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Welcome to 2426 Sierra Drive, Upland, CA 91784, an exceptional opportunity to own a custom estate in the prestigious San Antonio Heights. Situated on a sprawling 19,826 sq. ft. lot, this custom home offers approximately 3,855 sq. ft. of main living space, plus a 340 sq. ft. detached guest house above the two-car garage, for a total of approximately 4,195 sq. ft. Built in 2005, this one-of-a-kind residence has never been lived in and presents a rare chance to complete a truly remarkable home to your own taste. The interior is approximately 90% complete and showcases quality craftsmanship throughout, including Saltillo tile flooring, smooth drywall finishes, solid birch interior doors, hardwood flooring, and beautifully appointed custom Spanish tile bathrooms. The thoughtfully designed floor plan features a spacious mudroom/craft room, generous living areas, and a luxurious primary suite with breathtaking city light views, a spa-inspired bathroom with a walk-in shower, soaking tub, and large walk-in closet. The home has received its Certificate of Occupancy but requires the finishing touches to bring this estate to its full potential. The property is currently operating on temporary power and will need permanent electrical service energized by Southern California Edison, as well as installation of a natural gas meter. Additional improvements include exterior paint and landscaping, allowing the next owner to personalize the final details. With its exceptional location, custom construction, detached guest house, and incredible potential, 2426 Sierra Drive offers a rare opportunity to create one of the premier estates in San Antonio Heights. Complete the vision and transform this extraordinary property into the dream home you've always imagined for you and your family.
Property Type(s):
Single Family
| Last Updated | 7/27/2026 | Year Built | 2005 |
|---|---|---|---|
| Community | 690 - Upland | Garage Spaces | 3.0 |
| County | San Bernardino |
Additional Details
| AIR | Central Air, Dual |
|---|---|
| AIR CONDITIONING | Yes |
| APPLIANCES | Built-In Range, Double Oven |
| AREA | 690 - Upland |
| EXTERIOR | Balcony |
| FIREPLACE | Yes |
| GARAGE | Attached Garage, Yes |
| HEAT | Central |
| INTERIOR | Bar, Beamed Ceilings, Built-in Features, Cathedral Ceiling(s), High Ceilings, Pantry, Recessed Lighting, Storage, Tile Counters, Walk-In Closet(s), Wet Bar |
| LOT | 0.4551 acre(s) |
| LOT DIMENSIONS | 19826 |
| PARKING | Attached, Driveway, Garage Faces Front, Garage, Garage Faces Side |
| POOL DESCRIPTION | None |
| SEWER | Septic Tank |
| STORIES | 2 |
| STYLE | Mediterranean |
| VIEW | Yes |
| VIEW DESCRIPTION | City Lights, Mountain(s) |
| WATER | Private |
Location
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Listed with Price Real Estate Group, Inc
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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