BG

20 Castle Court

Hillsborough, CA 94010

$12,000,000 $2,097 / sqft Est. $60,679/mo

7
Beds
7
Baths
5,722
Sq Ft

Active 8 days on market

Listed By Phil ChenDRE #01715177

Christie's International Real Estate Sereno

Your inquiry will go to Brenda Geraci, who is not the listing agent for this property.

Lot Size
21,787 sqft
Year Built
2026
Property Type
Residential
Property Subtype
Single-family home
Garage Spaces
3
View
Yes
HOA
No
Days on Market
8 days
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.

Estimate a monthly payment

/mo

Principal and interest only. Property taxes, insurance and any HOA dues are not included and will increase this amount.

Estimates only, for your own planning. Not a loan offer, a pre-qualification, or a quote from any lender.

Features

Interior Features

Interior
  • Walk In Closets
Appliances
  • Dishwasher
  • Freezer
  • Disposal
  • Refrigerator
  • Range Hood
Cooling
  • Central Air
Heating
  • Heat Pump
Flooring
  • Wood

Exterior Features

Pool
  • In Ground
View
  • Hills
  • Neighborhood
  • Water
Parking
  • Gated
Roof
  • Metal

Market insights

Computed from CRMLS data for Hillsborough.

Property history

No prior MLS sale records.

Based on information from California Regional Multiple Listing Service, Inc. as of September 20, 2026 at 8:00 PM PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Any amount of compensation or commission stated is made only to participants of CRMLS or an MLS that has entered into a datashare agreement with CRMLS.

Where it is