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Single Family ResidenceResidential
$1,618,531$793 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

4091 BLACOW ST

PLEASANTON, CA 94566
3
Beds
3
Baths
2,042 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1984
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

$1.6M
$1.5M low$1.7M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,497 (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.$470,965 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$141,289
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$329,676
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$461,731
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,786,950

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.0.23
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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
Alisal Elementary SchoolA
Elementary · Grades KG–5 · 0.4 mi
H
Amador Valley High SchoolA+
High · Grades 9–12 · 0.7 mi
M
Harvest Park Middle SchoolA+
Middle · Grades 6–8 · 0.8 mi

District: Pleasanton Unified School District

Neighborhood · ZIP 94566These 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.53
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 100.598

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.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.4%
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.40,906
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,007 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$169,358
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$214,076
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.19 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

4091 Blacow 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 more than 81% of homes in Alameda County
  • Costs more per square foot than 73% of homes in Alameda County
  • Bigger than 73% of homes in Alameda County
  • Has a bigger lot than 79% of homes in Alameda County
  • Newer than 71% of homes in Alameda County

What homes are worth in Pleasanton 94566

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

This home
$593K$4.8M

This home is worth more than 49% of homes in Pleasanton 94566.

How it measures up in Pleasanton 94566

The dot is this home. The mark in the middle is the typical home in Pleasanton 94566.

Estimated value$1,618,531
CheaperTypical $1,624,258Pricier

Pricier than 49% of homes nearby

Price per ft²$793
CheaperTypical $772Pricier

Pricier than 59% of homes nearby

Living area2,042 ft²
SmallerTypical 2,088 ft²Bigger

Bigger than 47% of homes nearby

Lot size0.23 ac
SmallerTypical 0.18 acBigger

Bigger than 66% of homes nearby

Year built1984
OlderTypical 1984Newer

Newer than 51% of homes nearby

How 4091 Blacow St ranks against every home in each area.
MeasureThis homePleasanton 94566Alameda County
Estimated valuepricier than$1,618,53149% of homes81% of homes
Price per ft²pricier than$79359% of homes73% of homes
Living areabigger than2,042 ft²47% of homes73% of homes
Lot sizebigger than0.23 ac66% of homes79% of homes
Year builtnewer than198451% of homes71% of homes

About 4091 Blacow St

How much is 4091 Blacow St, Pleasanton, CA worth?

The TopHap Estimate for 4091 Blacow St, Pleasanton, CA is $1,618,531 as of Sep 24, 2026. The likely range is $1,503,575 to $1,733,487. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4091 Blacow St, Pleasanton, CA last sell?

4091 Blacow St, Pleasanton, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4091 Blacow St, Pleasanton, CA?

4091 Blacow St, Pleasanton, CA has 3 bedrooms, 3 bathrooms, 2,042 square feet of living space and a 0.23-acre lot.

When was 4091 Blacow St, Pleasanton, CA built?

4091 Blacow St, Pleasanton, CA was built in 1984, making it 42 years old. The building has 2 stories.

What schools serve 4091 Blacow St, Pleasanton, CA?

4091 Blacow St, Pleasanton, CA is assigned to Alisal Elementary School (elementary), rated A; Amador Valley High School (high), rated A+; Harvest Park Middle School (middle), rated A+. All sit in Pleasanton Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4091 Blacow St, Pleasanton, CA compare to other homes in Pleasanton 94566?

Among the 13,359 homes in Pleasanton 94566, it is worth more than 49% of them ($1,618,531 against a typical $1,624,258), its price per square foot is higher than 59% of them ($793 against a typical $772), it is bigger than 47% of them (2,042 ft² against a typical 2,088 ft²), its lot is bigger than 66% of them (0.23 ac against a typical 0.18 ac) and it is newer than 51% of them (1984 against a typical 1984). Measured against all of Alameda County, it is worth more than 81% 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 4091 Blacow St, Pleasanton, CA?

The 2025 property tax bill for 4091 Blacow St, Pleasanton, CA was $5,497. The county assessed it at $470,965.

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