office
Home theater
Home theater
Golf simulator room
Golf simulator room
Wine cellar
Wine cellar
Indoor pool with lounge chairs.
Indoor pool
Tennis court surrounded by trees.
Tennis court
Distant view of the mansion with a large green lawn.
Distant view
Distant view of the mansion with a large green lawn.
Distant view
Pond
Pond
Aerial view of the mansion with a large green lawn.
Aerial view

Source: Top Ten Real Estate Deals 

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Jon Dykstra
Jon Dykstra

Jon practiced law before launching his online publishing career, bringing analytical rigor to everything he builds. Home Stratosphere combines that precision with a lifelong obsession with residential design — architecture, interiors, landscape, and furniture.

His current focus is AI-driven design analysis, using artificial intelligence to study patterns in color, layout, and material choice across thousands of homes. His Personality Type Home Design Guide applies personality frameworks to interior aesthetics, helping readers design spaces that reflect how they actually think and live.

His favorite piece on the site is the 25 Most Popular Designs, is a daily-updated ranking of the top designs over the last 30 days, driven entirely by visitor activity. The feedback is invaluable for understanding what resonates most with readers. LinkedIn

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