Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$988,689$664 / 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 97How 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

645 ALAMEDA DR

LIVERMORE, CA 94551
4
Beds
2
Baths
1,489 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$989K
$957K low$1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,692 (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.$147,793 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$67,462
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$87,331
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,759
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$947,610

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountyALAMEDA
Lot (acres)The size of the land the home sits on, from county records.0.15
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(2)

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
Rancho Las Positas Elementary SchoolA-
Elementary · Grades KG–5 · 0.6 mi
H
Granada High SchoolA
High · Grades 9–12 · 1.4 mi
M
Junction Avenue TK-8 SchoolC-
Middle · Grades KG–8 · 1.5 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%

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

645 Alameda Dr 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.

  • Has a smaller lot than 67% of homes in Summerset
  • Older than 70% of homes in Livermore 94551

What homes are worth in Livermore 94551

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

This home
$588K$1.8M

This home is worth more than 53% 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.

Estimated value$988,689
CheaperTypical $971,855Pricier

Pricier than 53% of homes nearby

Price per ft²$664
CheaperTypical $651Pricier

Pricier than 55% of homes nearby

Living area1,489 ft²
SmallerTypical 1,514 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.15 ac
SmallerTypical 0.15 acBigger

Bigger than 44% of homes nearby

Year built1969
OlderTypical 1985Newer

Newer than 30% of homes nearby

How 645 Alameda Dr ranks against every home in each area.
MeasureThis homeSummersetLivermore 94551Alameda County
Estimated valuepricier than$988,68940% of homes53% of homes46% of homes
Price per ft²pricier than$66439% of homes55% of homes51% of homes
Living areabigger than1,489 ft²54% of homes48% of homes45% of homes
Lot sizebigger than0.15 ac33% of homes44% of homes56% of homes
Year builtnewer than196937% of homes30% of homes57% of homes

About 645 Alameda Dr

How much is 645 Alameda Dr, Livermore, CA worth?

The TopHap Estimate for 645 Alameda Dr, Livermore, CA is $988,689 as of Aug 30, 2026. The likely range is $956,665 to $1,020,713. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 645 Alameda Dr, Livermore, CA last sell?

645 Alameda Dr, Livermore, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 645 Alameda Dr, Livermore, CA?

645 Alameda Dr, Livermore, CA has 4 bedrooms, 2 bathrooms, 1,489 square feet of living space and a 0.15-acre lot.

When was 645 Alameda Dr, Livermore, CA built?

645 Alameda Dr, Livermore, CA was built in 1969, making it 57 years old. It is a custom design home. The building has 2 stories.

What schools serve 645 Alameda Dr, Livermore, CA?

645 Alameda Dr, Livermore, CA is assigned to Rancho Las Positas Elementary School (elementary), rated A-; 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 645 Alameda Dr, Livermore, CA compare to other homes in Livermore 94551?

Among the 12,834 homes in Livermore 94551, it is worth more than 53% of them ($988,689 against a typical $971,855), its price per square foot is higher than 55% of them ($664 against a typical $651), it is bigger than 48% of them (1,489 ft² against a typical 1,514 ft²), its lot is bigger than 44% of them (0.15 ac against a typical 0.15 ac) and it is newer than 30% of them (1969 against a typical 1985). Measured against all of Alameda County, it is worth more than 46% 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 645 Alameda Dr, Livermore, CA?

The 2025 property tax bill for 645 Alameda Dr, Livermore, CA was $2,692. The county assessed it at $147,793.

More homes on Alameda Dr

Closest homes

More homes in Livermore 94551

Assigned schools

Explore the area

See this home in context

Open 645 Alameda Dr 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