NOT LISTED FOR SALE

4448 Gem Ave Castro Valley, CA 94546

Castro Valley East Neighborhood

Estimated Value: $1,292,000 - $1,510,193

5 Beds
3 Baths
2,407 Sq Ft
$572/Sq Ft Est. Value

Sale Details

Date Sold: May 23, 2024

Last sale price $1,300,000 $540 Per Sq Ft

Est. 6% increase in value since last sale

Current estimated payment $8,007 / mo

12 Days on Market

Highlights

  • Parking available for a boat
  • Home fronts a creek
  • 0.39 Acre Lot
  • Marshall Elementary School Rated A
  • Solar Power System
  • Traditional Architecture

About This Home

As of May 2024

Nestled in the heart of Castro Valley, 4448 Gem shines as the crown jewel of the neighborhood! With approximately 1964 square feet, the main house features 4 bedrooms & 2 full bathrooms. The upper level hosts 3 of the bedrooms, 1 bathroom, living room, kitchen, & dining area. The lower level has many possibilities & can function as a 4th bedroom, in-law unit, or rental unit as it has a bedroom area, living space, full bathroom, second kitchen, walk-in closet, & separate entrance. There is ALSO an attached 443 sq ft studio unit that is fully separated from the main house and it offers a bedroom area, kitchen & full bath that can be used as a rental unit, or for one's own uses such as an art studio or home office! Updates include luxury vinyl floors, fresh paint, renovated kitchen & baths, new lighting, dual pane windows, fences, & driveway. The 17,000 sq ft lot boasts park-like grounds & borders tranquil crow creek. It offers a shed, planter boxes, & a large deck. A new driveway provides side access & boat/RV parking. Prime CV location with one block to Creekside Middle School, & walking distance to Earl Warren Park! Enjoy the shops, services, & restaurants of Castro Village and the new Castro Valley Marketplace. Close to CV Bart & major highways! 3d tour: www.4448Gem.com/?mls

Last Agent to Sell the Property

Julienne Courtney

License #01376948 Listed on: 04/25/2024

Last Buyer's Agent

Sonali Sethna

Compass License #01194792

Compass

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1950

Lot Details

  • 17,135 Sq Ft Lot
  • Home fronts a creek
  • Cul-De-Sac
  • Partially Fenced Property
  • Garden
  • Back and Front Yard

Parking

  • 2 Car Detached Garage
  • Parking available for a boat
  • RV or Boat Parking

Home Design

  • Traditional Architecture
  • Stucco

Interior Spaces

  • 2-Story Property
  • Wood Burning Fireplace
  • Family Room
  • Living Room with Fireplace
  • Dining Area
  • Home Office
  • Bonus Room

Kitchen

  • Dishwasher
  • Stone Countertops
  • Disposal

Flooring

  • Carpet
  • Vinyl

Bedrooms and Bathrooms

  • 5 Bedrooms
  • In-Law or Guest Suite
  • 3 Full Bathrooms

Laundry

  • Dryer
  • Washer

Home Security

  • Carbon Monoxide Detectors
  • Fire and Smoke Detector

Eco-Friendly Details

  • Solar Power System
  • Solar owned by a third party

Outdoor Features

  • Shed

Utilities

  • No Cooling
  • Heating System Uses Natural Gas
  • Tankless Water Heater

Community Details

  • No Home Owners Association
  • Bay East Association
  • Castro Valley Subdivision

Listing and Financial Details

  • Assessor Parcel Number 84C106328

Home Details

Home Type

Single Family

Year Built

Built in 1950

Lot Details

0.39 Acres

Parking

2

Listing Details

  • Stories: 2
  • Year Built: 1950
  • Property Sub Type: Single Family Residence
  • Prop. Type: Residential
  • Lot Size Acres: 0.39
  • Subdivision Name: CASTRO VALLEY
  • Directions: Center to Gem
  • Architectural Style: Traditional
  • Carport Y N: No
  • Garage Yn: Yes
  • Unit Levels: Two Story
  • New Construction: No
  • Power Production Type: Photovoltaics
  • ResoPropertyType: Residential
  • Special Features: VirtualTour

Interior Features

  • Flooring: Vinyl, Carpet
  • Appliances: Dishwasher, Disposal, Refrigerator, Dryer, Washer, Tankless Water Heater
  • Full Bathrooms: 3
  • Total Bedrooms: 5
  • Fireplace Features: Living Room, Wood Burning
  • Fireplaces: 1
  • Fireplace: Yes
  • Interior Amenities: Au Pair, Bonus/Plus Room, Dining Area, Family Room, In-Law Floorplan, Office, Stone Counters
  • Room Kitchen Features: Counter - Stone, Dishwasher, Garbage Disposal, Refrigerator

