18508 Madison AveCastro Valley, CA 94546

Single Family · 4 Beds · 2 Full Baths · 2,178 Sq. ft. | 0.30 Acres
$1,225,000 Active

18508 Madison Ave Overview

Time on Site:
34 days
Visits:
0

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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18508 Madison Ave Facts & Features

  • Type Single Family
  • Sq. ft. 2,178
  • Price/Sq.ft. $562
  • Lot 0.30 Acres

Details

General

Building Information

  • New Construction: false
  • Year Built: 1952

Location/Region

  • Country: US
  • County Or Parish: Alameda
  • Subdivision Name: CASTRO VALLEY

General Information

  • Listing Terms: Cash,Conventional,1031 Exchange
  • Parcel Number: 84C88517
  • Property Condition: Existing
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Special Listing Conditions: Standard

Interior

Parking Information

  • Garage Spaces: 2
  • Garage: true

Beds/Baths

  • Bathrooms Full: 2
  • Bathrooms Partial: 0
  • Bathrooms Total: 2
  • Bedrooms Total: 4

Building Interior

  • Building Area Source: Assessor Auto-Fill
  • Building Area Total: 2178
  • Building Area Units: Square Feet

General Information

  • Appliances: Dishwasher,Free-Standing Range
  • Basement: Crawl Space
  • Electric: No Solar
  • Fireplace Features: Family Room
  • Fireplace: true
  • Fireplaces Total: 1
  • Flooring: Hardwood,Linoleum,Carpet
  • Foundation Details: Slab
  • Interior Features: Storage,Workshop
  • Laundry Features: Laundry Room
  • Levels: One Story
  • Living Area: 2178
  • Living Area Units: Square Feet
  • Other Equipment: None
  • Rooms Total: 8
  • Stories: 1

Exterior

Parking Information

  • Parking Features: Carport - 2 Or More,Detached
  • Parking Total: 6

Lot Information

  • Lot Features: Sloped Up,Back Yard
  • Lot Size Acres: 0.3
  • Lot Size Area: 0.3
  • Lot Size Square Feet: 12962
  • Lot Size Units: Acres
  • Water Source: Public

Building Exterior/Construction

  • Architectural Style: Traditional
  • Attached Garage: false
  • Construction Materials: Siding - Stucco

General Information

  • Carport: true
  • Covered Spaces: 2
  • Exterior Features: Back Yard,Front Yard
  • Fencing: Fenced,Wood
  • Pool Features: None
  • Pool Private: false
  • Sewer: Public Sewer

18508 Madison Ave Neighborhood

Community

94546 (CASTRO VALLEY) Demographics

41
Median Age
4,630
Population Density (per sq. mile)
49%
College Educated
$101,445
Estimated Median Income
10,323
Estimated Total Home Owners
5,599
Estimated Total Renters
65% / 35%
Estimated Owner / Renter Divide
3
Estimated Average Household Size
Community data courtesy of LiveBy, Inc.

Schools

School data courtesy of LiveBy, Inc. School ratings are based on a scale of 1-5, with 5 being the highest rating and 1 being the lowest rating.

18508 Madison Ave Monthly Cost

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* All calculations are estimates and provided by Reliance Network, for informational purposes only. Actual amounts may vary. ** Assumes 6.50% APR, 20% down payment, and conventional 30-year fixed rate first mortgage. Rates cited are for instructional purposes only; current rates are subject to change at any time without notice. You should not make any decisions based simply on the information provided. Additional required amounts such as taxes, insurance, homeowner association dues, assessments, mortgage insurance premiums, flood insurance or other such required payments should also be considered. Contact your mortgage company for current rates and additional information. Any mortgage broker or insurance agent that may appear is independent and is not affiliated with, endorsed by, or provided by the MLS.

18508 Madison Ave Market Data

Based on the last 30 days in this zip code

$977,990
Average List Price
$607
Average Price per Square Foot
22
Properties Sold
70
Average Days on Market
151
Properties for Sale
Calculations provided by Reliance Network

18508 Madison Ave History

Date Event Value Agent
6/2/2026Source: bridgeMLS Status Change
Active
5/26/2026Source: bridgeMLS Added to Database
May 26, 2026
5/25/2026Source: CRMLS Added to Database
May 25, 2026
Listing provided courtesy of Compass- MLS# 41135921MLS Provider