4340 Gem Ave
Castro Valley, CA 94546
3 bd 1 ba 1,012 sqft Built 1949 Lot 5,000 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 | $733,925 | $314,539 | $1,048,464 | $13,158 |
| 2024 | $733,925 | $314,539 | $1,048,464 | $12,871 |
| 2023 | $705,432 | $302,328 | $1,007,760 | $12,675 |
| 2022 | $691,600 | $296,400 | $988,000 | $12,440 |
| 2021 | $333,888 | $143,095 | $476,983 | $6,300 |
| 2020 | $330,467 | $141,628 | $472,095 | $6,154 |
| 2019 | $323,988 | $138,852 | $462,840 | $6,262 |
| 2018 | $317,637 | $136,130 | $453,767 | $6,084 |
| 2017 | $311,410 | $133,461 | $444,871 | $5,922 |
| 2016 | $305,306 | $130,845 | $436,151 | $5,634 |
| 2015 | $300,722 | $128,881 | $429,603 | $5,266 |
| 2014 | $294,834 | $126,357 | $421,191 | $5,195 |
| 2013 | $245,000 | $105,000 | $350,000 | $4,371 |
| 2012 | $245,000 | $105,000 | $350,000 | $4,356 |
| 2010 | $259,000 | $111,000 | $370,000 | $4,937 |
| 2009 | $280,000 | $120,000 | $400,000 | $4,617 |
| 2008 | $254,707 | $109,160 | $363,867 | $4,459 |
| 2007 | $249,713 | $107,019 | $356,732 | $4,346 |
Property facts
Year built
1949
Property type
single_family
Stories
1
Beds
3
Baths
1
Living area
1,012 sqft
Lot size
5,000 sqft
ZIP code
94546
City
Castro Valley
Street
Gem Ave
Coordinates
37.69811, -122.06058
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 4340 Gem Ave last sell?
No public-record sale is on file for 4340 Gem Ave.
What is the current tax assessment for 4340 Gem Ave?
The most recent total assessment for 4340 Gem Ave (year 2025) is $1,048,464 with $13,158 in property tax.
When was 4340 Gem Ave built?
4340 Gem Ave was built in 1949.
How does 4340 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 4340 Gem Ave?
4340 Gem Ave is a 3 bed, 1 bath, 1,012 sqft, 5,000 sqft lot single_family.
Is 4340 Gem Ave a flip candidate?
No — 4340 Gem Ave does not appear in our flips dataset.
Is 4340 Gem Ave a tax-appeal candidate?
No — 4340 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