Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$932,539$935 / 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 96How 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 $238,000 on May 31, 2012

1819 UNION ST

ALAMEDA, CA 94501
2
Beds
1.5
Baths
997 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.
2,577 ft²
Lot SizeThe size of the land the home sits on, from county records.
1914
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$933K
$894K low$972K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$238,000 · May 31, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,325 (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.$297,901 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$91,470
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$213,431
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$291,924
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$671,940

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyALAMEDA
Lot (acres)The size of the land the home sits on, from county records.0.06
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(11)

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

Foreclosure Filings(2)

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

M
Wood Middle SchoolB
Middle · Grades 6–8 · 1.1 mi
E
Maya Lin SchoolA
Elementary · Grades KG–5 · 1.1 mi
H
Encinal Jr. & Sr. High School SchoolB+
High · Grades 6–12 · 2.0 mi

District: Alameda City Unified School District

Neighborhood · ZIP 94501These 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.124
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.409

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.61,491
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,332 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$122,273
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$153,309
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%

Owner Tools

Do you own this home?
Claim this home

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

1819 Union St 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.

  • Worth less than 73% of homes in Central Alameda
  • Costs more per square foot than 90% of homes in Alameda 94501
  • Smaller than 91% of homes in Central Alameda
  • Has a smaller lot than 94% of homes in Alameda 94501
  • Older than 92% of homes in Alameda County

What homes are worth in Alameda 94501

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

This home
$400K$2.3M

This home is worth more than 28% of homes in Alameda 94501.

How it measures up in Alameda 94501

The dot is this home. The mark in the middle is the typical home in Alameda 94501.

Estimated value$932,539
CheaperTypical $1,146,374Pricier

Pricier than 28% of homes nearby

Price per ft²$935
CheaperTypical $733Pricier

Pricier than 90% of homes nearby

Living area997 ft²
SmallerTypical 1,652 ft²Bigger

Bigger than 10% of homes nearby

Lot size2,577 ft²
SmallerTypical 0.11 acBigger

Bigger than 6% of homes nearby

Year built1914
OlderTypical 1932Newer

Newer than 30% of homes nearby

How 1819 Union St ranks against every home in each area.
MeasureThis homeCentral AlamedaAlameda 94501Alameda County
Estimated valuepricier than$932,53927% of homes28% of homes41% of homes
Price per ft²pricier than$93584% of homes90% of homes87% of homes
Living areabigger than997 ft²9% of homes10% of homes11% of homes
Lot sizebigger than2,577 ft²8% of homes6% of homes7% of homes
Year builtnewer than191447% of homes30% of homes8% of homes

About 1819 Union St

How much is 1819 Union St, Alameda, CA worth?

The TopHap Estimate for 1819 Union St, Alameda, CA is $932,539 as of Aug 30, 2026. The likely range is $893,525 to $971,553. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1819 Union St, Alameda, CA last sell?

1819 Union St, Alameda, CA last sold on May 31, 2012 for $238,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 1819 Union St, Alameda, CA?

1819 Union St, Alameda, CA has 2 bedrooms, 1.5 bathrooms, 997 square feet of living space and a 0.06-acre lot.

When was 1819 Union St, Alameda, CA built?

1819 Union St, Alameda, CA was built in 1914, making it 112 years old. The building has 1 story.

What schools serve 1819 Union St, Alameda, CA?

1819 Union St, Alameda, CA is assigned to Wood Middle School (middle), rated B; Maya Lin School (elementary), rated A; Encinal Jr. & Sr. High School School (high), rated B+. All sit in Alameda City Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1819 Union St, Alameda, CA compare to other homes in Alameda 94501?

Among the 14,787 homes in Alameda 94501, it is worth more than 28% of them ($932,539 against a typical $1,146,374), its price per square foot is higher than 90% of them ($935 against a typical $733), it is bigger than 10% of them (997 ft² against a typical 1,652 ft²), its lot is bigger than 6% of them (2,577 ft² against a typical 0.11 ac) and it is newer than 30% of them (1914 against a typical 1932). Measured against all of Alameda County, it is worth more than 41% 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 1819 Union St, Alameda, CA?

The 2025 property tax bill for 1819 Union St, Alameda, CA was $5,325. The county assessed it at $297,901.

More homes on Union St

Closest homes

More homes in Alameda 94501

Assigned schools

Explore the area

See this home in context

Open 1819 Union St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map