19 photos · MLS data verified October 9, 2026 · Updated every 15 min
$12,000,000
Active
7 Beds·7 Baths·5,722 sqft·21,787 sqft lot·Built 2026
20 Castle Ct, Hillsborough, CA 94010
Listed 37 days ago · | MLS# ML82059857
$2,097/sqft
20 Castle Ct is a 7-bedroom, 7-bath single family home in Hillsborough 94010 with 5,722 square feet of living space, built in 2026. It is listed at $12,000,000, or $2,097 per square foot. The three most recent 7-bedroom sales in 94010 closed between $7,470,000 and $10,750,000 ($984 to $2,022 per square foot).
Est. $75,027/moP&I $62,265 · Tax $12,500 · Insurance $262 · HOA $0Assumes 20% down ($2,400,000) at 6.75% · Contact Timothy for a lender referralAegis Luxury Real Estate is a licensed California real estate brokerage (DRE# 01328224) and is not a mortgage lender, mortgage broker, or loan originator. The figures shown are estimates for general reference only and do not constitute a loan offer, pre-approval, pre-qualification, or commitment to lend. Estimates use a property tax rate of 1.25% of home price annually. Actual rates, payments, taxes, and insurance vary by lender and borrower qualifications. Contact Timothy for a referral to one of our preferred lending partners.
Single Family Price Position in Hillsborough
$4.5M$12.0M
18Active in Hillsborough
19Active Single Family Homes
2.0 moInventory
Why This Home Stands Out
🏠
7 Bed / 7 Bath, 5,722 sqft
Built in 2026, attached 3-car garage.
Best fit forActive BuyersHillsborough SearchersMove-Up / Move-In
About 20 Castle Ct
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.
MLS ID #ML82059857, Phil Chen. Listing provided by Christie's International Real Estate Sereno · MLSListings Inc.
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Property Details for 20 Castle Ct
Overview
- Property Type
- Single Family Residence
- Year Built
- 2026
- Stories
- 2
- Bedrooms
- 7
- Bathrooms
- 6 Full, 1 Half
- Living Area
- 5,722 sqft
- Lot Size
- 21,787 sqft (0.50 acres)
- Price/sqft
- $2,097
- Status
- Active
Interior
- Primary Bedroom
- Walkin closet
- Kitchen
- Countertop, other, Island, Pantry
- Appliances
- Dishwasher, Freezer, Garbage disposal, Hood over range, Refrigerator, Wine refrigerator
- Fireplace
- Other
- Heating
- Heat pump
- Cooling
- Central AC
- Flooring
- Hardwood, Wood
- Laundry
- Tub sink, Inside
- Family Room
- Separate family room
- Interior Features
- High ceiling, Vaulted ceiling, Walkin closet
Exterior and Parking
- Garage
- Attached, 3 spaces
- Roof
- Metal
- Foundation
- Crawl space, Concrete perimeterand slab
- Construction
- Concrete
- Pool
- In ground, Pool spa combo
- View
- Hills, Water
- Zoning
- R10025
Community and HOA
- Utilities
- Natural gas available, Public, Water public, Solar
- County
- San Mateo
- City
- Hillsborough
Schools
- School District
- Hillsborough City Elementary
- Hillsborough Schools
- View Hillsborough schools
Listing
- MLS Number
- ML82059857
- Listed
- September 2, 2026
- Days on Market
- 37
- Listing Agent
- Phil Chen
- Listing Brokerage
- Christie's International Real Estate Sereno
- Data Verified
- October 9, 2026
Source: MLSListings Inc. School attendance boundaries are set by the district and can change; verify directly with the district.
Free from Aegis · Updated for October 2026
Three Hillsborough Reports the Listing Does Not Give You
📄Hillsborough Market ReportFree 9-page PDF with bedroom breakdowns, comp data and pricing trends, updated monthly.Email Me the Report →📋Hillsborough Buyer BriefA personalized brief with comp data, offer strategy and neighborhood context.Email Me the Report →🎯Hillsborough Offer StrategyComp analysis and bid recommendations before you write an offer on this home.Email Me the Report →
Location
20 Castle Ct, Hillsborough, CA 94010 · San Mateo County
Market Context
Price Positioning
🏠 Inventory: 14 7-bedroom homes and 19 single family homes currently active in Hillsborough.
Source: MLSListings Inc. Timothy Alston, Broker, DRE# 01328224.
Want to know what this home will actually sell for? Get a data-backed offer range based on recent comparable sales.
Get My Offer Range →Frequently Asked Questions
Listed at $12,000,000 ($2,097/sqft). The three most recent 7-bedroom sales in 94010 closed at $984 to $2,022 per sqft.
Listed September 2, 2026. That is 37 days on market as of October 9, 2026.
Est. $75,027/mo with 20% down ($2,400,000) at 6.75%. That is principal and interest $62,265, property tax $12,500 and insurance $262. The assumptions and lender disclosure are with the payment estimate at the top of this page.
There are 18 active listings in Hillsborough: 14 are 7-bedroom and 19 are single family homes.
The three most recent 7-bedroom sales in Hillsborough 94010 closed at $7,470,000, $10,500,000 and $10,750,000, or $984 to $2,022 per sqft.
Yes. As of October 9, 2026, 20 Castle Ct is an active listing at $12,000,000. It is a 7-bedroom, 7-bath single family home.
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Broker · DRE# 01328224 · Over 23 Years Experience
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For Homeowners
Your neighbors are selling. Should you?
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Buyers
See 20 Castle Ct before the weekend
Listed 37 days ago.
Questions
Talk to Timothy directly
Timothy Alston, Broker, DRE# 01328224. Over 23 years in Silicon Valley real estate.
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