Skip to content

1720 Alameda DiabloDiablo, CA 94528

DIABLO C.C. · Contra Costa County

$6,995,000List price
7Beds
6Baths
8,190Sq Ft
1941Year built
1.44Acre lot
4Garage
2 days agoOn market

Description

THE WHITE CASTLE | A RARE DIABLO LEGACY ESTATE An exceptional offering rarely seen in Diablo. Positioned on one of the community’s most coveted streets near the prestigious Diablo Country Club entrance, “The White Castle” occupies 1.44 acres of nearly flat, park-like grounds wrapped in privacy and timeless grandeur. This extraordinary 8,190 SF estate has been thoughtfully reimagined by Jacobs & Co. and Badger Construction, blending architectural scale with highly curated design and modern livability. The predominantly single-level floor plan unfolds across two private wings, offering seven bedrooms—including five en-suites—and an exceptional environment for sophisticated entertaining and multigenerational living. Highlights include a dramatic expanded entry, expansive great room, formal dining, elegant bar lounge, curated wine room, prep kitchen, redesigned mud room, tech center and two laundry rooms. The primary suite has been elevated with a newly designed bath and expanded closets. Beyond the interiors, the estate delivers a true private resort experience with a pool, spa, outdoor fireplace seating, manicured grounds, new sod, substantial storage structures and a charming children’s playhouse. A four-car garage caters beautifully to automotive enthusiasts. Owned solar serves both the home and pool, complemented by a whole-house generator.

Property Information

Property type
Residential
Sub-type
Single Family Residence
Style
Traditional
Year built
1941
Living area
8,190 Sq Ft
Lot size
1.44 acres
Garage spaces
4
Days on market
2
MLS® Listing#
41148397

Property Features

Interior
Walk-In Closet(s) · Breakfast Bar · Kitchen Island · Pantry · Storage · Solar Tube(s) · Master Downstairs
Exterior
Storage
Appliances
Oven · Dryer · Dishwasher · Double Oven · Microwave · Range · Refrigerator · Gas Range · Self Cleaning Oven · Gas Water Heater
Cooling
Central Air · Whole House Fan
Heating
Zoned · Natural Gas
Flooring
Hardwood · Tile · Carpet
Fireplace
Gas · Gas Starter · Living Room · Master Bedroom · Other
Pool
Gas Heat · In Ground · Solar Heat · Fenced · Pool/Spa Combo · Outdoor Pool · Private
Parking
Attached · Garage Door Opener · Garage
Laundry
Laundry Room
Fencing
Fenced
Lot features
Level · Landscaped
Construction
Wood Siding
Roof
Shingle
Windows
Skylight(s)
Security
Security Gate · Security System Owned · Prewired · Smoke Detector(s) · Closed Circuit Camera(s)
Other structures
Workshop · Shed(s)
Sewer
Public Sewer
Water source
Public

Financial Details

HOA
None
Parcel number
1951520038

Open Houses

Bridge MLS logo

Listing Courtesy: The Agency - 9255758000

Presented by: Margaret Combs

Bay East ©2026. CCAR ©2026. bridgeMLS ©2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated at 2026-09-16T00:00:00.000Z.
IDX information is provided exclusively for consumers’ personal, non-commercial use and that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information deemed reliable but not guaranteed to be accurate. Listing information updated daily.

Diablo Market Statistics

How this home compares to 16 active listings in Diablo, CA

Diablo medianThis listing
Median listing price$1,000,000+$6,995,000
Median days on market262
Median Sq Ft5,0848,190
Median price / Sq Ft$968$854

Market statistics compiled from active EXIT Realty® and MLS listings in Diablo, CA.

Commute Calculator

Explore commute times from 1720 Alameda Diablo, Diablo, CA 94528.

Travel mode

  • $6,980,000

    Similar

    6 bd, 6 ba, 8,254 Sq Ft

    700 Clipper HillDanville, CA 94526#41117462

    ActiveSingle Family Residence10 months40 photos

    Listing courtesy of PMZ Real Estate

  • $18,500,000

    Nearby0.2 mi

    5 bd, 9 ba, 8,956 Sq Ft

    1817 Calle ArroyoDiablo, CA 94528#41127983

    ActiveSingle Family Residence6 months41 photos

  • $3,298,000

    Nearby0.2 mi

    5 bd, 6 ba, 4,286 Sq Ft

    1822 Alameda DiabloDiablo, CA 94528#41147577

    ActiveSingle Family Residence9 days44 photos

    Listing courtesy of Compass

  • $2,300,000

    Nearby0.3 mi

    5 bd, 3 ba, 3,688 Sq Ft

    1857 El NidoDiablo, CA 94528#41147946

    PendingSingle Family Residence18 photos

    Listing courtesy of Compass

  • $1,400,000

    Nearby0.4 mi

    3 bd, 3 ba, 2,499 Sq Ft

    1675 El Nido Unit DDiablo, CA 94528#41148368

    ActiveCondominium3 days6 photos

Similar Home Values

Comparable nearby listings and their asking prices.

AddressPriceBedsBathsSq Ft
700 Clipper Hill, Danville, CA$6,980,000668,254

Connect with a Local Real Estate Expert

  • Albert Sanchez

    Sales Representative

    EXIT Realty Consultants (Modesto North)

  • Jerri Matoza

    Sales Representative

    EXIT Realty Consultants (Modesto North)

  • Karla Coronado

    Sales Representative

    EXIT Realty Consultants (Modesto North)

  • John Hertle

    Associate Broker

    EXIT Realty Consultants (Modesto North)

  • Kris Klair

    Broker of Record

    EXIT Realty Consultants (Modesto North)

Based on information from California Regional Multiple Listing Service, Inc. as of and/or other sources. 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.

Licensed in the state of California.