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Diablo, CA

$9,750,000

1924 Alameda Diablo, Diablo, CA
6
Beds
8
Baths
6,992
Sq Ft
1950
Built
31
Days listed

About this home

Welcome to Hacienda de las Palmas… Behind double gates with access from both Alameda Diablo and La Cadena, this exceptional Spanish-style Hacienda blends timeless character with modern sophistication. Originally built in 1949 and thoughtfully renovated, the estate honors its rich architectural heritage while offering every comfort for today's lifestyle. Set on 1.53 gated acres spanning two parcels, the property encompasses approximately 6,992 square feet across the main residence, an impressive poolside casita, and finished barn. A rare opportunity awaits on the included .77-acre unimproved homesite, offering endless building possibilities or equestrian use. Inside, an original vaulted wood-beam living room ceiling, handcrafted details, and sun-filled living spaces create a warm and inviting atmosphere. The predominantly single-level floor plan features six bedrooms, six bathrooms, and two half baths. Designed for both everyday living and gracious entertaining, the chef’s kitchen is appointed with premium appliances, quartz countertops, and a spacious butler’s pantry. A dedicated wine room, beautifully updated bathrooms, and thoughtfully curated finishes throughout reflect the home's commitment to quality and authenticity. The luxurious primary suite with adjoining coffee nook serves as a private sanctuary. The home's only second-floor space is a secluded office retreat, including a full bathroom, and balcony overlooking the estate grounds and surrounding hills. Step outside and the grounds become the showpiece. Towering palm trees, Spanish ceramic tiled patios, and a level, expansive lawn create a magical backdrop, framed by mature privacy hedging and lush plantings throughout. A sparkling rectangular pool built in 2021 anchors the outdoor entertaining areas, complemented by a sprawling 1585 sf poolside casita with family room, changing/exercise room, two bathrooms, and bedroom. A remodeled entertaining barn and a golf cart garage add even more flexibility for hosting and hobbies, while the rolling hills beyond provide a constant, picturesque backdrop. Perfectly positioned along prestigious Alameda Diablo, and a short stroll to Diablo Country Club, this extraordinary estate offers a rare combination of history, privacy, flexibility, and luxury in one of the East Bay’s most coveted settings.

Facts & features

Interior
Bedrooms
6
Bathrooms
6 full, 2 half
Living area
6,992 sq ft
Interior features
Breakfast Area, Eat In Kitchen
Flooring
Carpet, Stone, Wood
Fireplace
Family Room, Living Room
Heating
Forced Air
Cooling
Central Air
Levels
One
Exterior & lot
Lot size
1.53 acres (66,647 sq ft)
Pool
Gas Heat, In Ground, Pool Cover
Architectural style
Spanish
Year built
1950
Parking
Garage, Golf Cart Garage, Garage Door Opener
Parking spaces
3
Community
County
Contra Costa
Listing details
Status
Active
Property type
Single Family Residence
Days on market
31
Listed
2026-06-24
Terms
Cash, Conventional
Parcel #
1952600029
MLS #
41139490
Listed by
Mary Bonham · The Agency

Location

Price history

Listed
$9,750,000 · 2026-06-24
Days on market
31
Current price
$9,750,000
Financing

Could this home be yours?

Estimated monthly payment
$61,164
$49,301 principal & interest · $11,863 taxes & insurance
$1,950,000
Estimate only
Loan $7,800,000

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Estimated value range nearby
$7,888,297$9,260,175

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Listing data provided by CRMLS

Listing courtesy of The Agency. © 2026. The multiple listing data appearing on this website is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for the consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the consumer may be interested in purchasing. All data, including but not limited to 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. The listing broker's offer of compensation is made only to participants of the MLS where the listing is filed. Last updated July 26, 2026 Equal Housing Opportunity.

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