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  • 255 W 21St Street

255 W 21st Street, Upland, CA 91784

$3,850,000 Approx. USD 4 beds, 6 baths
7,459 sqft

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The Keaty Team REALTOR® - Sales Associate 714-608-3298 m
714-745-2708 o
Lic#: 01276603
NRDS ID: 187514104
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Lic#: 01276603
NRDS ID: 187514104
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Tustin Office
18302 Irvine Blvd, Suite 240
Tustin, CA 92780
Phone: 714-832-8800
Fax: 949-565-7700
Tustin 18302 Irvine Blvd, Suite 240
Tustin, CA 92780
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Listing Agent


Donald Mowery | don@mowerygroup.com
Lic#: 01193547
Broker: Courtesy of EXP REALTY OF CALIFORNIA INC
Phone: 888-584-9427

Agent Remarks

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
Price: $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

 Days On Market (DOM): 13

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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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DISCLAIMER: There is NO WARRANTY, expressed or implied, for the accuracy of this information or its applicability to your financial situation. Please consult your financial and/or tax advisor. GET PRE-APPROVED The loan's interest rate will depend upon the specific characteristics of the loan transaction and credit profile up to the time of closing.

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