NOT LISTED FOR SALE

21143 Aspen Ave Castro Valley, CA 94546

Castro Valley East Neighborhood

Estimated Value: $1,041,000 - $1,264,000

3 Beds
2 Baths
1,916 Sq Ft
$583/Sq Ft Est. Value

About This Home

This home is located at 21143 Aspen Ave, Castro Valley, CA 94546 and is currently estimated at $1,116,546, approximately $582 per square foot. 21143 Aspen Ave is a home located in Alameda County with nearby schools including Marshall Elementary School, Creekside Middle School, and Canyon Middle School.

Ownership History

Date Name Owned For Owner Type

Purchase Details

Closed on
Aug 20, 2025
Sold by
Reed Family Trust and Reed Carole L
Bought by
Carole L Reed Declaration Of Trust and Reed
Current Estimated Value
$1,116,546
Source: Public Records

Range of Values:

Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

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ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

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First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

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Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

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Average Value
Not Available
List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

Date Buyer Sale Price Title Company
Carole L Reed Declaration Of Trust -- None Listed On Document
Source: Public Records

Tax History Compared to Growth

Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $2,404 $135,937 $61,506 $81,431
2024 $2,404 $133,134 $60,300 $79,834
2023 $2,343 $137,387 $59,118 $78,269
2022 $2,279 $127,692 $57,958 $76,734
2021 $2,213 $125,052 $56,822 $75,230
2020 $2,160 $130,698 $56,240 $74,458
2019 $2,186 $128,135 $55,137 $72,998
2018 $2,121 $125,623 $54,056 $71,567
2017 $2,062 $123,160 $52,996 $70,164
2016 $1,960 $120,745 $51,957 $68,788
2015 $1,832 $118,931 $51,176 $67,755
2014 $1,784 $116,602 $50,174 $66,428
Source: Public Records

Map

California Alameda County Castro Valley 94546 Castro Valley East

21143 Aspen Ave, Castro Valley, CA

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