For sale Home

Listed Oct 28, 2026

$3,850,000 Est. $25,464/mo

255 West 21st Street

  • 4

    Beds

  • 6

    Baths

  • 7,459

    Sq ft

The story

  • Pool

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 pin

Facts & features

Home type

Home

Year built

2023

Floors

1

Lot size

3 acres

Price per sq ft

$516

Parking

3-car garage

Included features

  • Pool

    Yes

  • Fireplace

    Yes

  • Cooling

    Central Forced Air, Electric

  • Heating

    Forced Air Unit

  • Appliances

    Dishwasher, Disposal

  • Flooring

    Carpet, Laminate

  • Roof

    Spanish Tile

  • Water Source

    Private

  • Sewer

    Public Sewer

  • View

    Mountain

Mortgage calculator

Estimated monthly payment

$25,464 /mo

7% rate · 30-yr fixed · 20% down

  • Principal & interest $20,491
  • Property tax $3,850
  • Insurance $1,123

Includes principal, interest, taxes & insurance.

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Listing Broker

EXP REALTY OF CALIFORNIA INC

Broker Name

EXP REALTY OF CALIFORNIA INC

Agent

Donald Mowery

Location

San Ramon CA 94583