Unique Opportunity to own two spacious homes plus an attached In-Law Unit on nearly a one acre lot in one of Castro Valley’s most coveted neighborhoods. Discover a truly unique property tucked away on a private road on a generous .98-acre lot. This exceptional estate is perfect for fabulous living, multigenerational living, producing income, flexible work-from-home setups and other opportunities. Gorgeous front home has 5 bedrooms with just over 3,000 sq ft of light-filled living space and solar panels. Spacious kitchen featuring granite countertops. Expansive patio area ideal for outdoor entertaining. Attached ADU has its own seperate entrance and fenced in yard. Parking pad that can accommodate RV, boat, and multiple vehicles.The back home has 4 bedrooms, 2 bathrooms, dining room, living room ,laundry room and approximately 1850 sq. ft. of living space. The home has so much to offer. Surrounded by mature fruit trees-tangerine, lemon, pomegranate, and pomelo. Enjoy serene privacy behind gated access, while still being just minutes from top-rated schools ,Castro Village Shopping Center ,CV Marketplace & CV BART station. Easy access to freeway .This property offers incredible flexibility, natural beauty, and an unbeatable location. Schedule your private showing today!
For sale
$2,875,000
18127 Madison Ave, Castro Valley, CA 94546
9beds
4,930sqft
Est.:
Residential, Single Family Residence
Built in 1945
0.98 Acres Lot
$2,754,000 Zestimate®
$583/sqft
$-- HOA
What's special
- 68 days
- on Zillow |
- 1,693 |
- 50 |
Zillow last checked: 7 hours ago
Listing updated: June 17, 2025 at 01:32am
Listed by:
Valentina Hauso DRE #02008369 510-584-1333,
Keller Williams Realty
Source: CCAR,MLS#: 41100873

Travel times
Tour with a buyer's agent
Tour with a buyer's agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 9
- Bathrooms: 6
- Full bathrooms: 5
- Partial bathrooms: 1
Rooms
- Room types: 6+ Bedrooms, 3.5 Baths
Kitchen
- Features: Stone Counters, Dishwasher, Double Oven, Eat-in Kitchen, Electric Range/Cooktop, Disposal, Range/Oven Built-in, Range/Oven Free Standing
Heating
- Gravity
Cooling
- Ceiling Fan(s)
Appliances
- Included: Dishwasher, Double Oven, Electric Range, Range, Free-Standing Range
- Laundry: Laundry Room, See Remarks
Features
- In-Law Floorplan, Storage
- Flooring: Hardwood, Laminate, Tile
- Windows: Double Pane Windows, Screens
- Number of fireplaces: 3
- Fireplace features: Family Room, Living Room
Interior area
- Total structure area: 4,930
- Total interior livable area: 4,930 sqft
Property
Parking
- Parking features: Parking Spaces
Features
- Levels: One
- Stories: 1
- Exterior features: Garden/Play, Entry Gate
- Has private pool: Yes
- Pool features: In Ground, Outdoor Pool
- Fencing: Fenced
Lot
- Size: 0.98 Acres
- Features: 2 Houses / 1 Lot, Back Yard, Front Yard, Side Yard
Details
- Parcel number: 84C92017
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary,Ranch
- Property subtype: Residential, Single Family Residence
- Attached to another structure: Yes
Materials
- Stucco, Wood Siding
- Roof: Composition,Tile
Condition
- Existing
- New construction: No
- Year built: 1945
Details
- Builder name: contemporary
Utilities & green energy
- Electric: Other Solar
- Sewer: Public Sewer
Green energy
- Energy generation: Solar
Community & HOA
Community
- Subdivision: Castro Valley
HOA
- Has HOA: No
Location
- Region: Castro Valley
Financial & listing details
- Price per square foot: $583/sqft
- Tax assessed value: $1,267,210
- Annual tax amount: $16,403
- Date on market: 6/10/2025
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