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TownhouseResidential
$634,352$509 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $550,000 on Jul 13, 2006

3421 CATALINA AVE

ALAMEDA, CA 94502
2
Beds
2
Baths
1,247 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
2,262 ft²
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$634K
$556K low$713K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$550,000 · Jul 13, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,778 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$744,557 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$225,467
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$526,090
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$729,823
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$757,890

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.9 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.11%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
CountyALAMEDA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1977
Lot (acres)The size of the land the home sits on, from county records.0.05
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Amelia Earhart SchoolA-
Elementary · Grades KG–5 · 1.1 mi
M
Lincoln Middle SchoolA+
Middle · Grades 6–8 · 1.7 mi
H
Alameda High SchoolA+
High · Grades 9–12 · 2.4 mi

District: Alameda City Unified School District

Neighborhood · ZIP 94502These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.43
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.379

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.45%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.15,069
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,016 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$164,486
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$194,499
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.20 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

3421 Catalina Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the least valuable homes in Alameda 94502
  • Costs less per square foot than 84% of homes in Alameda 94502
  • Smaller than 90% of homes in Alameda 94502
  • Has a smaller lot than 95% of homes in Alameda County
  • Newer than 69% of homes in Bay Farm Island

What homes are worth in Alameda 94502

Each bar is how many homes fall in that price range. The marker is this home.

This home
$641K$2.2M

This home is worth less than almost all homes in Alameda 94502.

How it measures up in Alameda 94502

The dot is this home. The mark in the middle is the typical home in Alameda 94502.

Estimated value$634,352
CheaperTypical $1,063,875Pricier

Cheaper than almost all homes nearby

Price per ft²$509
CheaperTypical $617Pricier

Pricier than 16% of homes nearby

Living area1,247 ft²
SmallerTypical 1,701 ft²Bigger

Bigger than 10% of homes nearby

Lot size2,262 ft²
SmallerTypical 4,008 ft²Bigger

Bigger than 29% of homes nearby

Year built1975
OlderTypical 1984Newer

Newer than 34% of homes nearby

How 3421 Catalina Ave ranks against every home in each area.
MeasureThis homeBay Farm IslandAlameda 94502Alameda County
Estimated valuepricier than$634,3522% of homesalmost no homes18% of homes
Price per ft²pricier than$50929% of homes16% of homes20% of homes
Living areabigger than1,247 ft²18% of homes10% of homes29% of homes
Lot sizebigger than2,262 ft²46% of homes29% of homes5% of homes
Year builtnewer than197569% of homes34% of homes64% of homes

About 3421 Catalina Ave

How much is 3421 Catalina Ave, Alameda, CA worth?

The TopHap Estimate for 3421 Catalina Ave, Alameda, CA is $634,352 as of Aug 30, 2026. The likely range is $555,962 to $712,742. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3421 Catalina Ave, Alameda, CA last sell?

3421 Catalina Ave, Alameda, CA last sold on Jul 13, 2006 for $550,000, according to the county's recorded deed.

How big is 3421 Catalina Ave, Alameda, CA?

3421 Catalina Ave, Alameda, CA has 2 bedrooms, 2 bathrooms, 1,247 square feet of living space and a 0.05-acre lot.

When was 3421 Catalina Ave, Alameda, CA built?

3421 Catalina Ave, Alameda, CA was built in 1975, making it 51 years old. The building has 1 story.

What schools serve 3421 Catalina Ave, Alameda, CA?

3421 Catalina Ave, Alameda, CA is assigned to Amelia Earhart School (elementary), rated A-; Lincoln Middle School (middle), rated A+; Alameda High School (high), rated A+. All sit in Alameda City Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3421 Catalina Ave, Alameda, CA compare to other homes in Alameda 94502?

Among the 5,176 homes in Alameda 94502, it is worth more than almost none of them ($634,352 against a typical $1,063,875), its price per square foot is higher than 16% of them ($509 against a typical $617), it is bigger than 10% of them (1,247 ft² against a typical 1,701 ft²), its lot is bigger than 29% of them (2,262 ft² against a typical 4,008 ft²) and it is newer than 34% of them (1975 against a typical 1984). Measured against all of Alameda County, it is worth more than 18% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 3421 Catalina Ave, Alameda, CA?

The 2025 property tax bill for 3421 Catalina Ave, Alameda, CA was $10,778. The county assessed it at $744,557.

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