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20 Castle Court, 
Hillsborough, CA 94010

$12,000,000


7

Beds


7

Baths


5,722

Sq Ft


Single Family

Active

Listed by

Phil Chen

Christie'S International Real Estate Sereno

phil@sybariterealty.com

Last updated:

September 21, 2026, 02:40 PM

MLS#

ML82059857

Source:

Bay East CCAR bridgeMLS

About This Home

20 Castle Court

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.

Home Facts

Single Family

7 Baths

7 Bedrooms

Built in 2026

Price Summary

12,000,000

$2,097 per Sq. Ft.

MLS #:

ML82059857

Last Updated:

September 21, 2026, 02:40 PM

Added:

19 day(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

7

Bathrooms

Total Bathrooms:

7

Full Bathrooms:

6

Interior

Living Area:

5,722 Sq. Ft.


Structure

Structure

Architectural Style:

Contemporary, Single Family Residence

Building Area:

5,722 Sq. Ft.

Year Built:

2026


Lot

Lot Size (Sq. Ft):

21,788


Finances & Disclosures

Finances

Price:

$12,000,000

Price per Sq. Ft:

$2,097 per Sq. Ft.

MLS Logo
Bay East 2026. CCAR 2026 bridgeMLS 2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated at September 21, 2026

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.