Property Description
TurboHome Fair Market Estimate
TurboHome Savings
$15,249
$965,800
$549 sqft
3rd Party Estimates
Source | $/sqft | Valuation |
---|---|---|
HouseCanary | $549/sqft | $965,800 |
Neighborhood
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Comparative Value
$887K
$915K
$960K
$1.02M
$1.14M
$1.33M
1020 Gona Ct, Diamond Bar, CA 91789
Sale Price: $887,000
Selected Comparable
20956 Cornerstone Dr, Walnut, CA 91789
List Price: $915,000
Subject Property
20980 Cornerstone Dr, Walnut, CA 91789
Sale Price: $960,000
Selected Comparable
21598 Magnolia St, Walnut, CA 91789
Sale Price: $1,025,000
Selected Comparable
139 Seneca Dr, Walnut, CA 91789
Sale Price: $1,138,800
Selected Comparable
21212 Valleyview Dr, Walnut, CA 91789
Sale Price: $1,328,000
Selected Comparable
Neighborhood Comps
Subject Property
SUBJECT20956 Cornerstone Dr, Walnut, CA 91789
List: $915,000
Listed: 8/5/2025
Comparable Properties
COMPARABLE20980 Cornerstone Dr, Walnut, CA 91789
Sale: $960,000
3/24/2025 • 0.02 mi
21212 Valleyview Dr, Walnut, CA 91789
Sale: $1,328,000
8/13/2025 • 0.43 mi
139 Seneca Dr, Walnut, CA 91789
Sale: $1,138,800
4/7/2025 • 0.19 mi
1020 Gona Ct, Diamond Bar, CA 91789
Sale: $887,000
5/13/2025 • 1.29 mi
21598 Magnolia St, Walnut, CA 91789
Sale: $1,025,000
10/16/2024 • 1.04 mi
Subject Property
SUBJECTImage | Address | List Price | sqft | Price/sqft | Lot Size | Distance | List Date | Beds | Baths | Year Built | Weight |
---|---|---|---|---|---|---|---|---|---|---|---|
20956 Cornerstone Dr, Walnut, CA 91789 | $915,000 | 1,760 | $520 | 17,411 | — | 8/5/2025 | 3 | 4 | — | — |
Comparable Properties
COMPARABLEImage | Address | Sale Price | sqft | Price/sqft | Lot Size | Distance | Sale Date | Beds | Baths | Year Built | Weight |
---|---|---|---|---|---|---|---|---|---|---|---|
20980 Cornerstone Dr, Walnut, CA 91789 | $960,000 | 1,760 | $545 | 17,469 | 0.02 mi | 3/24/2025 | 3 | 4 | — | 23.7% | |
21212 Valleyview Dr, Walnut, CA 91789 | $1,328,000 | 1,811 | $733 | 12,294 | 0.43 mi | 8/13/2025 | 3 | 3 | — | 21.1% | |
139 Seneca Dr, Walnut, CA 91789 | $1,138,800 | 1,811 | $629 | 10,384 | 0.19 mi | 4/7/2025 | 3 | 3 | — | 20.4% | |
1020 Gona Ct, Diamond Bar, CA 91789 | $887,000 | 1,846 | $480 | 6,539 | 1.29 mi | 5/13/2025 | 3 | 3 | — | 18.2% | |
21598 Magnolia St, Walnut, CA 91789 | $1,025,000 | 1,913 | $536 | 6,152 | 1.04 mi | 10/16/2024 | 3 | 3 | — | 16.6% |
Nearby Listings
38 similar properties within 5 miles

20950 Cornerstone Dr, Walnut, CA 91789
TurboHome Est. Value:
$976,600

578 Vista Rambla, Walnut, CA 91789
TurboHome Est. Value:
$996,800

318 S Palo Cedro Dr, Diamond Bar, CA 91765
TurboHome Est. Value:
$998,800
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