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 multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. as of 7/28/26 3:16 AM 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
2426 Sierra DR, Upland, CA 91784 (MLS # CV26163576)
Additional Details
Location
Contact us about this Property
The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. as of 7/28/26 3:16 AM 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
This IDX solution is (c) Diverse Solutions 2026.