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.
Listed by Jessica Nance
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License #01960286
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Compass
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925-956-9552
Last updated June 10, 2026
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Source: bridgeMLS #41135921
Listing Facts
TypeSingle-family
NeighborhoodMadison Common
Bedrooms4
Bathrooms2
Days on Prevu21
Size2,178 sqft
Price per sqft$562
Amenities
Dishwasher
Parking
Swimming Pool
Location
Mortgage Calculator
Listing History
05/26/2026
Listed by Compass
$1,225,000
Property Details for 18508 Madison Ave
Exterior
Construction
Stories: 1
Year Built: 1952
Architectural Style: Traditional
Construction Materials: Siding - Stucco
Exterior Features: Back Yard, Front Yard
Features
Fencing: Fenced, Wood
Measurements
Building Area Total: 2,178
Lot Features: Sloped Up, Back Yard
Lot Size Acres: 0.30
Lot Size Area: 0
Lot Size Square Feet: 12,962
Lot Size Units: Acres
Financial
Taxes
Parcel Number: 84C88517
Interior
Features
Appliances: Dishwasher, Free-Standing Range
Fireplace Features: Family Room
Fireplace: Yes
Fireplaces Total: 1
Flooring: Hardwood, Linoleum, Carpet
Interior Features: Storage, Workshop
Measurements
Living Area: 2,178
Living Area Units: Square Feet
Rooms
Basement: Crawl Space
Bathrooms Full: 2
Bathrooms Total Integer: 2
Bedrooms Total: 4
Rooms Total: 8
Other
Location
Subdivision Name: CASTRO VALLEY
Parking
Parking
Carport: Yes
Covered Spaces: 2
Garage Spaces: 2
Parking Features: Carport - 2 Or More, Detached
Utilities
Equipment
Cooling: No Air Conditioning
Electric: No Solar
Heating: Zoned
Has Heating: Yes
Laundry Features: Laundry Room
Sewer: Public Sewer
Water Source: Public
Frequently Asked Questions
How many bedrooms and bathrooms does this single-family home have?
There are 4 bedrooms and 2 bathrooms in this single-family home at 18508 Madison Ave.
Does this single-family home have parking?
Yes, there are 2 parking spaces available for 18508 Madison Ave.
How does 18508 Madison Ave compare to other single-family homes in Alameda County?
This single-family home is listed 4% below the average price for single-family homes in Alameda County and has been on the market for 26 less days than the typical home in this area.
What is the square footage on this single-family home?
According to the MLS, this listing is 2,178 sqft.
18508 Madison Ave is a 4-bedroom, 2-bath single-family home for sale in Castro Valley CA 94546. Available on Prevu for 21 days at $1,225,000. This residence features 2,178 square feet of living space, located in Alameda County. The median listing price for single-family homes in this area is $899,000. The home offers dishwasher, parking, and swimming pool. Explore more single-family home listings in Alameda County.
Based on information from bridgeMLS 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 Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.
Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.