18819 Sydney Cir
Castro Valley, CA 94546
4 bd 3 ba 1,901 sqft Built 1991 Lot 3,626 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 | $504,250 | $216,107 | $720,357 | $9,287 |
| 2024 | $504,250 | $216,107 | $720,357 | $9,078 |
| 2023 | $484,671 | $207,716 | $692,387 | $8,931 |
| 2022 | $475,171 | $203,644 | $678,815 | $8,758 |
| 2021 | $465,855 | $199,652 | $665,507 | $8,533 |
| 2020 | $461,080 | $197,605 | $658,685 | $8,338 |
| 2019 | $452,042 | $193,732 | $645,774 | $8,490 |
| 2018 | $443,181 | $189,934 | $633,115 | $8,249 |
| 2017 | $434,491 | $186,210 | $620,701 | $8,032 |
| 2016 | $425,974 | $182,560 | $608,534 | $7,643 |
| 2015 | $419,577 | $179,819 | $599,396 | $7,143 |
| 2014 | $411,359 | $176,296 | $587,655 | $7,059 |
| 2013 | $385,000 | $165,000 | $550,000 | $6,694 |
| 2012 | $364,000 | $156,000 | $520,000 | $6,345 |
| 2010 | $382,200 | $163,800 | $546,000 | $6,909 |
| 2009 | $396,900 | $170,100 | $567,000 | $6,812 |
| 2008 | $245,725 | $105,310 | $351,035 | $4,313 |
| 2007 | $240,907 | $103,246 | $344,153 | $4,204 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
1,901 sqft
Lot size
3,626 sqft
ZIP code
94546
City
Castro Valley
Street
Sydney Cir
Coordinates
37.70746, -122.09999
Comparable properties nearby
Frequently asked questions
When did 18819 Sydney Cir last sell?
No public-record sale is on file for 18819 Sydney Cir.
What is the current tax assessment for 18819 Sydney Cir?
The most recent total assessment for 18819 Sydney Cir (year 2025) is $720,357 with $9,287 in property tax.
When was 18819 Sydney Cir built?
18819 Sydney Cir was built in 1991.
How does 18819 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 18819 Sydney Cir?
18819 Sydney Cir is a 4 bed, 3 bath, 1,901 sqft, 3,626 sqft lot single_family.
Is 18819 Sydney Cir a flip candidate?
No — 18819 Sydney Cir does not appear in our flips dataset.
Is 18819 Sydney Cir a tax-appeal candidate?
No — 18819 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