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Off Market

18508 Mountain Ln

Castro Valley CA 94552

5
2
4
2050 sq. ft.
13578 sq. ft.
Single-Family
Last sold for $2,100,000
Madeline MazzolaMadeline Mazzola, last sold this property on 19 August 2026 after 27 days on market.

Overview

This exquisitely updated five-bedroom Eichler seamlessly blends iconic mid-century architecture with refined modern design, sitting on a flat .31-acre lot. Originally designed by renowned architectural firm Jones & Emmons for Joseph Eichler, the home has been thoughtfully reimagined while preserving the clean lines, natural materials, and indoor-outdoor living that define its architectural legacy. A serene open-air atrium welcomes you into the heart of the home. The open-concept living, dining, and kitchen areas flow effortlessly together, with walls of glass and direct access to the surrounding outdoor spaces. Vaulted ceilings and beams enhance the sense of volume, while an exposed wood feature wall adds warmth and character. At the center of the home, the sleek designer kitchen features a quartz waterfall island, Carrara marble backsplash, premium stainless-steel appliances, an induction cooktop, a wine refrigerator, and generous pantry storage. The private primary wing is a tranquil retreat with direct backyard access and a spa-inspired en suite bathroom featuring a dual shower head and a double vanity. An adjacent fifth bedroom/office opens to the atrium, providing a flexible space. On the opposite side of the home, three generously sized bedrooms offer privacy and comfortable separation of space. The thoughtfully landscaped yard features redwood trees, well-landscaped grounds, and turf that create a peaceful setting. The expansive rear patio provides abundant space for outdoor dining, entertaining, and relaxation, equally suited for everyday living and special occasions. Located in Castro Valley's sought-after Greenridge neighborhood, the home offers a tranquil residential setting with convenient access to parks and trails at Greenridge Park, Cull Canyon Park, and Lake Chabot. Castro Valley BART and major commute corridors are within easy reach, providing excellent connectivity throughout the Bay Area.

Features

5 bedrooms
2 bathrooms
4 carspaces
1 garage space
2050 sq. ft. floor area
13578 sq. ft. lot size
Single-Family

Estimated Value

Based on this property and similar 5 bedroom single-family properties sold in Castro Valley over the last 12 months, the estimated median property value of 18508 Mountain Ln is $1.8m.

Median value
$1.8m
Estimated value range
$1.3m - $2.83m
Median days on market
15
Estimated value trend
-9%
decrease over the last 12 months
Average days on market is based on recent, comparable sales in Castro Valley. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 18508 Mountain Ln

2026
Sold
$2,100,000
19 Aug 2026 by Madeline Mazzola, of Compass
2018
Sold
$1,500,000
04 May 2018 by Joe Frazzano Team, of J. Rockcliff Realtors Inc Brentwood
2018
Sold
$1,500,000
04 May 2018 by Joe Frazzano, of J. Rockcliff, REALTORS?

Happy sellers in Castro Valley

~%

We have insufficient information to provide an overview of customer satisfaction for Castro Valley. Viewing the agent profiles, reviews and sales for Castro Valley can provide insights for this location.

Local market activity for 5 bedroom single-family properties in Castro Valley

In the last 12 months, 9 five-bedroom single-family properties similar to 18508 Mountain Ln, have been sold.

This represents a 45% increase in five-bedroom single-family properties sales when compared to the previous 12 months.

Nearby agents

Compare and contact these top performing agents who’ve delivered exception customer service for their clients in Castro Valley

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Larry Liu

Larry Liu is a recommended agent for Castro Valley.  They have 1 local sale and collected 1 local review across the last 12 months.

  •   5   (3 reviews)
  •  1 Review in Castro Valley
  •  1 Sale in Castro Valley
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Claudia Martinez Jensen

Sellers who recommend Claudia Martinez Jensen have praised them for being local expert, responsive, clear communication, patient, reliable, supportive, and detail-oriented

  •   5   (31 reviews)
  •  1 Review in Castro Valley
  •  1 Sale in Castro Valley
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Sebastien Colas

Sellers who recommend Sebastien Colas have praised them for being local expert, responsive, friendly, well-connected, clear communication, great negotiation, and strategic

  •   5   (48 reviews)
  •  1 Review in Castro Valley
  •  1 Sale in Castro Valley
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Rick Camacho

Rick Camacho is a recommended agent for Castro Valley.  They have collected 1 local review across the last 12 months.

  •   5   (1 review)
  •  1 Review in Castro Valley
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