20 Castle Ct , Hillsborough, CA 94010
$12,000,000
Est. Payment: $65,456.37/mo
7 Bed
7 Bath
5722 Sqft
0.5 Acres
Status: Active | Days on site: 30
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ML5033630 - ML5091615,ML5103350
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House 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 ADU & pool. 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.

Highlights

Listed by Phil Chen , 415-271-1920 and Axis Elite Team , 408-320-8584 Christie's International Real Estate Sereno , (650) 844-7373. CRMLS/Multi-Regional MLS mls logo

Property Type

Residential

Lot/Acreage
0.5

Year Built

2026

County

San Mateo

Area

699 - Not Defined

School District

Other

Listing ID

ML82059857

Questions about this listing?

Contact Agent

Interior Features

Bedrooms and Bathrooms
  • ▪ Bedrooms:7
  • ▪ Bathrooms:7
  • ▪ Full Bathrooms:6
  • ▪ 1/2 Bathrooms:1
Appliances:Dishwasher, Freezer, Disposal, Refrigerator, Range Hood
Air Cond:Central Air
Fireplaces:
Floor:Wood
Other:
  • ▪ Additional:Walk-In Closet(s)
Water:Public

Exterior Features

Lot:No Land Lease
Garage Capacity:3
Zoning:R10025
Roof:Metal
Others:
  • ▪ Additional:Concrete, Steel, Has ADU
Sewer:Public Sewer
Parking Features:Gated
Principal Interest
$65,456
Taxes
$7,650

Home Price

$12,000,000

Loan Details

30 yrs
7.245%

Down Payment

20%
$2,400,000
All calculations are estimates and provided by Blueroof360. Today’s Rates provided by Blueroof360. Information and interactive calculators are made available to you only as self-help tools for your independent use and are not intended to provide investment or tax advice. We cannot and do not guarantee their applicability or accuracy in regards to your individual circumstances. All examples are hypothetical and are for illustrative purposes. We encourage you to seek personalized advice from qualified professionals regarding all personal finance issues.
Monthly Price:
$65,456.37

Principal

Taxes

Principal Taxes HOA Total
Monthly $65,456.37 $7,650.00 $0.00 $73,106.37
Yearly $785,476.43 $91,800.00 $0.00 $877,276.43
Total $23,564,292.81 $2,754,000.00 $0.00 $26,318,292.81

Today's Rates

30 Year

7.25%

20 Year

7.27%

15 Year

6.6%

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Market insight data is pulled from the same city as the listing being viewed (Hillsborough, CA).

The schools listed are within a 2-mile radius of the property; however, attendance is not guaranteed. Please contact the local school district to confirm zoning and enrollment options.

Based on information from California Regional Multiple Listing Service, Inc. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent. All properties are subject to prior sale, change or withdrawal.

IDX service by Blueroof 360

Data last updated: 2026-10-05T01:13:22.000Z

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