NOT LISTED FOR SALE

21924 Ada St Castro Valley, CA 94546

South of 580 Neighborhood

Estimated Value: $901,000 - $956,000

3 Beds
2 Baths
1,530 Sq Ft
$609/Sq Ft Est. Value

Sale Details

Date Sold: April 7, 2025

Last sale price $960,000 $627 Per Sq Ft

Est. 3% decrease in value since last sale

Current estimated payment $5,634 / mo

6 Days on Market

Highlights

  • Recreation Room with Fireplace
  • No HOA
  • Eat-In Kitchen
  • Wood Flooring
  • 1 Car Attached Garage
  • Double Pane Windows

About This Home

As of April 2025

Welcome home! This beautiful mid-century home is ready for new owners. Featuring modern updates to enhance its charm, you'll enjoy an open floorplan with an abundance of natural light, hardwood flooring, stylish wood beam ceiling, classic wood burning fireplace, mature landscape and more. Previously expanded, this home has ample interior space with 3 bedrooms, 2 remodeled bathrooms, eat in kitchen, and 2 spacious living areas. Located near BART, freeways, shops, and restaurants, this home offers the perfect blend of easy living and convenience. Make your move!

Last Agent to Sell the Property

Veronica Peter

Compass License #02056842 Listed on: 03/14/2025

Compass

Last Buyer's Agent

Vivian Ho

Exp Realty Of California, Inc License #02009701

Exp Realty Of California, Inc

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

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Average Value
Not Available
List Price
Sold Price
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Home Details

Home Type

  • Single Family

Year Built

  • Built in 1948

Lot Details

  • 5,040 Sq Ft Lot
  • Rectangular Lot
  • Back and Front Yard

Parking

  • 1 Car Attached Garage
  • Garage Door Opener

Home Design

  • Bungalow
  • Shingle Roof
  • Wood Siding
  • Composition Shingle
  • Stucco

Interior Spaces

  • 1-Story Property
  • Ceiling Fan
  • Wood Burning Fireplace
  • Double Pane Windows
  • Family Room
  • Dining Area
  • Recreation Room with Fireplace

Kitchen

  • Eat-In Kitchen
  • Electric Cooktop
  • Microwave
  • Dishwasher
  • Laminate Countertops
  • Disposal

Flooring

  • Wood
  • Tile

Bedrooms and Bathrooms

  • 3 Bedrooms
  • 2 Full Bathrooms

Laundry

  • Laundry in Garage
  • Dryer
  • Washer

Home Security

  • Carbon Monoxide Detectors
  • Fire and Smoke Detector

Outdoor Features

  • Shed

Utilities

  • Cooling Available
  • Central Heating

Community Details

  • No Home Owners Association
  • Bay East Association
  • Baywood Subdivision

Listing and Financial Details

  • Assessor Parcel Number 4159085

Home Details

Home Type

Single Family

Year Built

Built in 1948

Lot Details

5,040 Sq Ft Lot

Parking

1

Listing Details

  • Stories: 1
  • Year Built: 1948
  • Property Sub Type: Single Family Residence
  • Prop. Type: Residential
  • Lot Size Acres: 0.1157
  • Subdivision Name: BAYWOOD
  • Directions: Redwood to Lessley to Ada
  • Architectural Style: Bungalow
  • Carport Y N: No
  • Garage Yn: Yes
  • Unit Levels: One Story
  • New Construction: No
  • ResoPropertyType: Residential
  • ResoBuildingAreaSource: PublicRecords
  • Special Features: None

Interior Features

  • Flooring: Hardwood, Tile
  • Appliances: Dishwasher, Electric Range, Disposal, Microwave, Refrigerator, Dryer, Washer
  • Full Bathrooms: 2
  • Total Bedrooms: 3
  • Fireplace Features: Recreation Room, Wood Burning
  • Fireplaces: 1
  • Fireplace: Yes
  • Interior Amenities: Dining Area, Family Room, Rec/Rumpus Room, Laminate Counters, Eat-in Kitchen
  • Window Features: Double Pane Windows
  • Room Kitchen Features: Counter - Laminate, Dishwasher, Eat In Kitchen, Electric Range/Cooktop, Garbage Disposal, Microwave, Refrigerator

Exterior Features

  • Roof: Shingle
  • Lot Features: Regular, Front Yard
  • Pool Features: None
  • Pool Private: No
  • Construction Type: Composition Shingles, Stucco, Wood Siding
  • Exterior Features: Backyard, Back Yard, Front Yard
  • Other Structures: Shed(s)
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 1
  • Attached Garage: Yes
  • Covered Parking Spaces: 1
  • Parking Features: Attached, Garage Door Opener
  • Total Parking Spaces: 3

Utilities

  • Heating: Central
  • Cooling: Ceiling Fan(s)
  • Laundry Features: In Garage
  • Security: Carbon Monoxide Detector(s), Double Strapped Water Heater, Smoke Detector(s)
  • Cooling Y N: Yes
  • Heating Yn: Yes
  • Electric: No Solar
  • Sewer: Public Sewer
  • Water Source: Public

Condo/Co-op/Association

  • Association Name: BAY EAST
  • Association: No

Lot Info

  • Lot Size Sq Ft: 5040
  • Parcel Number: 4159085
  • ResoLotSizeUnits: Acres

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Mar 14, 2025
Closed on
Apr 3, 2025
Sold by
Spillner Mark and Spillner Jacob C
Bought by
Seller's Agent
Veronica Peter
Compass
Buyer's Agent
Vivian Ho
Exp Realty Of California, Inc
List Price
$939,000
Sold Price
$960,000
Premium/Discount to List
$21,000
2.24%
Views
43
Current Estimated Value
$931,144

