1720 Alameda Diablo Diablo, CA 94528
1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397 Photo 1
1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397 Photo 2
1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397 Photo 3
1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397 Photo 4
1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397 Photo 5
For more information on this listing, contact us at: (925) 588-9392
Active
$6,995,000

1720 Alameda Diablo Diablo, CA 94528

Detached Property Type
7 Beds
6 Full 3 Half Baths
8,190 Sq. Ft.
1941 Year Built
Contra Costa County
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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.
MLS # 41148397
Monthly HOA N/A
On Site 6 Days
Last Updated 9/21/2026

Contact Agent

Lissette Miranda

Lissette Miranda

(925) 588-9392

Property Details

Community Information

Address 1720 Alameda Diablo, Diablo, CA 94528
Area Listing
County Contra Costa
City Diablo
Subdivision Diablo C.C.
Zip Code 94528
Condo Diablo C.C.

Architecture

Bedrooms 7
Bathrooms 6 Full / 3 Half
Year Built 1941
Stories 1
Style Traditional
Construction Materials Wood Siding
Building Area 8190
Roof Composition Shingles
Garage Yes/No Yes
Garage Spaces 4
Parking Features Attached, Garage Door Opener

Features / Amenities

Interior Features Dining Area, Family Room, Formal Dining Room, Office, Storage, Workshop, Breakfast Bar, Breakfast Nook, Pantry, Updated Kitchen, Solar Tube(s)
Appliances Dishwasher, Double Oven, Gas Range, Microwave, Oven, Range, Refrigerator, Self Cleaning Oven, Gas Water Heater
Fireplace Yes/No Yes
Fireplace Features Gas, Gas Starter, Living Room, Master Bedroom
Flooring Hardwood, Tile, Carpet
Laundry 220 Volt Outlet, Dryer, Laundry Room, Washer, Inside Room
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
Exterior Features Back Yard, Front Yard, Garden/Play, Sprinklers Automatic, Storage, Landscape Back, Landscape Front
Pool Gas Heat, In Ground, Solar Heat, Fenced, Pool/Spa Combo, Outdoor Pool
Green Energy Generation Solar
Other Structures Shed(s)
Window Skylight(s)
Cooling Yes/No Yes
Cooling Central Air, Whole House Fan
Heating Zoned, Natural Gas
Power Production Photovoltaics
Total Rooms 18

Property Features

Lot Size 62,901 Sq. Ft. / 1.44 Acres
Lot Features Level, Premium Lot
Sewer Public Sewer
Water Public
Electric Photovoltaics Seller Owned, Generator
Fencing Fenced
Directions Diablo Rd - Alameda Diablo..

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1720 Alameda Diablo Diablo, CA 94528 | MLS 41148397
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Listing provided courtesy of Margaret Combs, The Agency.
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 September 21, 2026 11:00 AM PST.