20 Castle Ct, Hillsborough, CA 94010
Property image
Property image
FOR SALE
NEW CONSTRUCTION
0.5 ACRES

$12,000,000

  • 7 Beds
  • 6.5 Baths
  • 5,722 sqft (on 0.50 acres)

20 Castle Ct, Hillsborough, CA 94010

Est. Mortgage $74,758/mo*
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Home Highlights

Single-Family Home
Built in 2026
0.5 acre lot
$2,097/sqft
3 Car Garage

Local Information

  • Map ViewExplore the area around 20 Castle Ct.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

About this House

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.
Last check for updates: about 2 hours ago
Listing courtesy of Phil Chen 01715177, (415) 271-1920
Christie's International Real Estate Sereno, (650) 844-7373
Axis Elite Team 70010248, (408) 320-8584
Aspire Homes, (408) 337-6938
Source: MLSListings Inc, MLS#ML82059857
Also Listed on bridgeMLS/CCAR/Bay East AOR, MLSListings Inc.

Home Details for 20 Castle Ct

Interior Features

Interior Details
Number of Rooms: 5Types of Rooms: Bedroom, Bathroom, Dining Room, Family Room, Kitchen
Beds & Baths
Number of Bedrooms: 7Number of Bathrooms: 7Number of Bathrooms (full): 6Number of Bathrooms (half): 1
Dimensions and Layout
Living Area: 5722 Square Feet
Appliances & Utilities
Utilities: Natural Gas Available, Public Utilities, Water Public, SolarAppliances: Dishwasher, Freezer, Disposal, Range Hood, Refrigerator, Wine RefrigeratorDishwasherDisposalLaundry: Tub/Sink,InsideRefrigerator
Heating & Cooling
Heating: Heat PumpHas CoolingAir Conditioning: Central AirHeating Fuel: Heat Pump
Fireplace & Spa
Fireplace: OtherSpa: Pool/SpaCombo
Gas & Electric
Gas: NaturalGas, PublicUtilities
Windows, Doors, Floors & Walls
Flooring: Hardwood, Wood
Levels, Entrance, & Accessibility
Stories: 2Floors: Hardwood, Wood
View
View: Hills, Water

Exterior Features

Exterior Home Features
Roof: MetalOther Structures: OtherFoundation: Crawl Space, Concrete Perimeter and Slab
Parking & Garage
Number of Garage Spaces: 3Number of Covered Spaces: 3No CarportHas a GarageHas an Attached GarageParking Spaces: 3Parking: Attached,Garage Door Opener
Pool
Pool: In Ground, Pool/Spa ComboPool
Water & Sewer
Sewer: Public Sewer
Farm & Range
Not Allowed to Raise Horses

Days on Market

Days on Market: 15

Property Information

Year Built
Year Built: 2026
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family Residence, ResidentialArchitecture: Contemporary,Modern/HighTech
Building
Construction Materials: ConcreteIs a New ConstructionNot Attached Property
Property Information
Parcel Number: 030061080

Price & Status

Price
List Price: $12,000,000Price Per Sqft: $2,097

Active Status

MLS Status: Active

Location

Direction & Address
City: Hillsborough
School Information
Elementary School: WestHillsboroughElementary School District: HillsboroughCityElementaryJr High / Middle School: CrockerMiddleHigh School: BurlingameHighHigh School District: SanMateoUnionHighWalk Score: 6

Agent Information

Listing Agent
Listing ID: ML82059857

Building

Building Area
Building Area: 5722

Lot Information

Lot Area: 0.50 acres

Listing Info

Special Conditions: Standard

Offer

Listing Agreement Type: ExclusiveRightToSell

Miscellaneous

Mls Number: ML82059857Water ViewWater View: Water

Around this home

What Locals Say about Hillsborough

At least 45 Trulia users voted on each feature.

