20 Castle, Hillsborough CA 94010 for sale - Presented to you by Terrence Griffin of San Diego California
Listing provided courtesy of Phil Chen of Christie's International Real Estate Sereno. Last updated 2026-09-11 08:13:50.000000. Listing information © 2026 Sandicor.

Asking Price: $12,000,000 | ​​​​​​​

20 Castle, Hillsborough CA 94010

Community: ​699 - Not Defined


This Single Family Residence property was built in 2026 and is priced at $12,000,000. Please see the additional details below.
  • 5,722 Sq Ft
  • 7 bathrooms
  • 7 bedrooms
  • MLS#: ML82059857
  • Type: Single Family Residence
  • Year Built: 2026
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.

Call or Email Terrence Griffin now to inquire about this property

619-952-0152