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20 Castle Ct

Hillsborough, CA 94010 · Single Family Residential

$12,000,000

Activelisted Sep 2, 2026
Beds
4
Baths
3
Sq ft
2,520
Lot
21,787 ft²
Built
1956
$/ft²
$4,762
On market
16 days
MLS
ML82059857

About

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.

Timeline

  1. Sep 2, 2026Listed$12,000,000Active
5 earlier events on this home
  1. May 3, 2021Sold (Public Records)$4,100,000
  2. Dec 15, 2020Sold (Public Records)$4,100,000
  3. Dec 14, 2020Sold (MLS)$4,100,000SoldML81820541
  4. Nov 25, 2020PendingPending (Do Not Show)ML81820541
  5. Nov 17, 2020Listed$3,250,000ActiveML81820541