  • 91 % Say parking is easy

  • 91 % Say it's dog friendly

  • 88 % Say yards are well-kept

  • 86 % Say car is needed

  • 82 % Say there's wildlife

  • 81 % Say it's quiet

  • 80 % Say there's holiday spirit

  • 77 % Say they plan to stay for at least 5 years

  • 74 % Say people would walk alone at night

  • 54 % Say neighbors are friendly

  • 49 % Say kids play outside

  • 47 % Say there are community events

  • 33 % Say there are sidewalks

  • 28 % Say it's walkable to restaurants

  • 17 % Say it's walkable to grocery stores

  • 14 % Say streets are well-lit

Sourced by Trulia users. Learn more about our methodology.
  • Peter
    "My commute last about 20 minutes it takes about three minutes to get to the highway 15 minutes on the highway and then two minutes to my office"
    0
    Flag
  • Somesh.dash
    "Awesome. Absolutely love it and it’s not far at all. Lots of highway access that’s not too far away."
    1
    Flag
  • Allegra A.
    "Very nicely maintained, quiet neighborhood. Large spaces of land, and no retail shops. Need a car to get to any public transportation. "
    1
    Flag
  • Wendell L.
    "The K-8 schools are excellent. Great places for kids nearby. Fantastic Burlingame Public Library close by. Located between San Francisco and Silicon Valley."
    1
    Flag
  • Neil C.
    "Great neighborhood to walk dogs. Lots of quiet streets and not a lot of car traffic. Almost perfect. "
    0
    Flag
  • Neil C.
    "I’ve lived here for 26 years. We walk down to burlingame and the kids used to walk to North school and to Crocker middle school. Crime almost nonexistent and HB Police are the best. "
    1
    Flag
  • Wendell L.
    "Very few sidewalks here, and people have a tendency to drive too fast for such a residential area, but the town is beautiful and very peaceful otherwise. Lots of happy dogs here."
    0
    Flag
  • Phonenix123ak
    "Well maintained community. Town of Hillsborough is well organized with town halls meetings and community events. "
    0
    Flag
  • Neil C.
    " Lived here for 25 years. It’s safe and very pleasant. Great neighbors and schools. Weather is fantastic and it’s accessible to all restaurants, sports and cultural activities. "
    1
    Flag
  • Scott H.
    "Terrific neighborhood that is close to everything: 280, 101, Burlingame, San Mateo and even San Francisco. Great schools."
    0
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  • Patrick
    "Amazing neighbors always willing to help and great schools...very few communities left like this in the Bay Area. "
    0
    Flag
  • robkeller1
    "Nice folks. Close to 280. Flat street although hilly to get to it. My dog loves it too. Great schools also. "
    0
    Flag
  • Merrill
    "Hillsborough is amongst the safest and most beautiful areas in the entire Bay Area. The public schools are at the very top."
    0
    Flag
  • The R. G.
    "Town and Country is the essence of Hillsborough, nestled in the hills of the coastal range bordering the west side of San Mateo and 20 minutes south of San Francisco. Here you enjoy all the benefits of a luxurious, private community of country estates close to all the venues of Silicon Valley, San Francisco and the quaint downtown areas of Burlingame and San Mateo. Only 15 minutes to the ocean and maybe 10 minutes to SFO. Hillsborough is one of the top 10 prestigeous locations in California."
    0
    Flag

Market trends in Hillsborough

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
15
2MoM

Home Value

Trulia Estimate
$11.5M
Since last month
Increased$6M (+126.8%)
Since last year
Increased$7M (+150.8%)
Since last sale
Increased$7M (+150.6%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +316% in the last 10 years
MonthEstimated value
2026
September 2026$11.53M
August 2026$5.08M
July 2026$4.97M
June 2026$5.03M
May 2026$4.96M
April 2026$5.08M
March 2026$4.9M
February 2026$4.88M
January 2026$4.43M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
588 Craig Rd, Hillsborough, CA
0.05
Single-Family Home
$9,280,000
04/03/26
5
5
4,763
575 Pullman Rd, Hillsborough, CA
0.11
Single-Family Home
$8,000,000
04/08/26
5
4.5
5,048
520 Darrell Rd, Hillsborough, CA
0.37
Single-Family Home
$6,400,000
07/17/26
6
5.5
4,746
746 Jacaranda Cir, Hillsborough, CA
0.34
Single-Family Home
$5,750,000
05/15/26
6
6.5
5,080
530 Darrell Rd, Hillsborough, CA
0.36
Single-Family Home
$3,900,000
12/02/25
5
4
3,195
571 Craig Rd, Hillsborough, CA
0.10
Single-Family Home
$4,500,000
01/20/26
3
3
3,047
590 Remillard Dr, Hillsborough, CA
0.07
Single-Family Home
$5,923,125
01/30/26
3
3
2,830
530 Barbara Way, Hillsborough, CA
0.29
Single-Family Home
$7,198,000
03/06/26
4
4.5
3,552

