1720 Alameda Diablo, Diablo, CA 94528

$6,995,000
7
BD
9
BA
8,190
SqFt

Show Photos

Verify your account to unlock exclusive photos, mortgage tools, and more.

List Price
$6,995,000
Status
ACTIVE
MLS#
41148397
Year Built
1941
Property Type
Detached
Bedrooms
7
Bathrooms
9
Full Bathrooms
6
Half Bathrooms
3
Living Area
8,190
Lot Size
62,901
Acres
1.44
County
Contra Costa
Subdivision
Diablo C.C.

Property 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.

Additional Information

Style
Traditional
Stories
1
Garage Spaces
4
Appliances
Dishwasher, Double Oven, Gas Range, Microwave, Oven, Range, Refrigerator, Self Cleaning Oven, Gas Water Heater
Exterior
Wood Siding
Fireplace
Yes
Fireplace Features
Gas, Gas Starter, Living Room, Master Bedroom, Other
Flooring
Hardwood, Tile, Carpet
Kitchen Features
Breakfast Bar, Breakfast Nook, Stone Counters, Dishwasher, Double Oven, Eat-in Kitchen, Gas Range/Cooktop, Kitchen Island, Microwave, Oven Built-in, Pantry, Range/Oven Built-in, Refrigerator, Self-Cleaning Oven, Updated Kitchen, Other
Laundry Features
220 Volt Outlet, Dryer, Laundry Room, Washer, Inside Room
Lot Description
Level, Premium Lot
Total Number of Rooms
18
Parking Features
Attached, Garage Door Opener
Pool
Yes
Pool Type
Gas Heat, In Ground, Solar Heat, Fenced, Pool/Spa Combo, Outdoor Pool
Roof
Composition Shingles
Water Sewer
Public

Mortgage Calculator

Amount of Loan
Annual Interest Rate
%
Term of Loan
Years

Does not include any taxes or fees.
Please consult a financial professional.
Calculator source: Real Geeks

Listing courtesy of Margaret Combs from The Agency. 925-876-6935

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 on: