4247 Gem Ave, Castro Valley, CA

Photo coming soon

$999,000 $575 / sqft Est. $5,051/mo

3
Beds: 3
Baths: 1,737
Sq Ft

Active 1 day on market

Listed By Kristen BlethDRE #02058725

Evolve Real Estate

Virtual Tour (opens in a new tab)

Your inquiry will go to Brenda Geraci, who is not the listing agent for this property.

Lot Size: 5,775 sqft
Year Built: 1947
Property Type: Residential
Property Subtype: Single-family home
Levels: One
Stories: 1
Garage Spaces: 1
Pool: No
HOA: No
Days on Market: 1 day

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!

Open Houses

Friday, October 23 · 4:30 PM – 6:30 PM
Saturday, October 24 · 2:00 PM – 5:00 PM
Sunday, October 25 · 1:00 PM – 4:00 PM

Estimate a monthly payment

Home priceDown paymentDown %Interest rate %Term

—/mo

Principal and interest only. Property taxes, insurance and any HOA dues are not included and will increase this amount.

Estimates only, for your own planning. Not a loan offer, a pre-qualification, or a quote from any lender.

Features

Interior Features

Interior: Breakfast Bar
Fireplace: Living Room
Flooring: Wood

Exterior Features

Lot: Back Yard
Front Yard
Garden
Street Level
Parking: Garage
Roof: Shingle

Market insights

Computed from CRMLS data for Castro Valley.

Property history

No prior MLS sale records.

Based on information from California Regional Multiple Listing Service, Inc. as of October 24, 2026 at 12:15 PM PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Any amount of compensation or commission stated is made only to participants of CRMLS or an MLS that has entered into a datashare agreement with CRMLS.