Exterior Features

  • Fencing: Partial Fence, Fenced
  • Lot Features: Cul-De-Sac, Level, Front Yard
  • Pool Features: None
  • Pool Private: No
  • Waterfront Features: Creek
  • Waterfront: Yes
  • Construction Type: Siding - Stucco
  • Exterior Features: Backyard, Garden, Back Yard, Front Yard, Garden/Play, Side Yard
  • Other Structures: Shed(s)
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 2
  • Attached Garage: No
  • Covered Parking Spaces: 2
  • Parking Features: Detached, Garage, RV/Boat Parking, Side Yard Access, Boat, RV Access

Utilities

  • Heating: Natural Gas
  • Utilities: All Public Utilities
  • Cooling: None
  • Laundry Features: Dryer, Laundry Room, Washer, Cabinets, Sink
  • Security: Carbon Monoxide Detector(s), Smoke Detector(s)
  • Cooling Y N: No
  • Heating Yn: Yes
  • Electric: Photovoltaics Third-Party Owned
  • Sewer: Public Sewer
  • Water Source: Public

Condo/Co-op/Association

  • Association Name: BAY EAST
  • Association: No

Lot Info

  • Lot Size Sq Ft: 17135
  • Parcel Number: 84C106328
  • 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
Apr 25, 2024
Closed on
May 16, 2024
Sold by
Bought by
Seller's Agent
Julienne Courtney
Buyer's Agent
Sonali Sethna
Compass
List Price
$1,395,000
Sold Price
$1,300,000
Premium/Discount to List
-$95,000
-6.81%
Views
53
Current Estimated Value
$1,377,298

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$77,298
Avg. Annual Appreciation
2.82%

Purchase Details

Closed on
Mar 10, 2015
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$387,845
Interest Rate
3.75%
Mortgage Type
FHA

Purchase Details

Closed on
Nov 17, 2011
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$307,500
Interest Rate
3.87%
Mortgage Type
Seller Take Back

Purchase Details

Closed on
Nov 8, 2011
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$307,500
Interest Rate
3.87%
Mortgage Type
Seller Take Back

Purchase Details

Closed on
Mar 1, 2007
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$647,200
Interest Rate
4%
Mortgage Type
Purchase Money Mortgage

Purchase Details

Closed on
Oct 11, 2004
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$469,600
Interest Rate
4.25%
Mortgage Type
Purchase Money Mortgage

Purchase Details

Closed on
Jan 29, 2003
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$300,000
Interest Rate
5.83%

Purchase Details

Closed on
Feb 4, 1999
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$198,000
Interest Rate
6.77%
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
Not Available
List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

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
$1,300,000 Old Republic Title
$395,000 Old Republic Title Co
$417,500 Old Republic Title Company
-- Old Republic Title Company
$392,500 Old Republic Title Company
$809,000 Alliance Title Company
$587,000 North American Title Company
-- North American Title Co
-- Fidelity National Title Co
$247,500 Old Republic Title Company
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
Previous Owner $387,845
Previous Owner $307,500
Previous Owner $647,200
Previous Owner $469,600
Previous Owner $300,000
Previous Owner $198,000
Closed $49,500
Closed $88,050
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
02/04/2025 02/04/25 Off Market $1,300,000 -- --
05/23/2024 05/23/24 Sold $1,300,000 -6.8% $540 / Sq Ft
05/07/2024 05/07/24 Pending -- -- --
04/25/2024 04/25/24 For Sale $1,395,000 -- $580 / 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
2025 $6,814 $883,080 $267,024 $623,056
2024 $6,814 $507,096 $154,167 $359,929
2023 $6,695 $504,018 $151,145 $352,873
2022 $6,559 $487,135 $148,181 $345,954
2021 $6,389 $477,450 $145,277 $339,173
2020 $6,241 $479,485 $143,788 $335,697
2019 $6,351 $470,088 $140,970 $329,118
2018 $6,170 $460,874 $138,207 $322,667
2017 $6,006 $451,838 $135,497 $316,341
2016 $5,714 $442,979 $132,840 $310,139
2015 $5,418 $436,328 $130,846 $305,482
2014 $5,347 $427,782 $128,283 $299,499
Source: Public Records

Agents Affiliated with this Home

  • J

    Seller's Agent in 2024

    Julienne Courtney

    (925) 989-1669

    2 in this area

    67 Total Sales

    Julienne Courtney
    Section Image
  • Sonali Sethna

    Buyer's Agent in 2024

    Sonali Sethna

    Compass

    (925) 525-2569

    1 in this area

    64 Total Sales

    Sonali Sethna
    Section Image
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Map

Source: Bay East Association of REALTORS®

MLS Number: 41057504

Bay East Association of REALTORS®

APN: 084C-1063-028-00

California Alameda County Castro Valley 94546 Castro Valley East

4448 Gem Ave, Castro Valley, CA

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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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