20439 Blue Mountain Dr
Walnut, CA 91789
3 bd 2 ba 1,971 sqft Built 1965 Lot 11,800 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 | $282,438 | $788,562 | $1,071,000 | $13,549 |
| 2024 | $282,438 | $788,562 | $1,071,000 | $12,953 |
| 2023 | $150,858 | $603,432 | $754,290 | $9,380 |
| 2022 | $147,900 | $591,600 | $739,500 | $9,189 |
| 2021 | $145,000 | $580,000 | $725,000 | $9,020 |
| 2020 | $78,208 | $23,505 | $101,713 | $1,764 |
| 2019 | $76,675 | $23,045 | $99,720 | $1,734 |
| 2018 | $75,172 | $22,594 | $97,766 | $1,564 |
| 2017 | $73,699 | $22,151 | $95,850 | $1,507 |
| 2016 | $72,254 | $21,717 | $93,971 | $1,446 |
| 2015 | $71,169 | $21,391 | $92,560 | $1,449 |
| 2014 | $69,775 | $20,972 | $90,747 | $1,459 |
| 2013 | $69,460 | $20,878 | $90,338 | $1,439 |
| 2012 | $68,099 | $20,469 | $88,568 | $1,429 |
| 2010 | $66,764 | $20,068 | $86,832 | $1,370 |
| 2009 | $66,266 | $19,919 | $86,185 | $1,348 |
| 2008 | $65,122 | $19,576 | $84,698 | $1,303 |
| 2007 | $63,846 | $19,193 | $83,039 | $1,228 |
Property facts
Year built
1965
Property type
single_family
Stories
1
Beds
3
Baths
2
Living area
1,971 sqft
Lot size
11,800 sqft
ZIP code
91789
City
Walnut
Street
Blue Mountain Dr
Coordinates
34.05224, -117.85694
Comparable properties nearby
Frequently asked questions
When did 20439 Blue Mountain Dr last sell?
No public-record sale is on file for 20439 Blue Mountain Dr.
What is the current tax assessment for 20439 Blue Mountain Dr?
The most recent total assessment for 20439 Blue Mountain Dr (year 2025) is $1,071,000 with $13,549 in property tax.
When was 20439 Blue Mountain Dr built?
20439 Blue Mountain Dr was built in 1965.
How does 20439 Blue Mountain Dr compare to others on Blue Mountain Dr?
We track 1 other property on Blue Mountain Dr. Browse the list under "Other properties on Blue Mountain Dr" to compare beds, baths, and sale history.
What are the property facts for 20439 Blue Mountain Dr?
20439 Blue Mountain Dr is a 3 bed, 2 bath, 1,971 sqft, 11,800 sqft lot single_family.
Is 20439 Blue Mountain Dr a flip candidate?
No — 20439 Blue Mountain Dr does not appear in our flips dataset.
Is 20439 Blue Mountain Dr a tax-appeal candidate?
No — 20439 Blue Mountain 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
+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 Blue Mountain Dr