820 Castor St
Foster City, CA 94404
4 bd 3 ba 1,960 sqft Built 1967 Lot 6,460 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 | $656,186 | $1,327,465 | $1,983,651 | $23,165 |
| 2024 | $656,186 | $1,327,465 | $1,983,651 | $22,834 |
| 2023 | $630,706 | $1,275,919 | $1,906,625 | $22,361 |
| 2022 | $618,340 | $1,250,901 | $1,869,241 | $22,076 |
| 2021 | $606,216 | $1,226,374 | $1,832,590 | $21,797 |
| 2020 | $600,000 | $1,213,800 | $1,813,800 | $21,196 |
| 2019 | $544,495 | $544,495 | $1,088,990 | $12,434 |
| 2018 | $533,819 | $533,819 | $1,067,638 | $11,919 |
| 2017 | $523,352 | $523,352 | $1,046,704 | $11,785 |
| 2016 | $513,091 | $513,091 | $1,026,182 | $11,747 |
| 2015 | $505,384 | $505,384 | $1,010,768 | $11,474 |
| 2014 | $495,485 | $495,485 | $990,970 | $11,182 |
| 2013 | $493,246 | $493,246 | $986,492 | $11,078 |
| 2012 | $483,575 | $483,575 | $967,150 | $10,805 |
| 2011 | $474,094 | $474,094 | $948,188 | $10,605 |
| 2010 | $470,551 | $470,551 | $941,102 | $10,455 |
| 2009 | $471,669 | $471,669 | $943,338 | $10,320 |
| 2008 | $462,421 | $462,421 | $924,842 | $10,075 |
| 2007 | $453,354 | $453,354 | $906,708 | $9,761 |
Property facts
Year built
1967
Property type
single_family
Stories
2
Beds
4
Baths
3
Living area
1,960 sqft
Lot size
6,460 sqft
ZIP code
94404
City
Foster City
Street
Castor St
Coordinates
37.54589, -122.27520
Comparable properties nearby
Frequently asked questions
When did 820 Castor St last sell?
No public-record sale is on file for 820 Castor St.
What is the current tax assessment for 820 Castor St?
The most recent total assessment for 820 Castor St (year 2025) is $1,983,651 with $23,165 in property tax.
When was 820 Castor St built?
820 Castor St was built in 1967.
How does 820 Castor St compare to others on Castor St?
We do not currently track other properties on Castor St.
What are the property facts for 820 Castor St?
820 Castor St is a 4 bed, 3 bath, 1,960 sqft, 6,460 sqft lot single_family.
Is 820 Castor St a flip candidate?
No — 820 Castor St does not appear in our flips dataset.
Is 820 Castor St a tax-appeal candidate?
No — 820 Castor 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
-4.3%
Implied 1-yr
-17.2%
2026 Q3
$1.1M
2026 Q4
$1.1M
ZIP 94404 — Median Price History + Forecast
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Geography