18789 Sydney Cir
Castro Valley, CA 94546
4 bd 3 ba 1,914 sqft Built 1991 Lot 3,748 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 | $219,478 | $341,084 | $560,562 | $7,401 |
| 2024 | $219,478 | $341,084 | $560,562 | $7,231 |
| 2023 | $210,956 | $327,840 | $538,796 | $7,108 |
| 2022 | $206,820 | $321,413 | $528,233 | $6,965 |
| 2021 | $202,765 | $315,111 | $517,876 | $6,784 |
| 2020 | $200,687 | $311,881 | $512,568 | $6,628 |
| 2019 | $196,753 | $305,767 | $502,520 | $6,745 |
| 2018 | $192,896 | $299,773 | $492,669 | $6,553 |
| 2017 | $189,114 | $293,896 | $483,010 | $6,380 |
| 2016 | $185,406 | $288,133 | $473,539 | $6,070 |
| 2015 | $182,622 | $283,806 | $466,428 | $5,673 |
| 2014 | $179,045 | $278,248 | $457,293 | $5,599 |
| 2013 | $178,236 | $276,991 | $455,227 | $5,552 |
| 2012 | $174,742 | $271,560 | $446,302 | $5,438 |
| 2010 | $171,315 | $266,236 | $437,551 | $5,326 |
| 2009 | $170,035 | $264,246 | $434,281 | $5,347 |
| 2008 | $167,098 | $259,682 | $426,780 | $5,173 |
| 2007 | $163,822 | $254,591 | $418,413 | $5,043 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
1,914 sqft
Lot size
3,748 sqft
ZIP code
94546
City
Castro Valley
Street
Sydney Cir
Coordinates
37.70783, -122.10038
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 18789 Sydney Cir last sell?
No public-record sale is on file for 18789 Sydney Cir.
What is the current tax assessment for 18789 Sydney Cir?
The most recent total assessment for 18789 Sydney Cir (year 2025) is $560,562 with $7,401 in property tax.
When was 18789 Sydney Cir built?
18789 Sydney Cir was built in 1991.
How does 18789 Sydney Cir compare to others on Sydney Cir?
We track 5 other properties on Sydney Cir. Browse the list under "Other properties on Sydney Cir" to compare beds, baths, and sale history.
What are the property facts for 18789 Sydney Cir?
18789 Sydney Cir is a 4 bed, 3 bath, 1,914 sqft, 3,748 sqft lot single_family.
Is 18789 Sydney Cir a flip candidate?
No — 18789 Sydney Cir does not appear in our flips dataset.
Is 18789 Sydney Cir a tax-appeal candidate?
No — 18789 Sydney Cir 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
Explore nearby
Geography
Other properties on Sydney Cir