20401 Blue Mountain Drive, Walnut, CA 91789

Walnut
Local realty services provided by:ERA North Orange County Real Estate
20401 Blue Mountain Drive,Walnut, CA 91789
$2,800,000
  • 6 Beds
  • 5 Baths
  • 6,623 sq. ft.
  • Single family
  • Active
Listed by: mercedes barba
Office: exp commercial of california, inc.
MLS#:26106361
Source:CRMLS

Price summary

  • Price:$2,800,000
  • Price per sq. ft.:$422.77

About this home

Located in the Walnut Valley Unified School District and close to Mt. San Antonio College and Cal Poly Pomona, this extremely private 5.6-acre hillside estate in Walnut sits at the end of a long driveway with valley and mountain views. The two-story Spanish-style main home offers about 5,471 sq ft with 4 bedrooms, 4 baths, a dramatic atrium, formal dining room, entertainment room, billiards room, and sweeping tile throughout. A separate 1,152 sq ft guest house adds 2 bedrooms and 1 bath. Pool and spa. No HOA. Offered as-is.

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Home facts

  • Year built:1987
  • Listing ID #:26106361
  • Added:1 day(s) ago
  • Updated:November 13, 2026 at 12:59 PM

Rooms and interior

  • Bedrooms:6
  • Total bathrooms:5
  • Full bathrooms:5
  • Kitchen Description:Refrigerator
  • Living area:6,623 sq. ft.

Heating and cooling

  • Heating:Central

Structure and exterior

  • Roof:Tile
  • Year built:1987
  • Building area:6,623 sq. ft.
  • Lot area:5.6 Acres
  • Lot Features:Horse Property
  • Architectural Style:Spanish
  • Construction Materials:Stucco
  • Foundation Description:Slab
  • Levels:2 Story

Utilities

  • Sewer:Septic Tank

Finances and disclosures

  • Price:$2,800,000
  • Price per sq. ft.:$422.77

Features and amenities

  • Amenities:Atrium
  • Pool features:In Ground, Private

Parking

  • Parking description:Door-Multi, Driveway, Garage
  • Garage:Yes
  • Garage spaces:3
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