18127 Madison Ave
Castro Valley, CA 94546 • 9 Bed • 6 Bath • 4,930 sq.ft.

Property summary

2 Homes- Rare chance to own a large, versatile property in a premium location, surrounded by nature yet close to everything. Don’t miss this exceptional opportunity to own two spacious homes plus an attached in-law unit on a gated, .98-acre lot in one of Castro Valley’s most sought-after neighborhoods. Tucked away on a private road, this estate offers privacy, serenity and flexibility—perfect for multigenerational living, rental income, remote work, or business opportunity. Bring your vision—Both homes could benefit from updating, the potential is limitless to transform this into your dream compound or income-producing investment. Front Home has approximately 3,000 sq ft of living space ,5 bedrooms, Solar panels for energy efficiency. Spacious kitchen with granite countertops. Attached in-law unit with seperate entrance and fenced yard. Back home features approximately 1,850 sq ft, 4 bedrooms, 2 bathrooms. Spacious living, dining, and laundry room. Each home has its own gated access and driveway . Ample parking pads for RV's, boats, and multiple vehicles. Low maintenance landscaping with mature fruit trees: tangerine, lemon, pomegranate, and pomelo. Minutes from top-rated schools, Castro Village Shopping Center, CV Marketplace, BART and freeways.

Days on market: 7

Listing updated: August 28, 2025 - 12:54:08

Property details

Property ID
41108905
Size
4930 sq.ft.
Home Type
Residential
Year Built
1945
Property Size
0.9837 acre
Garage
0
Levels
1
Spa
No
Patio
Deck
Basement
No
View
No
Pool
In Ground

Listed by: Valentina Hauso DRE #02008369 925-934-2900, Keller Williams Realty - Contra Costa

Source: Contra Costa, MLS#: CCBE-CCKELW Originating MLS: CRMLS

Interior information

Rooms
Family Room
Bathrooms
6
Kitchen
Gas Water Heater
Cooling
Central Air
Heating
Forced Air
Flooring
Tile, Wood
Laundry
N/A
$2,525,000
Property price
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The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional. Based on information from California Regional Multiple Listing Service, Inc. as of 2025-09-09 22:20:37 PST and /or other sources. All data, including 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.

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