21046 Cornerstone Dr
Walnut, CA 91789
4 bd 4 ba 1,933 sqft Built 2018 Lot 19,911 sqft condos
Most recent sale
$739,000
Jun 20, 2019
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Aug 15, 2022 | Listed | $898,000 | MLS #WS22179119 |
| Jun 20, 2019 | Sold | $739,000 | MLS #AR19063200 |
| Mar 21, 2019 | Listed | $749,000 | MLS #AR19063200 |
| Dec 6, 2018 | Sold | $679,500 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $373,711 | $599,062 | $972,773 | $11,991 |
| 2024 | $373,711 | $599,062 | $972,773 | $11,443 |
| 2023 | $305,147 | $487,207 | $792,354 | $9,521 |
| 2022 | $299,164 | $477,654 | $776,818 | $9,322 |
| 2021 | $293,299 | $468,289 | $761,588 | $9,150 |
| 2020 | $290,292 | $463,488 | $753,780 | $9,032 |
| 2019 | $274,400 | $404,900 | $679,300 | $677 |
| 2018 | — | $207,210 | $207,210 | $2,716 |
Property facts
Year built
2018
Property type
condos
Stories
3
Beds
4
Baths
4
Living area
1,933 sqft
Lot size
19,911 sqft
ZIP code
91789
City
Walnut
Street
Cornerstone Dr
Coordinates
34.01786, -117.84721
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21046 Cornerstone Dr last sell?
21046 Cornerstone Dr most recently sold on Jun 20, 2019 for $739,000.
What is the current tax assessment for 21046 Cornerstone Dr?
The most recent total assessment for 21046 Cornerstone Dr (year 2025) is $972,773 with $11,991 in property tax.
How does 21046 Cornerstone Dr's assessment compare to its last sale price?
The current assessment is 31.6% above the last sale price of $739,000.
When was 21046 Cornerstone Dr built?
21046 Cornerstone Dr was built in 2018.
How does 21046 Cornerstone Dr compare to others on Cornerstone Dr?
We track 8 other properties on Cornerstone Dr. Browse the list under "Other properties on Cornerstone Dr" to compare beds, baths, and sale history.
What are the property facts for 21046 Cornerstone Dr?
21046 Cornerstone Dr is a 4 bed, 4 bath, 1,933 sqft, 19,911 sqft lot condos.
Is 21046 Cornerstone Dr a flip candidate?
No — 21046 Cornerstone Dr does not appear in our flips dataset.
Is 21046 Cornerstone Dr a tax-appeal candidate?
No — 21046 Cornerstone Dr is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+5.8%
Implied 1-yr
+23.2%
2026 Q3
$1.76M
2026 Q4
$1.84M
ZIP 91789 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Cornerstone Dr