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255 W 21st StreetUpland, CA 91784

For Sale

$3,850,000

Smart Buyer Rebate $38,500

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.

Listed by Donald Mowery

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License #01193547

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EXP REALTY OF CALIFORNIA INC

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909-981-6677

Last updated October 30, 2026

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Source: CRMLS #CV26232076

Listing Facts

  • TypeSingle-family
  • NeighborhoodUpland
  • Bedrooms4
  • Bathrooms5
  • Days on Prevu3
  • Size7,459 sqft
  • Price per sqft$516

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Air Conditioning
  • Parking

Location

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Listing History

10/28/2026
Listed by EXP REALTY OF CALIFORNIA INC
$3,850,000
  1. 10/28/2026$3,850,000
    Listed by EXP REALTY OF CALIFORNIA INC

Property Details for 255 W 21st Street

Association

Amenities

  • Community Features: Curbs, Street Lights, Suburban, Sidewalks

Exterior

Construction

  • Number Of Units Total: 1
  • Roof: Spanish Tile
  • Stories: 1
  • Stories Total: 1
  • Structure Type: House
  • Window Features: Screens
  • Year Built: 2023
  • Architectural Style: Mediterranean
  • Common Walls: No Common Walls
  • Construction Materials: Cement Siding, Frame, Glass, Concrete
  • Entry Level: 1
  • Entry Location: 1

Features

  • Direction Faces: South
  • Other Structures: Second Garage, Corral(s)
  • Patio And Porch Features: Covered, Front Porch
  • Road Frontage Type: City Street
  • View: Mountain(s), Neighborhood

Measurements

  • Lot Size Acres: 2.72
  • Lot Size Area: 118,539
  • Lot Size Source: Public Records
  • Lot Size Square Feet: 118,539
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 1043311290000

Interior

Features

  • Appliances: Dishwasher, Disposal
  • Fireplace Features: Living Room
  • Fireplace: Yes
  • Flooring: Carpet, Concrete, Laminate
  • Interior Features: Breakfast Bar, Built-in Features, Granite Counters, High Ceilings, Pantry, Recessed Lighting, Entrance Foyer, Walk-In Closet(s)

Measurements

  • Living Area: 7,459
  • Living Area Source: Public Records
  • Living Area Units: Square Feet

Rooms

  • Bathrooms Full: 4
  • Bathrooms Half: 2
  • Bathrooms Total Integer: 6
  • Bedrooms Total: 4
  • Main Level Bathrooms: 5
  • Main Level Bedrooms: 5

Other

General

  • Exclusions: Personal Property

Location

  • Tax Lot: 1&2

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 3
  • Garage: Yes
  • Open Parking Spaces: 10
  • Parking Features: Attached, Concrete, Direct Access, Driveway, Garage, RV Garage, Garage Faces Side
  • Parking Total: 13

Schools

Elementary School

  • Elementary School: Valencia

High School

  • High School: Upland
  • High School District: Upland

Utilities

Equipment

  • Cooling: Central Air, Electric
  • Has Cooling: Yes
  • Heating: Central, Forced Air, Natural Gas
  • Has Heating: Yes
  • Laundry Features: Washer Hookup, Gas Dryer Hookup, Inside, Laundry Room
  • Sewer: Public Sewer
  • Utilities: Cable Available, Electricity Connected, Natural Gas Available, Phone Available, Sewer Connected, Water Connected
  • Water Source: Private

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 4 bedrooms and 5 bathrooms in this single-family home at 255 W 21st Street.

What schools are nearby to 255 W 21st Street?

Nearby schools include the Valencia Elementary School and Upland High School.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 255 W 21st Street.

How does 255 W 21st Street compare to other single-family homes in Upland?

This single-family home is listed 314% above the average price for single-family homes in Upland and has been on the market for 96 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 7,459 sqft.

255 W 21st Street is a 4-bedroom, 5-bath single-family home for sale in Upland CA 91784. On Prevu for 3 days at $3,850,000. This home features 7,459 square feet of living space, located in Upland. The median listing price for single-family homes in this area is $796,900. Nearby schools include Valencia Elementary School and Upland High School. Additional amenities include private outdoor space, dishwasher, air conditioning, and parking. Explore more single-family home listings in California.

Based on information from California Regional Multiple Listing Service, Inc. 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 Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.