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Welcome to 20048 Sapphire St. in the heart of desirable Castro Valley! Offered for the first time ever, this charming single-story home is full of opportunity and ready for its next chapter. Featuring 3 bedrooms, 2 bathrooms, and a detached 2-car garage, this well-loved property offers great bones, a functional layout, and endless potential for buyers looking to add their own style and vision. Situated on a beautifully maintained lot with thoughtfully landscaped front and back yards, the home offers inviting curb appeal and outdoor spaces perfect for gardening, entertaining, or simply relaxing. Inside, you'll find a cozy and comfortable floorplan with plenty of space to grow and the chance to create the home of your dreams. Whether you're a first-time buyer, investor, or someone looking for a cosmetic fixer in an established neighborhood, this is a rare opportunity you won't want to miss. Located in a highly sought-after Castro Valley neighborhood known for its strong community feel, convenient commuter access, and top-rated schools, this home is near Marshall Elementary, Creekside Middle School, and Castro Valley High School. Enjoy close proximity to parks, shopping, dining, BART, and major freeways while still enjoying the charm of a quiet residential street. Homes with this kind of potential, location, and pride of ownership rarely come available, bring your imagination and make 20048 Sapphire St. your own!
Property Type(s):
Single Family
| Last Updated | 5/11/2026 | Tract | None |
|---|---|---|---|
| Year Built | 1949 | Garage Spaces | 2.0 |
| County | Alameda |
Additional Details
| AIR | Central Air |
|---|---|
| AIR CONDITIONING | Yes |
| APPLIANCES | Dryer, Gas Water Heater, Washer |
| CONSTRUCTION | Stucco |
| FIREPLACE | Yes |
| GARAGE | Attached Garage, Yes |
| HEAT | Forced Air |
| LOT | 6116 sq ft |
| LOT DESCRIPTION | Back Yard, Front Yard |
| LOT DIMENSIONS | 6116 |
| PARKING | Attached, Garage, Garage Door Opener, Off Street |
| POOL DESCRIPTION | None |
| STORIES | 1 |
| SUBDIVISION | None |
Location
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Listed with CENTURY 21 Masters
The information being provided by Conejo Simi Moorpark Association of REALTORS® (“CSMAR”) is for the visitor's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. Any information relating to a property referenced on this web site comes from the Internet Data Exchange (“IDX”) program of CSMAR. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. Any information relating to a property, regardless of source, including but not limited to square footages and lot sizes, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals. The data contained herein is copyrighted by CSMAR and is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited.
This IDX solution is (c) Diverse Solutions 2026.
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