The five highest-priced home sales reported in Tri-Valley, California for the week ending October 25, 2026, came to a combined $22.696 million. All five are single-family homes in Contra Costa County, two each in Diablo and Danville and one in Alamo.
The group runs from a Spanish-style estate and a farmhouse-style home in the Diablo Country Club community to a traditional home in Alamo and two contemporary homes in Danville, one of them in a Toll Brothers community and the other an updated 1970s design.
No. 1 — $9,400,000 · 1924 Alameda Diablo, Diablo, California
A pair of gates, one opening from Alameda Diablo and the other from La Cadena, leads into the property known as Hacienda de las Palmas, which sold for $9,400,000. The Spanish-style home was built in 1950 and has since been reimagined. It is the largest home in this week’s group, with 6,992 square feet of living space, six bedrooms and eight bathrooms, and its 1.53 acres make up the biggest lot of the five. Part of that land is a separate parcel that has not been built on. Diablo Country Club is a short walk away.
The stucco home keeps its original vaulted living room ceiling with exposed wood beams, and there are fireplaces in both the living room and the family room. The kitchen has quartz counters, premium appliances and a large butler’s pantry, and there is a formal dining room, a breakfast nook and a dedicated wine room. The primary suite has its own coffee nook. A secluded office has its own full bathroom and a balcony looking out over the grounds and the hills.
Outside, tall palms rise over patios laid with Spanish ceramic tile and a broad, level lawn enclosed by mature hedges. A rectangular pool, added in 2021 and heated by gas, sits at the center of the outdoor spaces. Beside it is a 1,585-square-foot casita with a family room, a bedroom, two bathrooms and a room for changing or exercise. The property also has a remodeled barn for entertaining and a garage built for golf carts, along with an attached two-car garage. The property last sold for $3.2 million in 2006.
Mary Bonham and Erin Carrigg of The Agency were the listing agents, and Erin Carrigg also represented the buyer, so the same agent was on both sides of the week’s top sale.
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No. 2 — $4,236,000 · 1105 Danville Blvd, Alamo, California
The oldest home among the five, built in 1906, stands on 0.68 acres at 1105 Danville Boulevard in the West Side Alamo neighborhood and sold for $4,236,000. The remodeled, gated property has direct access to a trail, and its yard was designed by Peter Koenig. The grounds include a gunite pool, a heated spa and an outdoor pavilion, and the home has views of the Las Trampas foothills.
The two-story home, finished in wood and cement siding, has six bedrooms, five bathrooms and 4,266 square feet. There are three fireplaces, in the living room, the family room and the primary bedroom. The updated kitchen has a breakfast bar, a nook and a pantry, and the home also has a formal dining room and quarters suited to an au pair. A two-car garage includes a workshop. The property last sold for $920,000 in 2010.
Jeff Snell of Village Associates Real Estate was the listing agent, and Cara Gamble of The Agency represented the buyer.
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No. 3 — $3,200,000 · 1822 Alameda Diablo, Diablo, California
Set on a private cul-de-sac off Alameda Diablo, inside the Diablo Country Club community, this farmhouse-style home at 1822 Alameda Diablo sold for $3,200,000. It went under contract 15 days after it was listed. Built in 2003, the two-story home has five bedrooms, six bathrooms and 4,286 square feet on just under half an acre, with a covered porch greeting visitors.
Wide white oak floors run through the main level. The white kitchen has a center island, a window seat, a walk-in pantry and room for a table. Formal living and dining rooms sit alongside a great room with a wet bar and wine refrigerator, and four fireplaces are spread through the home. The primary suite is on the first floor. Front and back staircases lead up to the other four bedrooms, three of them with their own baths; the fifth works as a bonus room or an au pair suite. The grassy backyard has space for a pool, and the clubhouse and golf course are close enough to reach on foot or by golf cart.
M.J. St. Jean and Maggie Jones of Compass were the listing agents. Erin Carrigg of The Agency, who was also on both sides of the week’s top sale, represented the buyer.
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No. 4 — $3,110,000 · 222 Remington Loop, Danville, California
Mount Diablo is in view from the backyard of 222 Remington Loop in Danville, a contemporary home built in 1977 that sold for $3,110,000. It went under contract 16 days after it was listed. The backyard is private, with no direct view of neighboring homes, and it has a pool and spa, open areas for gatherings and a custom pavilion. With its screens down and heaters running, the pavilion becomes an outdoor room, complete with a full kitchen, a gas grill and a wood-burning fireplace that can be used for cooking.
Inside, the home has been updated with clean lines and a restrained palette. It has four bedrooms, three bathrooms and 2,823 square feet on 0.40 acres. Nearly every room shares one level, where the kitchen, dining area and family room open together and Fleetwood doors slide open to the yard. The kitchen has European-style cabinets, natural stone counters with waterfall edges, Sub-Zero refrigeration and Bosch cooking appliances, and a custom bar is built from rare hardwood and stacked stone. The primary bedroom and its bath both look out at the mountain. Just below the main living spaces, the living room sits under vaulted ceilings behind a frameless glass railing, with a stacked-stone gas fireplace. Downtown Danville is less than a mile away through the neighborhood.
Brady Hobby of Hobby Associates, Inc was the listing agent, and Cielo De Santos Cenon of Intero Real Estate Services represented the buyer.
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No. 5 — $2,750,000 · 3009 Drysdale St, Danville, California
The newest home in the group, built in 2016, is a Toll Brothers home in Ashbury at Alamo Creek, a community in Danville’s Tassajara Valley. The contemporary home at 3009 Drysdale Street sold for $2,750,000. It sits on an 8,276-square-foot corner lot, and the Alamo Creek community borders roughly 275 acres of preserved open space looking toward the hills and Mount Diablo.
The two-story home has five bedrooms, each with its own bath, six bathrooms in all and 4,466 square feet, with a bedroom suite on the main level. A 16-foot wall of retractable glass doors opens the great room, which has a gas fireplace, to a covered loggia with stone pavers. The yard has a putting green, patios, raised beds and fruit trees. The kitchen has Taj Mahal quartzite counters, an island with a breakfast bar, a Sub-Zero refrigerator and a walk-in pantry. A home theater is fitted with a projector and sound-absorbing panels, and the primary suite has a sitting room, a coffered ceiling and a large soaking tub. The home has solar panels and a three-car tandem garage. Residents can walk to the community’s clubhouse, pool, fitness center and playground. The property last sold for $1.87 million in 2017.
Joujou Chawla of Compass was the listing agent, giving Compass two of the week’s five listings, and Nida Adil of Intero Real Estate Services represented the buyer.
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RealtyWire selected these transactions from publicly reported residential sales identified for the calendar week ending Sunday, October 25, 2026. The report may exclude private, off-market, delayed or nondisclosed transactions. Prices, property details and professional representation are reported as available at publication and may be updated following confirmation from transaction participants.
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