3731 Castle Rock Rd
Diamond Bar, CA 91765
4 bd 2 ba 1,724 sqft Built 1963 Lot 7,903 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 | $175,569 | $590,791 | $766,360 | $9,936 |
| 2024 | $175,569 | $590,791 | $766,360 | $9,437 |
| 2023 | $168,752 | $567,850 | $736,602 | $9,114 |
| 2022 | $165,444 | $556,716 | $722,160 | $8,925 |
| 2021 | $162,200 | $545,800 | $708,000 | $9,469 |
| 2020 | $125,914 | $113,305 | $239,219 | $3,277 |
| 2019 | $123,446 | $111,084 | $234,530 | $3,216 |
| 2018 | $121,026 | $108,906 | $229,932 | $3,044 |
| 2017 | $118,653 | $106,771 | $225,424 | $2,913 |
| 2016 | $116,327 | $104,678 | $221,005 | $2,817 |
| 2015 | $114,580 | $103,106 | $217,686 | $2,830 |
| 2014 | $112,336 | $101,087 | $213,423 | $2,837 |
| 2013 | $111,829 | $100,631 | $212,460 | $2,808 |
| 2012 | $109,637 | $98,658 | $208,295 | $2,796 |
| 2010 | $107,488 | $96,724 | $204,212 | $2,690 |
| 2009 | $106,685 | $96,002 | $202,687 | $2,671 |
| 2008 | $104,843 | $94,345 | $199,188 | $2,592 |
| 2007 | $102,788 | $92,496 | $195,284 | $2,454 |
Property facts
Year built
1963
Property type
single_family
Stories
2
Beds
4
Baths
2
Living area
1,724 sqft
Lot size
7,903 sqft
ZIP code
91765
City
Diamond Bar
Street
Castle Rock Rd
Coordinates
33.96250, -117.85190
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 3731 Castle Rock Rd last sell?
No public-record sale is on file for 3731 Castle Rock Rd.
What is the current tax assessment for 3731 Castle Rock Rd?
The most recent total assessment for 3731 Castle Rock Rd (year 2025) is $766,360 with $9,936 in property tax.
When was 3731 Castle Rock Rd built?
3731 Castle Rock Rd was built in 1963.
How does 3731 Castle Rock Rd compare to others on Castle Rock Rd?
We track 8 other properties on Castle Rock Rd. Browse the list under "Other properties on Castle Rock Rd" to compare beds, baths, and sale history.
What are the property facts for 3731 Castle Rock Rd?
3731 Castle Rock Rd is a 4 bed, 2 bath, 1,724 sqft, 7,903 sqft lot single_family.
Is 3731 Castle Rock Rd a flip candidate?
No — 3731 Castle Rock Rd does not appear in our flips dataset.
Is 3731 Castle Rock Rd a tax-appeal candidate?
No — 3731 Castle Rock Rd 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
Other properties on Castle Rock Rd