21561 Knoll Way
Castro Valley, CA 94546
4 bd 4 ba 3,009 sqft Built 1957 Lot 10,010 sqft single_family
Most recent sale
$1,258,000
Jul 26, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| Jul 26, 2022 | Sold | $1,258,000 | MLS #40996941 |
| Jun 23, 2022 | Price changed | $1,299,000 | MLS #40996941 |
| Jun 9, 2022 | Listed | $1,399,000 | MLS #40996941 |
| Dec 28, 2020 | Sold | $1,150,000 | MLS #ML81822361 |
| Dec 5, 2020 | Listed | $1,058,000 | MLS #ML81822361 |
| Dec 4, 2020 | Listed | $1,058,000 | MLS #40931000 |
| Apr 24, 2012 | Listed | $798,000 | MLS #81215199 |
| Apr 19, 2012 | Listed | $798,000 | MLS #40571270 |
| Oct 14, 1998 | Sold | $295,000 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $1,009,916 | $392,646 | $1,402,562 | $18,192 |
| 2024 | $1,009,916 | $392,646 | $1,402,562 | $17,213 |
| 2023 | $880,600 | $377,400 | $1,258,000 | $15,806 |
| 2022 | $765,000 | $408,000 | $1,173,000 | $14,753 |
| 2021 | $750,000 | $400,000 | $1,150,000 | $14,607 |
| 2020 | $295,999 | $126,856 | $422,855 | $5,735 |
| 2019 | $290,196 | $124,369 | $414,565 | $5,755 |
| 2018 | $284,507 | $121,931 | $406,438 | $5,405 |
| 2017 | $278,929 | $119,541 | $398,470 | $5,270 |
| 2016 | $273,461 | $117,197 | $390,658 | $4,965 |
| 2015 | $269,354 | $115,437 | $384,791 | $4,856 |
| 2014 | $264,078 | $113,176 | $377,254 | $4,621 |
| 2013 | $262,886 | $112,665 | $375,551 | $4,579 |
| 2012 | $257,732 | $110,456 | $368,188 | $4,497 |
| 2010 | $250,792 | $107,482 | $358,274 | $4,327 |
| 2009 | $250,792 | $107,482 | $358,274 | $4,398 |
| 2008 | $246,459 | $105,625 | $352,084 | $4,240 |
| 2007 | $241,627 | $103,554 | $345,181 | $3,953 |
Property facts
Year built
1957
Property type
single_family
Stories
2
Beds
4
Baths
4
Living area
3,009 sqft
Lot size
10,010 sqft
ZIP code
94546
City
Castro Valley
Street
Knoll Way
Coordinates
37.68438, -122.08743
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$9,629
Gross rental yield
9.19%
Implied cap rate
5.97%
Trend-extrapolated value
—
Frequently asked questions
When did 21561 Knoll Way last sell?
21561 Knoll Way most recently sold on Jul 26, 2022 for $1,258,000.
What is the current tax assessment for 21561 Knoll Way?
The most recent total assessment for 21561 Knoll Way (year 2025) is $1,402,562 with $18,192 in property tax.
How does 21561 Knoll Way's assessment compare to its last sale price?
The current assessment is 11.5% above the last sale price of $1,258,000.
When was 21561 Knoll Way built?
21561 Knoll Way was built in 1957.
How does 21561 Knoll Way compare to others on Knoll Way?
We track 5 other properties on Knoll Way. Browse the list under "Other properties on Knoll Way" to compare beds, baths, and sale history.
What are the property facts for 21561 Knoll Way?
21561 Knoll Way is a 4 bed, 4 bath, 3,009 sqft, 10,010 sqft lot single_family.
Is 21561 Knoll Way a flip candidate?
No — 21561 Knoll Way does not appear in our flips dataset.
Is 21561 Knoll Way a tax-appeal candidate?
No — 21561 Knoll Way 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 Knoll Way