Alameda County  »  21991 Idena Ave

21991 Idena Avenue, Castro Valley, CA 94546 Property Information

21991 Idena Avenue, Castro Valley, CA 94546 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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21991 Idena Avenue, Castro Valley, CA 94546
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Address

Primary address 21991 Idena Avenue, Castro Valley
Zip code 94546
County Alameda
Parcel ID 416-10-3

Sales & Tax Overview for 21991 Idena Avenue, Castro Valley

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Sale date 04/20/1994
Sale price $500,000
Arm's length
Property tax $9,939

Lot & Building Information for 21991 Idena Avenue, Castro Valley

Building sqft 6,980
Building class Multiple Residential Building of 5 or More Units (7700)
Acreage 0.44
Units 7
Stories 2
Construction type Wood/wood and steel frames
Elevator
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Zoning, Use & Area Overview

Walk Score
Transit Score
Bike Score


Zoning district
School district Hayward Unif SCH

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Other Property Data for 21991 Idena Avenue, Castro Valley

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About 21991 Idena Avenue, Castro Valley

How many square feet does 21991 Idena Avenue, Castro Valley, CA 94546 have?

This Multiple Residential Building of 5 or More Units (7700) located at 21991 Idena Avenue, Castro Valley, CA 94546 has a total of 6,980 square feet.

What is the assessed value of 21991 Idena Avenue, Castro Valley, CA 94546 and the property tax paid?

Assessed at $847,760, the tax amount paid for 21991 Idena Avenue, Castro Valley, CA 94546 is $9,939.

When was 21991 Idena Avenue, Castro Valley, CA 94546 last sold?

21991 Idena Avenue, Castro Valley, CA 94546 was last sold in 04/26/1994.

How many residential units does this building have?

This building has 7 residential unit(s).

Ownership Information

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Real Estate Reports:
Laura Pop-Badiu, May 07, 2026 Locked-In Owners, Mobile Renters: Homeowners Stay Put as Renters Move 3.7x More Across Largest U.S. Cities 
Renters became the primary drivers of long-distance mobility across the largest U.S. cities, moving 3.7 times more than owners in 2024, as high mortgage rates and housing costs kept many homeowners in place.
Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.
Eliza Theiss, Apr 15, 2026 2026 Q1 Foreclosure Report: Brooklyn Filings Fall Sharply, Bronx & Staten Island Hit New Peaks
Behind a deceptively mild citywide downtick, borough foreclosure markets pulled into significantly diverging paths as Brooklyn cases were nearly halved and the Bronx hit a new, record high. Meanwhile, Queens remained unchanged, Staten Island surged back up and Manhattan cooled slowly.
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Past Sales & Property History for 21991 Idena Avenue, Castro Valley

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Purchase date Purchase price Buyer name Seller name
04/20/1994 $500,000

Title Documents for 21991 Idena Avenue, Castro Valley

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Date Type Amount Party 1 Party 2 Maturity Document Doc image
04/26/1994 Deed
04/20/1994 Deed
06/08/1992 Deed
               
               
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R: Recorded date
D: Document date

Property Taxes for 21991 Idena Avenue, Castro Valley

Access detailed property tax data for 21991 Idena Avenue, Castro Valley, CA 94546. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax $9,939
Market value $847,760

Assessment History for 21991 Idena Avenue, Castro Valley

Here's the assessment & property tax history for 21991 Idena Avenue, Castro Valley, including the evolution of the total tax rate and corresponding property tax.

Year Assessment value Total tax rate Property tax Year over year change
2025-2026 $847,760 1.1724 $9,939 +0.98%
2024-2025 $831,139 1.1842 $9,842 -22.76%
2023-2024 $814,844 1.5638 $12,743 +34.18%
2022-2023 $798,867 1.1888 $9,497 +0.82%
2021-2022 $783,204 1.2028 $9,420 +0.99%

Permits for 21991 Idena Avenue, Castro Valley

The complete history of permits filed for 21991 Idena Avenue, Castro Valley, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Data not available for this property.

Castro Valley residential market stats

Median Sale Price
$989,000
-8.4% YoY
Median Price/Sqft
$669
3.4% YoY
Alameda County Median Sale Price
$965,000
-7.1% YoY

Access a detailed real estate market overview of Castro Valley so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Castro Valley and compare it to other neighborhoods in Alameda County.

Check out recently sold homes in Castro-Valley and see how their prices compare.

Demographics by Zip Code

Total population 44,855
Median age 41.7
Average household income $161,274
Family households 74.3%
Occupied housing units 15,565
Owner occupied units 66.3%
Average number of people per household 2.84
Median year structure built 1960
Median value for units with a mortgage $1,065,100
Median value for units without a mortgage $995,000

Risk

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FEMA flood zone(s) 0.2, AE, X (See more on map)
Fire hazard zone See more on map
Faults and tsunami inundation zone map
Landslides and liquefaction map

Transportation

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Neighbors for 21991 Idena Avenue, Castro Valley

Here are the neighbors for 21991 Idena Avenue, Castro Valley.

Address Square feet Purchase date Purchase price
22045 Young Ave, Castro Valley 1,028 06/25/2003
2661 Watson St, Castro Valley 905 05/21/2003
2513 Watson St, Castro Valley 905 11/10/2016
22031 Young Ave, Castro Valley 906 09/06/2016
2669 Vegas Ave, Castro Valley 988 08/27/2021 $880,000
2666 Vegas Ave, Castro Valley 1,016 08/17/1999 $210,000
2681 Vegas Ave, Castro Valley 1,104 11/21/2013
22003 Young Ave, Castro Valley 905
22073 Young Ave, Castro Valley 988 12/05/2023 $830,000
2532 Watson St, Castro Valley 1,471 01/04/2022 $1,085,000
2544 Watson St, Castro Valley 1,338 10/20/1997 $174,000
22019 Young Ave, Castro Valley 905 10/10/2018
2673 Watson St, Castro Valley 905 12/09/2020
22057 Young Ave, Castro Valley 906 01/20/1999
2550 Watson St, Castro Valley 1,864 12/11/2008 $460,000
2691 Watson St, Castro Valley 1,388 01/09/2023 $970,000
22053 Young Ave, Castro Valley 905 06/28/2023
22061 Young Ave, Castro Valley 988 06/19/2015 $450,000
2526 Watson St, Castro Valley 905 06/27/1991 $168,000
2645 Vegas Ave, Castro Valley 1,289 03/31/2016 $520,000

Nearby ZIP Codes for 21991 Idena Avenue, Castro Valley

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