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$12,000,000
20 Days On Site

20 Castle Court
Hillsborough, CA 94010

For Sale|Single Family Residence|Active
7
Beds
6.5
Total Baths
6
Full Baths
1
Partial Bath
5,722
SqFt
$2,097
/SqFt
2026
Built
County:
San Mateo
Listed by of Phil Chen of Christie's International Real Estate Sereno (415) 271-1920
Call Now: (831) 524-2841
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(831) 524-2841
20 Castle Court20 Castle Court20 Castle Court20 Castle Court
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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.

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Listing Snapshot
Price 
$12,000,000
Days On Site 
20 Days
Bedrooms 
7
Inside Area (SqFt) 
5,722 sqft
Total Baths 
6.5
Full Baths 
6
Partial Baths 
1
Lot Size 
0.5002 Acres
Year Built 
2026
MLS® Number 
ML82059857
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
2 weeks agoListing updated with changes from the MLS®
3 weeks agoListing first seen on site
General Features
Acres 
0.5002
Attached Garage 
Yes
Cross Street 
Remillard
Disclosures 
Natural Hazard Disclosure
Foundation 
Concrete Perimeter
Garage 
Yes
Garage Spaces 
3
Number Of Stories 
2
Parking 
AttachedGarage Door Opener
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
SqFt Total 
5722
Style 
ContemporaryModern / High Tech
Utilities 
Natural Gas Available
Water Source 
Public
Zoning 
R10025
Interior Features
Appliances 
DisposalDishwasherFreezerRefrigeratorWine RefrigeratorRange Hood
Basement 
Crawl Space
Cooling 
Central Air
Fireplace 
Yes
Fireplace Features 
Other
Flooring 
HardwoodWood
Heating 
Heat Pump
Interior 
Vaulted Ceiling(s)PantryWalk-In Closet(s)High CeilingsDouble VanityKitchen Island
Laundry Features 
Laundry RoomInsideSink
Window Features 
Skylight(s)
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Exterior Features
Construction Details 
Metal SidingFrameConcrete
Pool Features 
Pool/Spa ComboIn Ground
Roof 
Metal
View 
HillsNeighborhoodWater
Waterview 
HillsNeighborhoodWater
Windows/Doors 
Skylight(s)
Community Features
School District 
San Mateo Union High
Schools
School District
San Mateo Union High
Elementary School
West Hillsborough
Middle School
Crocker Middle
High School
Burlingame High
Listed by of Phil Chen of Christie's International Real Estate Sereno (415) 271-1920



The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListings™ MLS system. Real estate listings held by brokerage firms other than eXp Realty are marked with the Internet Data Exchange icon and detailed information about them includes the names of the listing brokers and listing agents. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2026, MLS Listings, Inc..
Last checked: 2026-09-23 04:09 AM UTC

Neighborhood & Commute
Source: Walkscore
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