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
585 Remillard Dr, Hillsborough, CA 94010
0.05
$6,504,600
6
4.5
4,214
Off Market
590 Remillard Dr, Hillsborough, CA 94010
0.07
$5,923,125
3
3
2,830
Recently Sold
500 Pullman Rd, Hillsborough, CA 94010
0.07
$7,827,900
5
4.5
5,370
Off Market
588 Craig Rd, Hillsborough, CA 94010
0.05
$9,280,000
5
5
4,763
Recently Sold
575 Craig Rd, Hillsborough, CA 94010
0.09
$5,690,500
4
2.5
3,500
Off Market
571 Craig Rd, Hillsborough, CA 94010
0.10
$4,500,000
3
3
3,047
Recently Sold
45 Warmwood Way, Hillsborough, CA 94010
0.16
$4,837,100
4
2.5
2,530
Off Market
575 Pullman Rd, Hillsborough, CA 94010
0.11
$8,000,000
5
4.5
5,048
Recently Sold
500 Laurent Rd, Hillsborough, CA 94010
0.14
$7,668,400
4
6
4,340
Off Market
548 Craig Rd, Hillsborough, CA 94010
0.17
$7,158,700
5
4.5
3,600
Off Market
3300 Ralston Ave, Hillsborough, CA 94010
0.18
$14,031,000
5
5.5
10,180
Off Market

Price and Tax history

DateEventPrice
Sep 2, 2026
Source: MLSListings Inc #ML82059857
Listed For Sale
$12,000,000
Apr 17, 2025
Source: N/A
Sold
$4,600,000
Aug 5, 2022
Source: Zillow Rental Network_1
ListingRemoved
Jul 25, 2022
Source: Zillow Rental Network_1 #ML81890768
PriceChange
$7,500
Price decreased by 6%
Jul 17, 2022
Source: Zillow Rental Network_1 #ML81890768
PriceChange
$8,000
Price decreased by 6%

LGBTQ Local Legal Protections

Phil Chen, Christie's International Real Estate Sereno, (650) 844-7373
Agent Phone: (415) 271-1920
Based on information from the MLSListings MLS as of 2026-09-17 14:25:23 PDT. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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Frequently asked questions about 20 Castle Ct

  • What is the estimated monthly payment for 20 Castle Ct?
    Based on a $12,000,000 list price with 20% down at today's rates, the estimated monthly payment for 20 Castle Ct in Hillsborough, CA is approximately $75,829 (about $64,554 principal & interest, $11,200 property taxes, and $75 homeowner's insurance). This is an estimate. Actual payment depends on your loan terms.
  • What do residents say about Hillsborough?
    Residents describe Hillsborough, CA as easy to park in, dog-friendly, and well-kept. Most residents say you need a car. See homes for sale in Hillsborough, CA.
  • What are the closest schools to 20 Castle Ct?
    The closest schools to 20 Castle Ct in Hillsborough, CA are Burlingame High School (rated 10/10), Crocker Middle School (rated 8/10), West Hillsborough School (Elementary, rated 9/10).
  • What is 20 Castle Ct estimated to be worth?
    Trulia's estimated value for 20 Castle Ct in Hillsborough, CA is $11,528,900.
  • Does 20 Castle Ct have air conditioning?
    Yes, 20 Castle Ct in Hillsborough, CA has air conditioning.
  • Does 20 Castle Ct have a pool?
    Yes, 20 Castle Ct in Hillsborough, CA has a pool.
20 Castle Ct, Hillsborough, CA 94010 is a 7 bedroom, 7 bathroom, 5,722 sqft single-family home built in 2026. This property is currently available for sale and was listed by MLSListings Inc on Sep 2, 2026. The MLS # for this home is MLS# ML82059857.