18508 Madison Ave Castro Valley, CA $ 1,225,000
18508 Madison Ave
$ 1,225,000
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Open House 5/31 1pm - 4pm
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18508 Madison Ave

Castro Valley, CA, 94546
$ 1,225,000
Bedrooms4 Baths2.0 Sq 2,178

Monthly Estimate*

$ 7,543

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Single Family Home for sale in Castro Valley, CA

for $1,225,000 with 4 bedrooms and 2 full baths. This 2,178 square foot home was built in 1952 on a lot size of 0.3.

Tucked quietly along a peaceful Castro Valley street, this home is the kind of opportunity buyers are always hoping to find; a property that feels warm and welcoming from the moment you arrive, with room to enjoy today and endless potential for what it could become over time. Inside, original hardwood floors run throughout much of the home, while the comfortable 4-bedroom, 2-bath layout offers a sense of space that feels both functional and inviting. Every room reflects years of thoughtful care, creating a home that feels solid, lived in, and ready for its next chapter. At the heart of the home, an expanded dining room surrounded by walls of windows brings in natural light from every angle. It’s the kind of space that naturally becomes the gathering place of the home; morning coffee overlooking the yard, holiday dinners with family, or slow evenings spent lingering around the table with friends. Step outside and the possibilities continue. The backyard offers multiple spaces to relax, garden, entertain, or simply enjoy the privacy and peaceful setting. Perched above the home, a detached garage has been converted into a bonus space complete with its own deck overlooking the property below. Beneath it, an expansive workshop creates even more flexibility; ideal for storage, hobbies, a home gym, creative studio, or future ADU potential for buyers looking to maximize the property over time. This is the kind of home that sparks ideas the moment you walk through the door. Move right in and enjoy its charm exactly as it is, or slowly transform it into something truly special while building long-term value along the way.

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Open House

5/31/2026 1:00 PM - 4:00 PM
18508 Madison Ave Castro Valley, CA
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm

Single Family Active

Price

$ 1,225,000

Bedrooms

4

Full Bath

2

Property Type

Single Family

Taxes

$ 0

Style

Traditional

Lot Size

0.3

Year Built

1952

Town/City

Castro Valley

County/Region

Alameda

MLS | Web ID

41135921

Features
General
Living Area 2178
Sewer Public Sewer
Heating Zoned
Cooling No Air Conditioning
Roof Shingle
Appliances Dishwasher Free-Standing Range
Garage Spaces 2
Architectural Style Traditional
Pool Features None
Construction Materials Siding - Stucco
Year Built 1952
Electric No Solar
Stories Count 1
Levels One Story
Property Subtype Detached
County Alameda
New Construction false
Property Type Residential
HOA false
Subdivision Name Castro Valley
Garage Y/N true
Total Rooms 8
Full Baths 2
Status New
Directions Address hard to locate; at the corner of Seaview Ave & Common Road; follow directional
City Castro Valley
MLS Area Listing
Lot Size Square Feet 12962
Property Condition Existing
Virtual Tour http://www.18508madison.com/mls/247559331
Standard Status Active
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Interior
Interior Amenities Storage Workshop
Flooring Hardwood Linoleum Carpet
Total Fireplaces 1
Fireplace Features Family Room
Air Conditioning Y/N true
Heating Y/N true
Fireplace Y/N true
Laundry Features Laundry Room
Total Bedrooms 4
Kitchen Features Tile Counters Dishwasher Range/Oven Free Standing
Total Baths 2
1/2 Baths 0
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Exterior
Exterior Amenities Back Yard Front Yard
Fencing Fenced Wood
Parking Features Carport - 2 Or More Detached
Lot Features Sloped Up Back Yard
Water Source Public
Lot Size Area 13068
Foundation Details Slab
Building Area Total 2178
Lot Size Acres 0.3
Other Equipment None
ADU Y/N false
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* Excluded Features
List By
Jessica Nance

Listing Agent

Compass

Broker

jessica.nance@compass.com

Email

Affordability Calculator

$7,543
Per Month
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Monthly Principal & Interest
$7,543
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Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4827338 Elementary School
0 Middle School
Unknown High School High School
Pricing History
DatePricePrice ChangeDescription
5/26/2026$1,225,000 Listed Price

Map


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18508 Madison Ave, Castro Valley, CA, 94546 is a Single Family Home for sale at $1,225,000 with 2,178 sqft and a lot size of 0.3. 18508 Madison Ave has 4 bedrooms, 2.0 baths, and was built in 1952. The property's zip code is 94546 which is in Castro Valley, CA