521 San Antonio Ave
Ontario, CA 91762
3 bd 1 ba 1,087 sqft Built 1952 Lot 10,125 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 | $282,894 | $152,328 | $435,222 | $4,787 |
| 2024 | $282,894 | $152,328 | $435,222 | $4,679 |
| 2023 | $271,909 | $146,413 | $418,322 | $4,547 |
| 2022 | $266,577 | $143,542 | $410,119 | $4,487 |
| 2021 | $261,350 | $140,727 | $402,077 | $4,459 |
| 2020 | $258,670 | $139,284 | $397,954 | $4,381 |
| 2019 | $253,598 | $136,553 | $390,151 | $4,344 |
| 2018 | $248,625 | $133,875 | $382,500 | $4,284 |
| 2017 | $147,901 | $77,857 | $225,758 | $2,418 |
| 2016 | $145,001 | $76,330 | $221,331 | $2,321 |
| 2015 | $142,823 | $75,183 | $218,006 | $2,304 |
| 2014 | $140,025 | $73,710 | $213,735 | $2,231 |
| 2013 | $139,392 | $73,377 | $212,769 | $2,253 |
| 2012 | $136,659 | $71,938 | $208,597 | $2,140 |
| 2011 | $133,979 | $70,527 | $204,506 | $2,127 |
| 2010 | $130,000 | $70,000 | $200,000 | $2,150 |
| 2009 | $97,512 | $68,832 | $166,344 | $1,711 |
| 2008 | $95,600 | $67,482 | $163,082 | $1,681 |
| 2007 | $93,725 | $66,159 | $159,884 | $1,628 |
Property facts
Year built
1952
Property type
single_family
Stories
1
Beds
3
Baths
1
Living area
1,087 sqft
Lot size
10,125 sqft
ZIP code
91762
City
Ontario
Street
San Antonio Ave
Coordinates
34.06935, -117.66099
Comparable properties nearby
Frequently asked questions
When did 521 San Antonio Ave last sell?
No public-record sale is on file for 521 San Antonio Ave.
What is the current tax assessment for 521 San Antonio Ave?
The most recent total assessment for 521 San Antonio Ave (year 2025) is $435,222 with $4,787 in property tax.
When was 521 San Antonio Ave built?
521 San Antonio Ave was built in 1952.
How does 521 San Antonio Ave compare to others on San Antonio Ave?
We track 8 other properties on San Antonio Ave. Browse the list under "Other properties on San Antonio Ave" to compare beds, baths, and sale history.
What are the property facts for 521 San Antonio Ave?
521 San Antonio Ave is a 3 bed, 1 bath, 1,087 sqft, 10,125 sqft lot single_family.
Is 521 San Antonio Ave a flip candidate?
No — 521 San Antonio Ave does not appear in our flips dataset.
Is 521 San Antonio Ave a tax-appeal candidate?
No — 521 San Antonio 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 San Antonio Ave