521 Westside Ave
Sunnyvale, CA 94087
4 bd 2 ba 2,425 sqft Built 1994 Lot 4,840 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 | $339,924 | $339,924 | $679,848 | $8,229 |
| 2024 | $339,924 | $339,924 | $679,848 | $7,937 |
| 2023 | $326,725 | $326,725 | $653,450 | $7,845 |
| 2022 | $320,319 | $320,319 | $640,638 | $7,700 |
| 2021 | $314,039 | $314,039 | $628,078 | $7,540 |
| 2020 | $310,819 | $310,819 | $621,638 | $7,444 |
| 2019 | $304,725 | $304,725 | $609,450 | $7,279 |
| 2018 | $298,750 | $298,750 | $597,500 | $7,134 |
| 2017 | $292,893 | $292,893 | $585,786 | $7,042 |
| 2016 | $287,150 | $287,150 | $574,300 | $6,749 |
| 2015 | $282,837 | $282,837 | $565,674 | $6,788 |
| 2014 | $277,297 | $277,297 | $554,594 | $6,654 |
| 2013 | $276,044 | $276,044 | $552,088 | $6,538 |
| 2012 | $270,632 | $270,632 | $541,264 | $6,415 |
| 2010 | $265,326 | $265,326 | $530,652 | $6,227 |
| 2009 | $263,344 | $263,344 | $526,688 | $6,158 |
| 2008 | $258,795 | $258,795 | $517,590 | $5,921 |
| 2007 | $253,721 | $253,721 | $507,442 | $5,764 |
Property facts
Year built
1994
Property type
single_family
Stories
2
Beds
4
Baths
2
Living area
2,425 sqft
Lot size
4,840 sqft
ZIP code
94087
City
Sunnyvale
Street
Westside Ave
Coordinates
37.35548, -122.03330
Comparable properties nearby
Frequently asked questions
When did 521 Westside Ave last sell?
No public-record sale is on file for 521 Westside Ave.
What is the current tax assessment for 521 Westside Ave?
The most recent total assessment for 521 Westside Ave (year 2025) is $679,848 with $8,229 in property tax.
When was 521 Westside Ave built?
521 Westside Ave was built in 1994.
How does 521 Westside Ave compare to others on Westside Ave?
We track 2 other properties on Westside Ave. Browse the list under "Other properties on Westside Ave" to compare beds, baths, and sale history.
What are the property facts for 521 Westside Ave?
521 Westside Ave is a 4 bed, 2 bath, 2,425 sqft, 4,840 sqft lot single_family.
Is 521 Westside Ave a flip candidate?
No — 521 Westside Ave does not appear in our flips dataset.
Is 521 Westside Ave a tax-appeal candidate?
No — 521 Westside 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
-0.2%
Implied 1-yr
-0.9%
2026 Q3
$2.25M
2026 Q4
$2.25M
ZIP 94087 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Westside Ave