20950 Cornerstone Drive, Walnut, CA 91789
20950 Cornerstone Drive, Walnut, CA 91789
Property Description
Within walking distance—approximately one mile—of award-winning elementary, middle, and high schools in the Walnut Valley Unified School District. Ask about available interest rate buydown options that may help reduce your monthly payment. Elevated Living at Cornerstone by Shea Homes Built 2018 | Soaring 9' High Ceilings & Light-Filled Living | Entry-Level Suite | Over $40k in Upgrades Discover an impressive sense of space with abundant natural light, and expansive open-concept living, this thoughtfully enhanced residence offers an airy, inviting setting for everyday comfort and effortless entertainment Space to Gather. Privacy to Retreat The connected living, dining, and kitchen spaces create a welcoming heart of the home, with a covered balcony offering a peaceful place for morning coffee or an evening pause. An entry-level bedroom with its own en-suite bathroom provides a private retreat for visiting guests or a dedicated home office, separate from the main living areas. Upstairs, the primary suite features a walk-in closet and dual-sink bathroom, while bedroom-level laundry and a direct-access two-car garage add everyday convenience. Enjoy landscaped community playground, dog park, BBQ areas, and connect with neighbors Thoughtful Upgrades of over $40k In builder options and owner-added upgrades, bring together designer finishes and practical enhancements. Two-zone climate control allows the 3rd floor bedrooms to be regulated separately from the lower levels, a valuable feature in a three-story home. Reverse-osmosis water filtration system, and EV charger complement upgraded flooring, quartz surfaces, and primary shower finishes Prime Location & Future Value •Education: Nestled in the prestigious Walnut Valley Unified School District, Walnut High School, Suzanne Middle School, and Vejar Elementary School, with walking distance in 1 mile, Mt. San Antonio College and Cal Poly Pomona are approximately 2.9 and 4.3 miles away •Regional Attractions & Convenient Travel: Located apprx 17 miles from Honda Center—a confirmed indoor volleyball venue for the 2028 Olympic Games and the emerging $4 billion OCVIBE entertainment district, with phased openings beginning in 2027. Ontario International Airport is apprx 18 miles away, adding convenience for business and leisure travel Photos tell part of the story, please come experience the space, the light, and the feeling of home for yourself.
Features & Amenities
Property Details
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Comparative Market Analysis
Residential Tier · 1 active · 5 closed
Walnut · Condominium
Listed 7.6% above the median closed sale of $825,600.
Price Position
Positioned above the market — commands a premium.
Active Properties (1)
Active Comparables
| Address | City | Year | BD | BTH | SqFt | LotSz | LP/SqFt | LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| 1034 Romney Drive | Walnut | 1980 | 3 | 3 | 1,846 | 2,308 | $421 | $777,000 | 3 | 66 |
| Total: 1 · Average | 3.0 | 3.0 | 1,846 | 2,308 | $421 | $777,000 | 3 | |||
| Median | 1,846 | $777,000 | ||||||||
Closed Properties (5)
Closed Comparables
| Address | City | Year | Date | BD | BTH | SqFt | LotSz | LP | SP | SP/SqFt | SP/LP | DIM | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20982 Cornerstone Dr | Walnut | 2018 | 08/13/2026 | 4 | 3 | 1,830 | 17,441 | $998,000 | $1.01M | $555 | 1.02 | 46 | 90 |
| 1229 Porto Grande | Diamond Bar | 1984 | 12/04/2025 | 2 | 3 | 1,578 | 175,874 | $779,880 | $770,000 | $488 | 0.99 | 160 | 56 |
| 22810 Chardonnay Drive | Diamond Bar | 1984 | 09/17/2026 | 3 | 3 | 1,485 | 166,078 | $798,000 | $808,000 | $544 | 1.01 | 28 | 55 |
| 2117 Dublin | Diamond Bar | 1989 | 07/07/2026 | 4 | 3 | 1,757 | 1,001,024 | $899,888 | $875,000 | $498 | 0.97 | 97 | 55 |
| 23025 Paseo De Terrado | Diamond Bar | 1986 | 08/27/2026 | 3 | 3 | 1,641 | 146,620 | $844,000 | $825,600 | $503 | 0.98 | 90 | 54 |
| Total: 5 · Average | 3.2 | 3.0 | 1,658.2 | 301,407.4 | $858,720 | $858,720 | $517.6 | — | 84.2 | ||||
| Median | 1,641 | $825,600 | $825,600 | ||||||||||
Market Analysis
List vs Sale $/SqFt
Sale Price Trend
Days on Market
Sale vs List Price
This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.