21175 Elm St
Castro Valley, CA 94546
2 bd 1 ba 866 sqft Built 1948 Lot 6,642 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 | $578,120 | $247,765 | $825,885 | $10,532 |
| 2024 | $578,120 | $247,765 | $825,885 | $10,298 |
| 2023 | $555,677 | $238,147 | $793,824 | $10,135 |
| 2022 | $544,782 | $233,478 | $778,260 | $9,942 |
| 2021 | $318,165 | $136,356 | $454,521 | $6,033 |
| 2020 | $314,904 | $134,958 | $449,862 | $6,037 |
| 2019 | $308,730 | $132,312 | $441,042 | $6,110 |
| 2018 | $302,677 | $129,718 | $432,395 | $5,825 |
| 2017 | $296,743 | $127,175 | $423,918 | $6,067 |
| 2016 | $290,925 | $124,682 | $415,607 | $5,675 |
| 2015 | $286,556 | $122,809 | $409,365 | $5,042 |
| 2014 | $280,943 | $120,404 | $401,347 | $5,243 |
| 2013 | $220,500 | $94,500 | $315,000 | $3,979 |
| 2012 | $245,000 | $105,000 | $350,000 | $4,356 |
| 2010 | $245,000 | $105,000 | $350,000 | $4,371 |
| 2009 | $245,000 | $105,000 | $350,000 | $4,035 |
| 2008 | $262,201 | $112,371 | $374,572 | $4,580 |
| 2007 | $257,060 | $110,168 | $367,228 | $4,465 |
Property facts
Year built
1948
Property type
single_family
Stories
1
Beds
2
Baths
1
Living area
866 sqft
Lot size
6,642 sqft
ZIP code
94546
City
Castro Valley
Street
Elm St
Coordinates
37.69153, -122.07233
Comparable properties nearby
Frequently asked questions
When did 21175 Elm St last sell?
No public-record sale is on file for 21175 Elm St.
What is the current tax assessment for 21175 Elm St?
The most recent total assessment for 21175 Elm St (year 2025) is $825,885 with $10,532 in property tax.
When was 21175 Elm St built?
21175 Elm St was built in 1948.
How does 21175 Elm St compare to others on Elm St?
We do not currently track other properties on Elm St.
What are the property facts for 21175 Elm St?
21175 Elm St is a 2 bed, 1 bath, 866 sqft, 6,642 sqft lot single_family.
Is 21175 Elm St a flip candidate?
No — 21175 Elm St does not appear in our flips dataset.
Is 21175 Elm St a tax-appeal candidate?
No — 21175 Elm St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-2.1%
Implied 1-yr
-8.4%
2026 Q3
$875.4K
2026 Q4
$875.4K
ZIP 94546 — Median Price History + Forecast
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Geography