4238 Gem Ave
Castro Valley, CA 94546
2 bd 1 ba 1,144 sqft Built 1947 Lot 6,098 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 | $557,526 | $238,940 | $796,466 | $10,185 |
| 2024 | $557,526 | $238,940 | $796,466 | $9,958 |
| 2023 | $535,878 | $229,662 | $765,540 | $9,799 |
| 2022 | $525,373 | $225,159 | $750,532 | $9,612 |
| 2021 | $515,073 | $220,745 | $735,818 | $9,366 |
| 2020 | $509,796 | $218,484 | $728,280 | $9,153 |
| 2019 | $499,800 | $214,200 | $714,000 | $9,338 |
| 2018 | $40,946 | $81,872 | $122,818 | $2,171 |
| 2017 | $40,144 | $80,267 | $120,411 | $2,112 |
| 2016 | $39,357 | $78,694 | $118,051 | $2,010 |
| 2015 | $38,766 | $77,512 | $116,278 | $1,880 |
| 2014 | $38,006 | $75,994 | $114,000 | $1,833 |
| 2013 | $37,835 | $75,650 | $113,485 | $1,797 |
| 2012 | $37,093 | $74,167 | $111,260 | $1,752 |
| 2010 | $36,366 | $72,713 | $109,079 | $1,711 |
| 2009 | $36,094 | $72,170 | $108,264 | $1,707 |
| 2008 | $35,470 | $70,923 | $106,393 | $1,618 |
| 2007 | $34,775 | $69,532 | $104,307 | $1,575 |
Property facts
Year built
1947
Property type
single_family
Stories
1
Beds
2
Baths
1
Living area
1,144 sqft
Lot size
6,098 sqft
ZIP code
94546
City
Castro Valley
Street
Gem Ave
Coordinates
37.69855, -122.06414
Comparable properties nearby
Frequently asked questions
When did 4238 Gem Ave last sell?
No public-record sale is on file for 4238 Gem Ave.
What is the current tax assessment for 4238 Gem Ave?
The most recent total assessment for 4238 Gem Ave (year 2025) is $796,466 with $10,185 in property tax.
When was 4238 Gem Ave built?
4238 Gem Ave was built in 1947.
How does 4238 Gem Ave compare to others on Gem Ave?
We track 8 other properties on Gem Ave. Browse the list under "Other properties on Gem Ave" to compare beds, baths, and sale history.
What are the property facts for 4238 Gem Ave?
4238 Gem Ave is a 2 bed, 1 bath, 1,144 sqft, 6,098 sqft lot single_family.
Is 4238 Gem Ave a flip candidate?
No — 4238 Gem Ave does not appear in our flips dataset.
Is 4238 Gem Ave a tax-appeal candidate?
No — 4238 Gem Ave 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 Gem Ave