21438 Running River Ct
Diamond Bar, CA 91765
5 bd 3 ba 2,334 sqft Built 1977 Lot 13,078 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $291,638 | $577,948 | $869,586 | $11,189 |
| 2024 | $291,638 | $577,948 | $869,586 | $10,564 |
| 2023 | $280,314 | $555,506 | $835,820 | $10,311 |
| 2022 | $228,000 | $544,614 | $772,614 | $9,561 |
| 2021 | $223,530 | $533,936 | $757,466 | $9,303 |
| 2020 | $221,238 | $528,462 | $749,700 | $9,184 |
| 2019 | $335,000 | $400,000 | $735,000 | $9,087 |
| 2018 | $119,779 | $30,428 | $150,207 | $2,202 |
| 2017 | $117,431 | $29,832 | $147,263 | $2,114 |
| 2016 | $115,129 | $29,248 | $144,377 | $2,032 |
| 2015 | $113,400 | $28,809 | $142,209 | $2,039 |
| 2014 | $111,179 | $28,245 | $139,424 | $2,049 |
| 2013 | $110,677 | $28,118 | $138,795 | $2,025 |
| 2012 | $108,507 | $27,567 | $136,074 | $2,015 |
| 2010 | $106,380 | $27,027 | $133,407 | $1,937 |
| 2009 | $105,585 | $26,826 | $132,411 | $1,915 |
| 2008 | $103,761 | $26,363 | $130,124 | $1,856 |
| 2007 | $101,727 | $25,847 | $127,574 | $1,752 |
Property facts
Year built
1977
Property type
single_family
Stories
2
Beds
5
Baths
3
Living area
2,334 sqft
Lot size
13,078 sqft
ZIP code
91765
City
Diamond Bar
Street
Running River Ct
Coordinates
33.98837, -117.83658
Comparable properties nearby
Frequently asked questions
When did 21438 Running River Ct last sell?
No public-record sale is on file for 21438 Running River Ct.
What is the current tax assessment for 21438 Running River Ct?
The most recent total assessment for 21438 Running River Ct (year 2025) is $869,586 with $11,189 in property tax.
When was 21438 Running River Ct built?
21438 Running River Ct was built in 1977.
How does 21438 Running River Ct compare to others on Running River Ct?
We track 1 other property on Running River Ct. Browse the list under "Other properties on Running River Ct" to compare beds, baths, and sale history.
What are the property facts for 21438 Running River Ct?
21438 Running River Ct is a 5 bed, 3 bath, 2,334 sqft, 13,078 sqft lot single_family.
Is 21438 Running River Ct a flip candidate?
No — 21438 Running River Ct does not appear in our flips dataset.
Is 21438 Running River Ct a tax-appeal candidate?
No — 21438 Running River Ct is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.0%
Implied 1-yr
+4.1%
2026 Q3
$1.43M
2026 Q4
$1.44M
ZIP 91765 — Median Price History + Forecast
Explore nearby
Geography
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