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255 W 21st Street Upland, CA 91784
$3,850,000 4 beds, 6 baths
7, 459 sqft
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A RARE OPPORTUNITY. AN EXTRAORDINARY ESTATE. THE FREEDOM TO BRING IT TO LIFE. Imagine owning nearly three acres in prestigious North Upland, nestled against the breathtaking San Gabriel Mountains, with the opportunity to create the luxury estate of your dreams! Situated on approximately 2.8 usable acres, this remarkable property offers exceptional privacy, architectural scale, and endless possibilities. The approximately 7,500-square-foot single-story residence features 4 bedrooms, 4 full bathrooms, 2 half bathrooms, soaring 14-foot ceilings, impressive 9.3-foot doors, and an oversized attached 3-car garage. Grand living spaces include a formal living room with fireplace, formal dining room, bar and wine room, spacious kitchen with breakfast area and pantry, and family room with fireplace. The private east wing features an executive office and expansive primary suite with fireplace, en suite bathroom, walk-in shower, soaking tub, dual walk-in closets, and private patio access. The west wing offers three spacious bedrooms, each with its own bathroom and walk-in closet. A separate structure includes an approximately 800-square-foot casita/guest unit with living area, kitchenette, bedroom, and bathroom; an additional 2-car garage; and an impressive 60-foot-deep RV garage with hookups. An approximately 1,350-square-foot upstairs loft offers incredible potential for a private theater, fitness studio, executive offices, or entertainment lounge. Additional features include remote-start fireplaces, fire sprinklers, a fire hydrant, insulated and sheathed walls, and eight redwood pine trees. The expansive grounds provide an extraordinary canvas for a resort-style pool and spa, outdoor entertaining, gardens, and beautifully landscaped grounds. The true luxury is the freedom to make it your own. With nearly 10,000 square feet of combined living and versatile space, much of the foundation for an extraordinary estate is already in place. Complete the residence with your preferred finishes and create a one-of-a-kind sanctuary designed around your lifestyle.

Listing Details

Property type: Single Family Residence (Single Family)
Status: Active
MLS# CV26232076
List price is $3,850,000
HOA Fee is $0.00
Beds: 4
Baths: 6 (4 full) (2 half)
Bonus Room,Living Room fireplaces
Built in 2023
7,459 sqft
1 story
2.72 acres
Lot size: 2.7213
County: San Bernardino
Property style: Mediterranean
Zoning: RS-20
Construction: Cement Siding,Drywall,Frame,Glass,Concrete
Interior features: Breakfast Bar,Built-in Features,Breakfast Area,Separate/Formal Dining Room,Granite Counters,High Ceilings,Pantry,Recessed Lighting,Entrance Foyer,Primary Suite,Walk-In Pantry,Walk-In Closet(s)
Appliances: Dishwasher,Disposal
Parking description: Concrete,Direct Access,Driveway,Garage,RV Garage,RV Hook-Ups,Garage Faces Side
Lot description: Lot Over 40000 Sqft,No Landscaping
Heating/cooling: Central Air,Electric
Heating description: Central,Forced Air,Natural Gas
MLS area: 690 - Upland

Last Updated: 10/30/2026

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This listing belongs to the 690 - Upland MLS area

The style of this listing is Mediterranean.
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Lat/Long: 34.140801, -117.654598.
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Listing Agent: Donald Mowery
Lic#: 01276603
Office Name: Tustin

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Area Overview

Total population of , which has changed by % since 1990.
The median age of the population is , while the median age of dwellings is .
Out of households, are families.

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