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$999,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 3 Beds
  • 3 Full Baths
  • 1 Car Garage
  • Updated 5 minutes ago

Next open house:

Open House: 10:00 AM - 1:00 PM

Wednesday 10/21 10:00 AM - 1:00 PM

4247 Gem Ave,Castro Valley, CA 94546

4247 Gem AveCastro ValleyCA94546

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Join us at 4247 Gem Ave on:

  • Open House: 2:00 PM - 5:00 PM

    Saturday 10/24 2:00 PM - 5:00 PM

    4247 Gem Ave,Castro Valley, CA 94546
    4247 Gem AveCastro ValleyCA94546
  • Open House: 1:00 PM - 4:00 PM

    Sunday 10/25 1:00 PM - 4:00 PM

    4247 Gem Ave,Castro Valley, CA 94546
    4247 Gem AveCastro ValleyCA94546
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See This Home
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Welcome to 4247 Gem Avenue, a beautifully renovated single-story home in the heart of Castro Valley! Thoughtfully transformed with quality craftsmanship, modern finishes, and extensive upgrades completed with permits. The stunning kitchen features stainless steel appliances, custom cabinetry, a spacious island, and a pot filler. Beautifully designed bathrooms offer walk-in showers, rainfall showerheads, and modern fixtures. Major improvements include new electrical wiring with a 200-amp panel, updated plumbing and drainage, a new HVAC furnace and ductwork, and a new composition roof. Additional highlights include waterproof plank flooring, designer lighting, an EV-ready garage, and refreshed landscaping. Conveniently located near Castro Valley's highly regarded schools, shopping, dining, and commuter routes. Move-in ready with the peace of mind of permitted improvements!

Full Property Details for 4247 Gem Ave

General

  • Price: $999,000
  • Status: Active
  • Type: Single Family
  • Source: MAX
  • MLS ID: 41151756
  • Updated: Today (10/20/2026)
  • Added to Site: Today

Interior

  • Number of Rooms: 6
  • Interior Features: Dining Area, Breakfast Bar, Updated Kitchen
  • Number of Fireplaces: 3
  • Fireplace(s): Living Room
  • Appliances: Dishwasher, Gas Range, Refrigerator, Tankless Water Heater
  • Flooring: Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 3
  • Full Bathrooms: 3

Bedrooms

  • Total Bedrooms: 3

Other Rooms

  • Kitchen: Breakfast Bar, Stone Counters, Dishwasher, Disposal, Gas Range/Cooktop, Refrigerator, Updated Kitchen, Other
  • Laundry: Hookups Only, Laundry Room

Additional Information

  • Equipment: See Remarks

Exterior

  • Exterior Features: Garden, Back Yard, Front Yard, Garden/Play, See Remarks

Parking

  • Attached garage: Yes
  • Garage Spaces: 1
  • Parking Features: Attached

Location

  • Area: Listing
  • County: Alameda
  • Subdivision: Castro Valley
  • Driving Directions: GPS

Heating & Cooling

  • Cooling Type: None
  • Heating Type: Central

Utilities

  • Sewer: Public Sewer
  • Water: Public

Structural Information

  • Architectural Style: Ranch
  • Exterior Const.: Stucco
  • Roof: Composition Shingles
  • Stories/Levels: One Story
  • Year Built: 1947

Lot Features

  • Lot Size (Acres): 0.13
  • Lot Dimensions: 5775
  • Lot Features: Level, See Remarks
  • Fencing (Description): Fenced

Financial Considerations

  • Price Per Sq. Ft.: $575

Disclosures and Reports

  • Property ID: 84C66953

Listed by Evolve Real Estate, Kristen Bleth and eXp Realty of California, Sunday Nguyen

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Listing agents

— 4247 Gem Ave —

  • Kristen Bleth

    Evolve Real Estate

  • Sunday Nguyen

    eXp Realty of California

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 4247 Gem Ave

School District:Castro Valley Unified School District
NameGradesDistance
Marshall Elementary School, Castro Valley, CA
20111 Marshall Street, Castro Valley, CA 94546
K-50.1 mi
Creekside Middle School, Castro Valley, CA
19722 Center Street, Castro Valley, CA 94546
6-80.2 mi
Canyon Middle School
19600 Cull Canyon Road, Castro Valley, CA 94552
6-80.8 mi
Castro Valley High School
19400 Santa Maria Avenue, Castro Valley, CA 94546
9-120.9 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 4247 Gem Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
10/20/2026
Listed
$999,000
32.32%
MLS
7/23/2025
Sold
$755,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 4247 Gem Ave

Year
Property Taxes
Change
Tax Assessment
Change
2025
$2,969
—
$755,000
308%
2025
$2,969
3%
$184,908
2%
2024
$2,889
2%
$181,283
2%
2023
$2,822
3%
$177,729
2%
2022
$2,750
3%
$174,245
2%
2021
$2,673
2%
$170,829
1%
2020
$2,609
-1%
$169,078
2%
2019
$2,644
3%
$165,764
2%
2018
$2,567
3%
$162,514
2%
2017
$2,496
5%
$159,327
2%
2016
$2,373
7%
$156,204
2%
2015
$2,218
2%
$153,858
2%
2014
$2,168
2%
$150,844
—
2013
$2,130
—
$150,163
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Estimate the Cost for 4247 Gem Ave

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*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listed by Evolve Real Estate, Kristen Bleth and eXp Realty of California, Sunday Nguyen

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4247 Gem Ave, Castro Valley, CA 94546 (MLS# 41151756) is a Single Family property with 3 bedrooms and 3 full bathrooms. 4247 Gem Ave is currently listed for $999,000 and was received on October 20, 2026. Want to learn more about 4247 Gem Ave? Do you have questions about finding other Single Family real estate for sale in Castro Valley? You can browse all Castro Valley real estate or contact a Coldwell Banker agent to request more information.

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