20 Castle Court, Hillsborough, CA 94010

About this home

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 Thermador 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.

Property details

Property type

Single Family

Year built

2026

Lot size

21,787 sqft

Garage spaces

3

Stories

2

Pool

Yes

View

Hills,Neighborhood,Water

County

San Mateo

Listed

today

MLS #

82059857

Listed by

Phil Chen · Christie's International Real Estate Sereno

Features

• Attached Garage
• Gate / Door Opener
• Heat Pump
• Central AC
• Fireplace: Other
• Flooring: Hardwood
• Flooring: Wood
• Roof: Metal
• Construction: Concrete
• Construction: Steel
• Construction: Wood Frame
• High Ceiling
• Vaulted Ceiling
• Walk-in Closet
• Solar Power
• Utilities: Natural Gas
• Utilities: Public Utilities
• Utilities: Solar Panels - Owned
• Sewer: Sewer - Public
• Water: Public

Location

Approximate location based on the listing address.