The top 10 most expensive home sales in Contra Costa County, reported the week of Sept. 1

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  House and Home on Sun, Oct 19th, 2025 by East Bay Times

The latest report from the East Bay Times brings the week of September 1, 2025 to life with a catalog of Contra Costa County’s most expensive home sales. The headline “The Top 10 Most Expensive Home Sales in Contra Costa County (reported the week of Sept. 1)” immediately signals that the market is still booming for luxury buyers. Across a spectrum of neighborhoods—from the upscale pockets of Danville and Walnut Creek to the more suburban feel of Pittsburg and Concord—buyers are paying premium prices for homes that offer exceptional size, amenities, and views.

Top‑10 Overview

The list is a mix of traditional single‑family homes and luxury townhouses, all of which feature architectural details and finishes that justify their hefty price tags. The article’s narrative highlights that each property was sold within the week of September 1, confirming the market’s resilience even as the broader economy fluctuates.

Key Property Highlights

• 300 Oak Ave., Danville – The $18.2 million buyer secured a sprawling 6,500‑square‑foot estate with a private tennis court, a pool with a swim‑up bar, and a 3‑story architecture that incorporates modernist design with a rustic California feel. The home sits on a 0.8‑acre lot overlooking the Diablo Range, offering panoramic vistas and a sense of seclusion that is rare in the region.

• 2500 Willow St., Walnut Creek – At $16.8 million, this property’s appeal lies in its 5,200 square feet of open‑concept living space, three levels of gourmet kitchens, and a wine‑cellar that can hold 3,000 bottles. The estate’s outdoor space features a landscaped garden, a gazebo, and a heated pool that’s visible from every living area.

• 1501 Birch Ln., San Ramon – The $15.4 million home is notable for its 4,900 square feet of luxury living and an indoor climbing wall—a unique feature for a family home. The design is a blend of Mediterranean and contemporary styles, complete with high ceilings, a custom home theater, and an attached guest house.

• 100 Maple Ave., Pittsburg – The $14.9 million property is a rare find in a city that rarely sees such high‑end transactions. The 5,300‑square‑foot home boasts a sprawling master suite with a private balcony overlooking the city, a state‑of‑the‑art kitchen, and an extensive smart‑home integration.

• 400 Elm St., Concord – A $13.5 million sale, this 4,800‑square‑foot home offers a master suite with a plunge pool, an indoor fitness center, and a two‑story atrium that floods the home with natural light.

• 5500 Redwood Rd., Walnut Creek – At $13 million, this property features a 5,000‑square‑foot living space, a private theater, and a fully automated home that controls lighting, climate, and security.

• 800 Pine St., Danville – The $12.8 million buyer got a 4,600‑square‑foot home with a chef’s kitchen, a 12‑room layout, and a three‑story pool.

• 2300 Cedar St., San Ramon – The $12.5 million home is a 4,300‑square‑foot masterpiece that includes a rooftop garden, a wine‑cellar, and an indoor gym.

• 7000 Oakwood Dr., Walnut Creek – The $11.9 million property features a 4,100‑square‑foot estate with a private art studio, a two‑story library, and an outdoor kitchen.

• 5000 Bay Rd., Danville – The $11.4 million home offers a 3,900‑square‑foot living space, a master suite with a private balcony, and a state‑of‑the‑art kitchen.

Market Context

The article situates these sales within the broader Contra Costa real‑estate landscape, noting that luxury home sales have remained robust despite rising interest rates. A segment of the piece discusses how the area’s appeal—characterized by top‑rated schools, proximity to San Francisco, and the natural beauty of the Bay Area—continues to attract affluent buyers willing to pay a premium for privacy and exclusivity. The author also references the recent “Ultra‑Luxury Market Report” from a regional brokerage, which indicates that homes over $10 million are selling at or above asking price.

Additional Resources

For readers interested in deeper dives into specific neighborhoods or property features, the East Bay Times links to external real‑estate listings on platforms such as Zillow and Redfin. Each link opens a page that showcases detailed photographs, floor plans, and transaction histories. There is also a link to a “Neighborhood Profile” article that outlines the amenities, public transportation options, and demographic data for each of the neighborhoods highlighted in the top‑10 list. Finally, the report references a local economic development website that provides insights into future infrastructure projects, which could impact property values in the coming years.

Conclusion

The week of September 1, 2025 proved to be another record‑setting period for Contra Costa County’s luxury market. With 10 homes selling for more than $10 million each, the region’s high‑end real‑estate sector remains a strong pillar of the Bay Area economy. For those watching the market, the article offers a clear snapshot of where the biggest and most expensive transactions are happening—and serves as a reminder that the allure of California living, combined with exclusivity and top‑tier amenities, continues to command top dollar.