NOT LISTED FOR SALE

4247 Gem Ave Castro Valley, CA 94546

Castro Valley East Neighborhood

Estimated Value: $741,000 - $856,245

3 Beds
1 Bath
1,080 Sq Ft
$727/Sq Ft Est. Value

Sale Details

Date Sold: July 29, 2025

Last sale price $755,000 $699 Per Sq Ft

Est. 4% increase in value since last sale

Current estimated payment $4,557 / mo

7 Days on Market

Highlights

  • No HOA
  • 1 Car Attached Garage
  • Carpet
  • Marshall Elementary School Rated A
  • Wood Siding
  • Heating Available

About This Home

As of July 2025

Bring your tools and imagination to this true fixer with endless potential. Featuring 3 bedrooms and 1 bathroom, this home is centrally located near BART, local parks, and highly-rated schools including Marshall Elementary and Creekside Middle. Whether you're an investor or a buyer looking to create your dream home, this property offers a rare chance to build equity in a prime location. Don’t miss out on this incredible opportunity!

Last Agent to Sell the Property

Leslie Peterson

License #01452724 Listed on: 07/04/2025

Last Buyer's Agent

Kristen Bleth

Evolve Real Estate License #02058725

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 1947

Lot Details

  • 5,775 Sq Ft Lot
  • Back Yard

Parking

  • 1 Car Attached Garage

Home Design

  • Composition Shingle Roof
  • Wood Siding

Interior Spaces

  • 1-Story Property
  • Living Room with Fireplace
  • Carpet

Bedrooms and Bathrooms

  • 3 Bedrooms
  • 1 Full Bathroom

Utilities

  • No Cooling
  • Heating Available

Community Details

  • No Home Owners Association
  • Castro Valley Subdivision

Listing and Financial Details

  • Assessor Parcel Number 84C66953

Home Details

Home Type

Single Family

Year Built

Built in 1947

Lot Details

5,775 Sq Ft Lot

Parking

1

Listing Details

  • Stories: 1
  • Year Built: 1947
  • Property Sub Type: Detached
  • Prop. Type: Residential
  • Subdivision Name: Castro Valley
  • Directions: Center-Gem
  • Garage Yn: Yes
  • Unit Levels: One Story
  • New Construction: No
  • Special Features: None

Interior Features

  • Flooring: Carpet, Other
  • Other Equipment: None
  • Full Bathrooms: 1
  • Total Bedrooms: 3
  • Fireplace Features: Living Room
  • Fireplaces: 1
  • Fireplace: Yes
  • Room Kitchen Features: Other

Exterior Features

  • Roof: Composition Shingles
  • Lot Features: Level, Back Yard
  • Pool Features: None
  • Pool Private: No
  • Construction Type: Wood Siding
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 1
  • Parking Features: Attached

Utilities

  • Heating: Other
  • Cooling: None
  • Laundry Features: Other
  • Cooling Y N: No
  • Heating Yn: Yes
  • Electric: No Solar
  • Water Source: Public

Condo/Co-op/Association

  • Association: No

Lot Info

  • Lot Size Sq Ft: 5775
  • Parcel Number: 84C66953

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
Jul 4, 2025
Closed on
Jul 23, 2025
Sold by
George Ostergard Living Trust and Huckabay Justin
Bought by
Seller's Agent
Leslie Peterson
Buyer's Agent
Kristen Bleth
Evolve Real Estate
List Price
$649,000
Sold Price
$755,000
Premium/Discount to List
$106,000
16.33%
Views
83
Current Estimated Value
$784,811

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$29,811
Avg. Annual Appreciation
3.69%
Original Mortgage
$984,400
Outstanding Balance
$974,974
Interest Rate
6.84%
Mortgage Type
New Conventional
Estimated Equity
-$190,163

Purchase Details

Closed on
Oct 19, 2010
Sold by
Ostergard George D
Bought by
Ostergard George D and The George Ostergard Living Tr
Source: Public Records

Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Agents Specializing in Castro Valley East, CA

  • Betty Moore Real Estate Agent - REALTY WORLD- COLISEUM RLTY

    Betty Moore

    REALTY WORLD- COLISEUM RLTY

    (510) 319-0329

    8 Total Sales

    1 in Castro Valley East

    $1,200,000 Price

    Betty Moore
     Section Image
  • Dave Debus Real Estate Agent - Vintage Real Estate

    Dave Debus

    Vintage Real Estate

    (925) 281-4767

    44 Total Sales

    1 in Castro Valley East

    $1,088,000 Price

    Dave Debus
     Section Image
  • Sue Fredrickson Real Estate Agent - Elation Real Estate

    Sue Fredrickson

    Elation Real Estate

    (510) 880-4286

    26 Total Sales

    6 in Castro Valley East

    $93K - $1.2M Price Range

    Sue Fredrickson
     Section Image
  • Rebecca Rook Real Estate Agent - Compass

    Rebecca Rook

    Compass

    (925) 396-5420

    37 Total Sales

    1 in Castro Valley East

    $875,000 Price

    Rebecca Rook
     Section Image
  • Yolanda Zhang Real Estate Agent - Keller Williams Thrive

    Yolanda Zhang

    Keller Williams Thrive

    (669) 260-5603

    40 Total Sales

    2 in Castro Valley East

    $870K - $940K Price Range

    Yolanda Zhang
     Section Image
  • David Earley Real Estate Agent - Compass

    David Earley

    Compass

    (510) 345-1483

    128 Total Sales

    1 in Castro Valley East

    $1,550,000 Price

    David Earley
     Section Image
See All Agents

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
$755,000 Old Republic Title Company
Ostergard George D -- None Available
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 $984,400
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
07/29/2025 07/29/25 Sold $755,000 +16.3% $699 / Sq Ft
07/11/2025 07/11/25 Pending -- -- --
07/04/2025 07/04/25 For Sale $649,000 -- $601 / 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 $2,969 $755,000 $226,500 $528,500
2025 $2,889 $177,908 $124,047 $60,861
2024 $2,889 $174,283 $121,615 $59,668
2023 $2,822 $177,729 $119,231 $58,498
2022 $2,750 $167,245 $116,894 $57,351
2021 $2,673 $163,829 $114,602 $56,227
2020 $2,609 $169,078 $113,427 $55,651
2019 $2,644 $165,764 $111,204 $54,560
2018 $2,567 $162,514 $109,024 $53,490
2017 $2,496 $159,327 $106,886 $52,441
2016 $2,373 $156,204 $104,791 $51,413
2015 $2,218 $153,858 $103,217 $50,641
2014 $2,168 $150,844 $101,195 $49,649
Source: Public Records

Agents Affiliated with this Home

  • Leslie Peterson Real Estate Agent

    Seller's Agent in 2025

    Leslie Peterson

    (510) 697-1208

    11 in this area

    140 Total Sales

    Leslie Peterson
    Section Image

  • KB

    Buyer's Agent in 2025

    Kristen Bleth

    Evolve Real Estate

See All Agents

Map

Source: Bay East Association of REALTORS®

MLS Number: 41103454

Bay East Association of REALTORS®

APN: 084C-0669-053-00

California Alameda County Castro Valley 94546 Castro Valley East

4247 Gem Ave, 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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