20 Castle Court, Hillsborough, CA 94010

$12,000,000
7
BD
6.5
BA
5,722
SqFt

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List Price
$12,000,000
Status
ACTIVE
MLS#
ML82059857
Days on Market
13
Property Type
Single Family Residence
Bedrooms
7
Bathrooms
6.5
Half-baths
1
Living Area
5,722
Lot Size
21,787

Property Description

Offered as a rare presale opportunity with the ability to personalize select finishes, this modern architectural masterpiece is estimated for completion in Q3 2027. Privately situated on a level half-acre cul-de-sac lot, the residence offers approximately 5,722 square feet of refined living space, including an attached JADU and detached ADU . A dramatic double-height foyer with a full-height porcelain slab feature wall and statement chandelier creates a striking first impression. Soaring ceilings, premium engineered oak flooring, a dramatic floating staircase, and walls of glass create a striking sense of scale and effortless indoor-outdoor living. The showpiece kitchen features custom European-inspired cabinetry with warm natural wood finishes, natural quartzite surfaces, a waterfall island, and premium Miele appliances. A private balcony, spa-inspired primary bath, custom wine display, Control4 automation, and beautifully landscaped grounds complete the residence. Buy early for preferred pricing and design personalization.

Additional Information

Stories
Two Story
Year Built
2026
Acres
0.50
School District
San Mateo Union High
Views
Hills, Water
Flooring
Hardwood, Wood
Kitchen Features
Dishwasher, Disposal, Kitchen Island, Pantry
Fireplace Description
Other
Garage Description
Attached
Garage Spaces
3
Basement
Crawl Space
Cooling
Central Air
Heating
Heat Pump
Parking Description
Attached

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Calculator source: Real Geeks

Listing courtesy of Phil Chen from Christie's International Real Estate Sereno

© 2026 BEAR, CCAR, bridgeMLS. This information is deemed reliable but not verified or guaranteed. This information is being provided by the Bay East MLS or Contra Costa MLS or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. Date and time last updated: Website provided by: Real Geeks LLC