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Castro Valley 94546
18508 Madison Ave
$1,175,000
● House - Off Market

18508 Madison Ave

Castro Valley, CA 94546
bedrooms
4 Beds
bathrooms
2 Baths
square feet
2,178 Ft²
$5,770
Est. Monthly

About This Property

Tucked along a quiet Castro Valley street, this inviting home offers the perfect balance of timeless character, everyday comfort, and exciting potential. From the moment you arrive, there's a sense that this is a home that's been thoughtfully cared for and is ready for its next chapter.  Inside, hardwood floors add warmth throughout much of the home, while the functional four-bedroom, two-bath layout provides flexibility for growing families, remote work, or multigenerational living. Every space feels comfortable, welcoming, and filled with natural light.  The heart of the home is the expanded dining room, where walls of windows frame views of the backyard and create an airy gathering space for everything from casual breakfasts to holiday celebrations. It's a room designed for connection and one that naturally draws everyone together.  Outside, the property continues to impress with multiple outdoor spaces to relax, entertain, garden, or simply enjoy the peaceful surroundings. Above the backyard, the detached structure has been transformed into a versatile bonus room. Beneath it, a spacious workshop offers exceptional flexibility for hobbies, storage, creative studio, or the potential to explore an ADU conversion (buyer to verify).  Whether you're looking for a home to enjoy immediately or one you can thoughtfully personalize over time, this property offers the rare combination of move-in-ready comfort, versatile spaces, and the opportunity to build lasting value in a desirable Castro Valley location.
Unit Size
2,178 Ft²
Days on Market
86 days
Land Size
0.30 acres
Price per sqft
$539
Property Type
House
Property Taxes
-
HOA Dues
-
Year Built
1952

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Last updated: 2 months ago (bridgeMLS/CCAR/Bay East AOR #41135921)

Price History

Date / Event Date Event Price
Aug 20, 2026 Sold
Sold
Aug 2, 2026 In contract -
In contract
Jul 28, 2026 Relisted $1,175,000
Relisted
Jul 19, 2026 In contract -
In contract
May 26, 2026 Listed by Compass $1,225,000
Listed by Compass

Property Highlights

Garage
Fireplace

Building Info

Overview

    General

  • Year Built: 1952
  • Effective Year Built: 1952
  • Building Count: 1
  • Total Rooms: 8
  • Bedroom Count: 4
  • Bathroom Count: 2
  • Full Bathrooms: 2
  • Partial Bathrooms: 2
  • Building Condition: 0
  • Building Quality: 7
  • Construction Type: 17
  • Building Style: 58
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Count: 100
  • Living Units: 1
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 12,962
  • Total Building Area: 2,178
  • Building Area: 2,178
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heated Square Feet: 2,178
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000000298
  • Standard Land Use Code: 1001
  • County Land Use Code: 1100
  • Legal Description 1: LOT: 00007 BLK: 0001 AR: 084C PAGE: 0885

Neighborhood

  • School District Name: Castro Valley Unified School District
  • Census Tract: 430200

Geography

  • Parcel: 84C-885-1-7
  • Municipality: CASTRO VALLEY UNIFIED
  • Latitude: 37.7123
  • Longitude: -122.063

    Address

  • Full Address: 18508 Madison Ave
  • Address - House Number: 18508
  • Address - Street Name: Madison
  • Address - Suffix Type: Ave
  • State: CA
  • City Name: Castro Valley
  • Carrier Code: C030
  • 4-Digit Zip Code: 1640
  • Zip Code: 94546

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $221,308
  • Tax Rate Code Area: 54-003

    Appraisal Valuation

  • Standard Deviation: 0.2167
  • Valuation Date: Feb 14, 2024
  • Confidence Score: 70
  • Final Value: 1,250,104
  • High Value: 1,521,073
  • Low Value: 979,135

    Assessments Valuation

  • Assessed Year: 2022
  • Assessed Total Value: $122,152
  • Assessed Land Value: $47,069
  • Assessed Improvements Value: $82,083

    Exemptions

  • Homeowner Exemption: Yes
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Castro Valley


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Currently no similar homes around

Nearby Rentals

Unit for rent at 3810 Norbridge Ave, CASTRO VALLEY, CA, 94546

$4,800 /mo

  • 3 Beds
  • 3 Baths
  • 1,423 ft²
3810 Norbridge Ave, CASTRO VALLEY, CA, 94546 Listing by Winnie Kwong
Unit for rent at 3682 Seven Hills Road, CASTRO VALLEY, CA, 94546

$3,500 /mo

  • 3 Beds
  • 2 Baths
  • 1,272 ft²
3682 Seven Hills Road, CASTRO VALLEY, CA, 94546 Listing by Jacky Cai


Frequently Asked Questions

When was property at 18508 Madison Avenue built and last sold?
The property at 18508 Madison Avenue was built in 1952 and last sold on Jan 1, 1970 for $0.
How much is this home worth?
The estimated value of the home located at 18508 Madison Avenue is $1,242,620.
What are some comparable homes to 18508 Madison Avenue?
There are currently no comparable homes to 18508 Madison Avenue.