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$28,856
Avg. Annual Appreciation
-2.16%
Original Mortgage
$768,000
Outstanding Balance
$757,876
Interest Rate
6.85%
Mortgage Type
New Conventional
Estimated Equity
$173,268

Purchase Details

Closed on
Aug 29, 2018
Sold by
Spillner Robin Carroll
Bought by
Spillner Mark J

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$411,250
Interest Rate
4.5%
Mortgage Type
New Conventional

Purchase Details

Closed on
Aug 28, 2018
Sold by
Spillner Justus C and Justus C Spillner Jr Credit Tr
Bought by
Spillner Mark J and Spillner Jacob C

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$411,250
Interest Rate
4.5%
Mortgage Type
New Conventional

Purchase Details

Closed on
Jun 2, 2014
Sold by
Spillner Margaret Hayford and Spillner Justus C
Bought by
Spillner Spillner Margaret Hayford Margaret Hayford and Spillner Justus C

Purchase Details

Closed on
Jun 16, 2000
Sold by
Spillner Justus C and Spillner Margaret H
Bought by
Spillner Justus C and Spillner Margaret Hayford
Source: Public Records

Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Agents Specializing in South of 580, CA

  • Andrew Fung Real Estate Agent - Ramsell Real Estate Inc

    Andrew Fung

    Ramsell Real Estate Inc

    (925) 940-4577

    60 Total Sales

    1 in South of 580

    $1,682,000 Price

    Andrew Fung
     Section Image
  • Westin Means Real Estate Agent - eXp Realty of California

    Westin Means

    eXp Realty of California

    (510) 853-6907

    28 Total Sales

    1 in South of 580

    $824,000 Price

    Westin Means
     Section Image
  • Otto Catrina Real Estate Agent - Catrina R.E. & Investments

    Otto Catrina

    Catrina R.E. & Investments

    (628) 227-9891

    53 Total Sales

    3 in South of 580

    $734K - $950K Price Range

    Otto Catrina
     Section Image
  • Vickie Burgess Real Estate Agent - Realsmart Properties

    Vickie Burgess

    Realsmart Properties

    (650) 744-3694

    114 Total Sales

    3 in South of 580

    $1.6M - $1.7M Price Range

    Vickie Burgess
     Section Image
  • Janella Anguiano Real Estate Agent - Century 21 Masters

    Janella Anguiano

    Century 21 Masters

    (510) 674-1058

    84 Total Sales

    3 in South of 580

    $750K - $955K Price Range

    Janella Anguiano
     Section Image
  • Veronica Peter Real Estate Agent - Compass

    Veronica Peter

    Compass

    (510) 939-7811

    46 Total Sales

    1 in South of 580

    $960,000 Price

    Veronica Peter
     Section Image
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Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$960,000 Wfg National Title Insurance C
Spillner Mark J -- Chicago Title Company
Spillner Mark J $548,500 Chicago Title Company
Spillner Spillner Margaret Hayford Margaret Hayford -- None Available
Spillner Justus C -- --
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Open $768,000
Previous Owner Spillner Mark J $100,000
Previous Owner Spillner Mark J $412,000
Previous Owner Spillner Mark J $411,250
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
04/07/2025 04/07/25 Sold $960,000 +2.2% $627 / Sq Ft
03/20/2025 03/20/25 Pending -- -- --
03/14/2025 03/14/25 For Sale $939,000 -- $614 / Sq Ft
Source: Bay East Association of REALTORS®

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2026 $8,308 $979,200 $293,760 $685,440
2025 $8,103 $616,138 $187,228 $428,910
2024 $8,103 $604,058 $183,557 $420,501
2023 $7,955 $592,216 $179,959 $412,257
2022 $7,777 $580,606 $176,431 $404,175
2021 $7,694 $569,223 $172,972 $396,251
2020 $7,595 $563,389 $171,199 $392,190
2019 $7,653 $552,342 $167,842 $384,500
2018 $1,464 $62,920 $31,460 $31,460
2017 $1,425 $61,686 $30,843 $30,843
2016 $1,327 $60,476 $30,238 $30,238
2015 $1,273 $59,568 $29,784 $29,784
2014 $1,202 $58,402 $29,201 $29,201
Source: Public Records

Agents Affiliated with this Home

  • Veronica Peter Real Estate Agent - Compass

    Seller's Agent in 2025

    Veronica Peter

    Compass

    (510) 304-8710

    1 in this area

    46 Total Sales

    Veronica Peter
    Section Image
  • Vivian Ho Real Estate Agent - Exp Realty Of California, Inc

    Buyer's Agent in 2025

    Vivian Ho

    Exp Realty Of California, Inc

    (510) 882-6377

    1 in this area

    72 Total Sales

    Vivian Ho
    Section Image
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Map

Source: Bay East Association of REALTORS®

MLS Number: 41089528

Bay East Association of REALTORS®

APN: 415-0090-085-00

California Alameda County Castro Valley 94546 South of 580

21924 Ada St, Castro Valley, CA

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Bay East Association of REALTORS® Bay East ©2026. CCAR ©2026. bridgeMLS ©2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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