21454 Knuppe Pl
Castro Valley, CA 94552
4 bd 4 ba 3,993 sqft Built 1991 Lot 108,029 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 | $944,223 | $857,013 | $1,801,236 | $22,127 |
| 2024 | $944,223 | $857,013 | $1,801,236 | $21,659 |
| 2023 | $823,742 | $823,742 | $1,647,484 | $20,355 |
| 2022 | $807,592 | $807,592 | $1,615,184 | $19,995 |
| 2021 | $791,763 | $791,763 | $1,583,526 | $19,496 |
| 2020 | $783,645 | $783,645 | $1,567,290 | $19,056 |
| 2019 | $768,286 | $768,286 | $1,536,572 | $19,428 |
| 2018 | $753,226 | $753,226 | $1,506,452 | $18,884 |
| 2017 | $738,460 | $738,460 | $1,476,920 | $18,395 |
| 2016 | $723,981 | $723,981 | $1,447,962 | $17,507 |
| 2015 | $800,000 | $500,000 | $1,300,000 | $14,968 |
| 2014 | $910,000 | $390,000 | $1,300,000 | $15,118 |
| 2013 | $833,000 | $357,000 | $1,190,000 | $13,876 |
| 2012 | $815,500 | $349,500 | $1,165,000 | $13,596 |
| 2010 | $815,500 | $349,500 | $1,165,000 | $13,687 |
| 2009 | $815,500 | $349,500 | $1,165,000 | $15,627 |
| 2008 | $686,600 | $350,166 | $1,036,766 | $12,094 |
| 2007 | $673,140 | $343,301 | $1,016,441 | $11,798 |
Property facts
Year built
1991
Property type
single_family
Stories
2
Beds
4
Baths
4
Living area
3,993 sqft
Lot size
108,029 sqft
ZIP code
94552
City
Castro Valley
Street
Knuppe Pl
Coordinates
37.70506, -122.03455
Comparable properties nearby
Frequently asked questions
When did 21454 Knuppe Pl last sell?
No public-record sale is on file for 21454 Knuppe Pl.
What is the current tax assessment for 21454 Knuppe Pl?
The most recent total assessment for 21454 Knuppe Pl (year 2025) is $1,801,236 with $22,127 in property tax.
When was 21454 Knuppe Pl built?
21454 Knuppe Pl was built in 1991.
How does 21454 Knuppe Pl compare to others on Knuppe Pl?
We do not currently track other properties on Knuppe Pl.
What are the property facts for 21454 Knuppe Pl?
21454 Knuppe Pl is a 4 bed, 4 bath, 3,993 sqft, 108,029 sqft lot single_family.
Is 21454 Knuppe Pl a flip candidate?
No — 21454 Knuppe Pl does not appear in our flips dataset.
Is 21454 Knuppe Pl a tax-appeal candidate?
No — 21454 Knuppe Pl is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+8.0%
Implied 1-yr
+31.8%
2026 Q1
$3.7M
2026 Q2
$3.7M
ZIP 94552 — Median Price History + Forecast
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Geography