Coverage · California · Alameda County
Castro Valley, California: 20,724 property records and the deal signals inside them.
Public-record counts for Castro Valley in Alameda County, computed with the same signal definitions the app uses. Counts are indicators drawn from county assessor and recorder data as of 2026-07-03; they are not verified statuses.
Records on file
20,724
Absentee owners
20,724
Estate-style owners
0
Teardown signals
356
Median assessed value
$631,377
Deal signals in Castro Valley
| Signal | Records |
|---|---|
| Absentee ownersThe tax-mailing address differs from the property address. Guide | 20,724 |
| Held 10+ yearsLast recorded sale is ten or more years ago. Guide | 7,180 |
| Absentee and long-heldBoth of the above: an owner elsewhere who has held for a decade or more. Guide | 7,180 |
| Estate or probate-style ownersOwner name carries estate, executor, administrator or heir markers. Guide | 0 |
| Teardown signalImprovements assessed at half or less of the land value, land at $40,000 or more. Guide | 356 |
| Value spreadLast sale price at 75% or less of the current assessed value (assessed $50,000 or more). Guide | 0 |
| Vacant landLand value on record with no improvement value. Guide | 549 |
| Entity ownersLLC, trust, corporate or partnership owners. Guide | 0 |
Definitions are the ones Black Label Real Estate applies inside the app. A record can carry several signals. Percentages are of records on file for the city.
More places in Alameda County
- Oakland98,312
- Hayward34,046
- Livermore28,846
- Berkeley26,097
- San Leandro23,006
- Alameda19,112
- Newark11,542
- San Lorenzo7,275
- Union City7,091
- Albany4,642
- Alameda County overview
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Black Label Real Estate runs these signals on the full record set, with owner enrichment, comps, ARV and route planning in one Mac and Windows workspace.
Explore Black Label Real EstateRelated guides: Probate leads · Teardown signals · Reading parcel and owner data