21209 Cottonwood Ln
Diamond Bar, CA 91789
3 bd 3 ba 1,578 sqft Built 1985 Lot 1,514 sqft townhomes
Most recent sale
$725,000
Jun 23, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jun 23, 2022 | Sold | $725,000 | MLS #TR22094563 |
| May 6, 2022 | Listed | $699,000 | MLS #TR22094563 |
| Feb 9, 2022 | Listed for rent | $2,700 | CRMLS |
| Jul 27, 2020 | Listing removed | $2,400 | CRMLS |
| Jun 18, 2019 | Sold | $522,000 | MLS #TR19067453 |
| Mar 28, 2019 | Listing removed | $529,000 | CRMLS |
| Mar 27, 2019 | Listed | $529,000 | MLS #TR19067453 |
| Mar 4, 2019 | Price changed | $529,000 | MLS #TR18271747 |
| Mar 1, 2019 | Relisted | $499,999 | MLS #TR18271747 |
| Jan 3, 2019 | Relisted | $529,000 | MLS #TR18271747 |
| Nov 13, 2018 | Listed | $529,000 | MLS #TR18271747 |
| Apr 8, 2014 | Listing removed | $458,000 | CRMLS |
| Apr 3, 2014 | Sold | $438,000 | Public Record |
| Feb 10, 2014 | Listed | $458,000 | MLS #TR14028277 |
| Jul 9, 2013 | Listing removed | $448,000 | CRMLS |
| Apr 1, 2013 | Listed | $448,000 | MLS #CV13056015 |
| Oct 3, 2005 | Sold | $473,000 | MLS #C510285 |
| Jun 23, 2005 | Listed | $498,000 | MLS #C510285 |
| May 25, 2005 | Sold | $390,500 | Public Record |
| Mar 30, 2005 | Listing removed | $410,000 | ITECH |
| Feb 2, 2005 | Listed | $410,000 | MLS #A500560 |
| Feb 1, 2005 | Listed | $410,000 | MLS #A500535 |
| Jan 28, 2005 | Listing removed | $410,000 | ITECH |
| Jan 2, 2005 | Listed | $410,000 | MLS #A500003 |
| Dec 30, 2004 | Listing removed | $410,000 | ITECH |
| Nov 9, 2004 | Listed | $410,000 | MLS #A407304 |
| Nov 9, 2004 | Listing removed | $410,000 | ITECH |
| Jul 23, 2004 | Listed | $410,000 | MLS #A404618 |
| Sep 11, 1990 | Sold | $152,000 | Public Record |
| Jul 17, 1987 | Sold | $122,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $153,875 | $615,500 | $769,375 | $9,657 |
| 2024 | $153,875 | $615,500 | $769,375 | $9,226 |
| 2023 | $147,900 | $591,600 | $739,500 | $9,003 |
| 2022 | $109,742 | $438,971 | $548,713 | $6,791 |
| 2021 | $107,591 | $430,364 | $537,955 | $6,664 |
| 2020 | $106,488 | $425,952 | $532,440 | $6,574 |
| 2019 | $103,846 | $377,477 | $481,323 | $461 |
| 2018 | $101,810 | $370,076 | $471,886 | $5,781 |
| 2017 | $99,814 | $362,820 | $462,634 | $5,517 |
| 2016 | $97,857 | $355,706 | $453,563 | $5,355 |
| 2015 | $96,388 | $350,363 | $446,751 | $5,387 |
| 2014 | $134,400 | $212,800 | $347,200 | $4,278 |
| 2013 | $134,400 | $212,800 | $347,200 | $4,258 |
| 2012 | $113,000 | $179,000 | $292,000 | $3,683 |
| 2010 | $129,400 | $205,100 | $334,500 | $4,125 |
| 2009 | $129,400 | $205,100 | $334,500 | $4,102 |
| 2008 | $170,300 | $269,900 | $440,200 | $5,270 |
| 2007 | $186,660 | $295,800 | $482,460 | $5,564 |
Property facts
Year built
1985
Property type
townhomes
Stories
2
Beds
3
Baths
3
Living area
1,578 sqft
Lot size
1,514 sqft
ZIP code
91789
City
Diamond Bar
Street
Cottonwood Ln
Coordinates
34.00678, -117.84138
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsInvestment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$5,050
Gross rental yield
8.36%
Implied cap rate
5.43%
Trend-extrapolated value
—
Frequently asked questions
When did 21209 Cottonwood Ln last sell?
21209 Cottonwood Ln most recently sold on Jun 23, 2022 for $725,000.
What is the current tax assessment for 21209 Cottonwood Ln?
The most recent total assessment for 21209 Cottonwood Ln (year 2025) is $769,375 with $9,657 in property tax.
How does 21209 Cottonwood Ln's assessment compare to its last sale price?
The current assessment is 6.1% above the last sale price of $725,000.
When was 21209 Cottonwood Ln built?
21209 Cottonwood Ln was built in 1985.
How does 21209 Cottonwood Ln compare to others on Cottonwood Ln?
We track 3 other properties on Cottonwood Ln. Browse the list under "Other properties on Cottonwood Ln" to compare beds, baths, and sale history.
What are the property facts for 21209 Cottonwood Ln?
21209 Cottonwood Ln is a 3 bed, 3 bath, 1,578 sqft, 1,514 sqft lot townhomes.
Is 21209 Cottonwood Ln a flip candidate?
No — 21209 Cottonwood Ln does not appear in our flips dataset.
Is 21209 Cottonwood Ln a tax-appeal candidate?
No — 21209 Cottonwood Ln is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+2.3%
Implied 1-yr
+9.0%
2026 Q3
$1.61M
2026 Q4
$1.64M
ZIP 91789 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Cottonwood Ln