621 Mountain Ave
Ontario, CA 91762
— ba other
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 | — | $3,656,700 | $3,656,700 | $40,047 |
| 2024 | — | $3,656,700 | $3,656,700 | $39,138 |
| 2023 | — | $2,301,482 | $2,301,482 | $24,913 |
| 2022 | $117,300 | $2,256,355 | $2,373,655 | $25,905 |
| 2021 | $48,742 | $57,756 | $106,498 | $1,235 |
| 2020 | $48,242 | $57,164 | $105,406 | $1,214 |
| 2019 | $47,296 | $56,043 | $103,339 | $1,204 |
| 2018 | $46,369 | $54,944 | $101,313 | $1,187 |
| 2017 | $45,460 | $53,867 | $99,327 | $1,145 |
| 2016 | $44,569 | $52,811 | $97,380 | $1,102 |
| 2015 | $43,900 | $52,018 | $95,918 | $1,094 |
| 2014 | $43,040 | $50,999 | $94,039 | $1,059 |
| 2013 | $42,845 | $50,769 | $93,614 | $1,067 |
| 2012 | $42,005 | $49,774 | $91,779 | $1,015 |
| 2011 | $41,181 | $48,798 | $89,979 | $1,010 |
| 2010 | $40,873 | $48,433 | $89,306 | $1,001 |
| 2009 | $40,970 | $48,548 | $89,518 | $1,000 |
| 2008 | $40,167 | $47,596 | $87,763 | $984 |
| 2007 | $39,379 | $46,663 | $86,042 | $955 |
Property facts
Year built
—
Property type
other
Stories
—
Beds
—
Baths
—
Living area
—
Lot size
—
ZIP code
91762
City
Ontario
Street
Mountain Ave
Coordinates
34.05763, -117.66927
Frequently asked questions
When did 621 Mountain Ave last sell?
No public-record sale is on file for 621 Mountain Ave.
What is the current tax assessment for 621 Mountain Ave?
The most recent total assessment for 621 Mountain Ave (year 2025) is $3,656,700 with $40,047 in property tax.
When was 621 Mountain Ave built?
The year built for 621 Mountain Ave is not in our records.
How does 621 Mountain Ave compare to others on Mountain Ave?
We track 8 other properties on Mountain Ave. Browse the list under "Other properties on Mountain Ave" to compare beds, baths, and sale history.
What are the property facts for 621 Mountain Ave?
621 Mountain Ave is a — bath other.
Is 621 Mountain Ave a flip candidate?
No — 621 Mountain Ave does not appear in our flips dataset.
Is 621 Mountain Ave a tax-appeal candidate?
No — 621 Mountain Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-2.2%
Implied 1-yr
-8.6%
2026 Q3
$595.1K
2026 Q4
$580.2K
ZIP 91762 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Mountain Ave