20 Castle Court, Hillsborough, CA 94010
20 Castle Court, Hillsborough, CA 94010
20 Castle Court, Hillsborough, CA 94010
20 Castle Court, Hillsborough, CA 94010
20 Castle Court, Hillsborough, CA 94010
20 Castle Court, Hillsborough, CA 94010
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Patrick Nagel

Patrick Nagel

+1(925) 895-5324
$ 12,000,000
Est. payment | /mo

7 Beds

6.5 Baths

5,722 SqFt

Save
$ 12,000,000
Est. payment | /mo
Save

7 Beds

6.5 Baths

5,722 SqFt

Key Details

Property Type Single Family Home

Sub Type Single Family Residence

Listing Status Active

Purchase Type For Sale

Square Footage 5,722 sqft

Price per Sqft $2,097

MLS Listing ID ML82059857

Bedrooms 7

Full Baths 6

Half Baths 1

HOA Y/N No

Year Built 2026

Lot Size 0.500 Acres

Acres 0.5002

Property Sub-Type Single Family Residence

Property Description

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 Thermador 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.

Location

State CA

County San Mateo

Zoning R100

Rooms

Basement Crawl Space

Interior

Interior Features Family Room, Formal Dining Room, Pantry

Heating Heat Pump

Cooling Central Air

Flooring Hardwood, Wood

Fireplaces Type Other

Fireplace Yes

Appliance Dishwasher

Exterior

Garage Spaces 3.0

View Y/N true

View Hills, Water

Private Pool true

Building

Story 2

Sewer Public Sewer

Water Public

Architectural Style Contemporary

Level or Stories Two Story

New Construction No

Schools

School District San Mateo Union High

Others

Tax ID 030061080

Bridge MLS
© 2026 BEAR, CCAR, bridgeMLS. This information is deemed reliable but not verified or guaranteed. This information is being provided by the Bay East MLS or Contra Costa MLS or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website.
Listed by Phil Chen • Christie's International Real Estate Sereno

Nearby Locations

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Patrick Nagel
Patrick Nagel

REALTOR® Lic# 1760790

+1(925) 895-5324

1451 Leimert Blvd, Oakland, CA 94602

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20 Castle Court