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Duplex (2 Units, Any Combination)Residential

509 JAMES ST

LIVERMORE, CA 94551
4
Beds
2
Baths
1,625 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,991 (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.$283,350 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$113,340
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$170,010
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$277,795

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
CountyALAMEDA
Lot (acres)The size of the land the home sits on, from county records.0.14
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
Marylin Avenue STEAM AcademyB-
Elementary · Grades KG–5 · 0.2 mi
H
Granada High SchoolA
High · Grades 9–12 · 0.8 mi
M
Junction Avenue TK-8 SchoolC
Middle · Grades KG–8 · 0.9 mi

District: Livermore Valley Joint Unified School District

Neighborhood · ZIP 94551These 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.60
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.382

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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.47,124
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.555 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,402
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$169,089
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.17 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

509 James 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.

  • Bigger than 72% of homes in Northside Livermore Area
  • Has a bigger lot than 70% of homes in Northside Livermore Area
  • Older than 94% of homes in Livermore 94551

How it measures up in Livermore 94551

The dot is this home. The mark in the middle is the typical home in Livermore 94551.

Living area1,625 ft²
SmallerTypical 1,514 ft²Bigger

Bigger than 59% of homes nearby

Lot size0.14 ac
SmallerTypical 0.15 acBigger

Bigger than 41% of homes nearby

Year built1953
OlderTypical 1985Newer

Newer than 6% of homes nearby

How 509 James St ranks against every home in each area.
MeasureThis homeNorthside Livermore AreaLivermore 94551Alameda County
Living areabigger than1,625 ft²72% of homes59% of homes53% of homes
Lot sizebigger than0.14 ac70% of homes41% of homes55% of homes
Year builtnewer than195325% of homes6% of homes36% of homes

About 509 James St

When did 509 James St, Livermore, CA last sell?

509 James St, Livermore, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 509 James St, Livermore, CA?

509 James St, Livermore, CA has 4 bedrooms, 2 bathrooms, 1,625 square feet of living space and a 0.14-acre lot.

When was 509 James St, Livermore, CA built?

509 James St, Livermore, CA was built in 1953, making it 73 years old. The building has 1 story.

What schools serve 509 James St, Livermore, CA?

509 James St, Livermore, CA is assigned to Marylin Avenue STEAM Academy (elementary), rated B-; Granada High School (high), rated A; Junction Avenue TK-8 School (middle), rated C. All sit in Livermore Valley Joint Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 James St, Livermore, CA compare to other homes in Livermore 94551?

Among the 12,855 homes in Livermore 94551, it is bigger than 59% of them (1,625 ft² against a typical 1,514 ft²), its lot is bigger than 41% of them (0.14 ac against a typical 0.15 ac) and it is newer than 6% of them (1953 against a typical 1985). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 509 James St, Livermore, CA?

The 2025 property tax bill for 509 James St, Livermore, CA was $4,991. The county assessed it at $283,350.

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