About This Home

This 4-bedroom, 6-bathroom single family at 255 W 21st Street in Upland, CA is listed for $3,850,000 ($516 per sqft). Built in 2023, the home offers 7,459 sqft of living space on a 2.72 acres lot.

Key Features

  • Built in 2023
  • 2.72 acre lot
  • 13 parking spaces
  • Fireplace

Property Details

1 story
4 full, 2 half
3-car garage
2023

Amenities

FireplaceA/CRV Parking
Listing Description

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 2.84 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.

Monthly Cost Estimate

$20,591/mo

20% down · 6.5% · 30 years

Principal$2,784
Interest$16,683
Insurance$1,123

Estimates only. Actual payments may vary.

Location

255 W 21st Street

Upland, CA 91784

Features & Amenities

Interior Features

Built-in FeaturesHigh CeilingsPantryRecessed LightingGranite Counters

Exterior Features

Corral

Property Details

Flooring

ConcreteCarpetLaminate

Construction

Cement Siding Frame Concrete Glass Drywall Walls

Outdoor Features

Porch

Parking

RVGarageDriveway

Heating

Forced AirNatural GasCentral

Cooling

Central AirElectric

Appliances

DisposalDishwasher

Questions & Answers

This 4-bedroom, 6-bathroom single family at 255 W 21st Street is listed at $3,850,000 ($516/sqft). The estimated monthly payment is $20,591 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 2023, 2.72 acre lot, 13 parking spaces, Fireplace. Interior Features: Built-in Features, High Ceilings, Pantry. Exterior Features: Corral.

This property is listed by Donald Mowery.

DM

Donald Mowery

License 01193547

Agent at eXp Realty of California, Inc.

Listed by eXp Realty of California, Inc. · Broker phone: (888) 584-9427 · Broker website

MLS# CV26232076· Source: California Regional Multiple Listing Service, Inc· 37 days on PropertySimple

Copyright © 2026 California Regional Multiple Listing Service, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

255 W 21st Street, Upland, CA 91784

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