4247 Gem Ave

• Fri Oct 23, 4:30 pm - 6:30 pm

  Open House

• Sat Oct 24, 2:00 pm - 5:00 pm

  Open House 2-5pm

• Sun Oct 25, 1:00 pm - 4:00 pm

  Open House 1-4pm

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!

Current Status

New

Original Price

$999,000

List Price

$999,000

On Market Date

Oct 20, 2026

Property Type

Detached

D/N/S

Castro Valley

Zip Code

94546

MLS ID

41151756

APN

84C66953

Year Built

1947

Stories in Building

1

Possession

Close Of Escrow

Data Source

MAXEBRDI

Origin MLS System

BAY EAST

Bed

3

Bath

3

Parking

1

Attached

SQ FT

1,737

SQ FT Source

Other

Lot SQ FT

5,775.0

Lot Acres

0.13 Acres

Pool Info

None

Kitchen

Dishwasher, Gas Range, Refrigerator, Tankless Water Heater, Breakfast Bar, Stone Counters, Disposal, Gas Range/Cooktop, Updated Kitchen, Other

Cooling

None

Disclosures

Other - Call/See Agent

Entry Level

Exterior Details

Garden, Back Yard, Front Yard, Garden/Play, See Remarks

Flooring

Hardwood

Foundation

Fire Place

Living Room

Heating

Central

Laundry

Hookups Only, Laundry Room

Main Level

3 Bedrooms, 3 Baths, Laundry Facility, Other, Main Entry

Possession

Close Of Escrow

Architectural Style

Ranch

Construction Status

Existing

Additional Miscellaneous Features

Garden, Back Yard, Front Yard, Garden/Play, See Remarks

Location

Level, See Remarks

Roof

Composition Shingles

Water and Sewer

Public

Fee

Unavailable

MLS and other Information regarding properties for sale as shown in Theo have been obtained from various sources such as sellers, public records, agents and other third parties. This information may relate to the condition of the property, permitted or unpermitted uses, zoning, square footage, lot size/acreage or other matters affecting value or desirability. Unless otherwise indicated in writing, neither brokers, agents nor Theo have verified, or will verify, such information. If any such information is important to buyer in determining whether to buy, the price to pay or intended use of the property, buyer is urged to conduct their own investigation with qualified professionals, satisfy themselves with respect to that information, and to rely solely on the results of that investigation.

School data provided by GreatSchools. School service boundaries are intended to be used as reference only. To verify enrollment eligibility for a property, contact the school directly.