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Single Family ResidenceResidential
$1,218,886$617 / 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 91How 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

20 STONINGTON PT

ALAMEDA, CA 94502
0
Baths
1,976 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.
3,648 ft²
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.

Valuation

$1.2M
$1.1M low$1.3M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,336 (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.$416,836 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$109,522
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$314,314
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$408,525
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

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.1 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Single Family Residence
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.1981
Lot (acres)The size of the land the home sits on, from county records.0.08
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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
Amelia Earhart SchoolA-
Elementary · Grades KG–5 · 0.4 mi
M
Lincoln Middle SchoolA+
Middle · Grades 6–8 · 1.0 mi
H
Alameda High SchoolA+
High · Grades 9–12 · 1.7 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

20 Stonington Pt 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.

  • Costs less per square foot than 67% of homes in Harbor Bay Isle
  • Bigger than 70% of homes in Alameda County
  • Has a smaller lot than 85% of homes in Alameda County
  • Older than 84% of homes in Harbor Bay Isle

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
$655K$2.2M

This home is worth more than 63% of 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$1,218,886
CheaperTypical $1,089,953Pricier

Pricier than 63% of homes nearby

Price per ft²$617
CheaperTypical $638Pricier

Pricier than 43% of homes nearby

Living area1,976 ft²
SmallerTypical 1,702 ft²Bigger

Bigger than 66% of homes nearby

Lot size3,648 ft²
SmallerTypical 4,008 ft²Bigger

Bigger than 45% of homes nearby

Year built1979
OlderTypical 1984Newer

Newer than 42% of homes nearby

How 20 Stonington Pt ranks against every home in each area.
MeasureThis homeHarbor Bay IsleAlameda 94502Alameda County
Estimated valuepricier than$1,218,88636% of homes63% of homes61% of homes
Price per ft²pricier than$61733% of homes43% of homes40% of homes
Living areabigger than1,976 ft²44% of homes66% of homes70% of homes
Lot sizebigger than3,648 ft²26% of homes45% of homes15% of homes
Year builtnewer than197916% of homes42% of homes67% of homes

About 20 Stonington Pt

How much is 20 Stonington Pt, Alameda, CA worth?

The TopHap Estimate for 20 Stonington Pt, Alameda, CA is $1,218,886 as of Sep 24, 2026. The likely range is $1,103,147 to $1,334,625. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Stonington Pt, Alameda, CA last sell?

20 Stonington Pt, Alameda, CA last sold on Jan 1, 1900, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 20 Stonington Pt, Alameda, CA?

20 Stonington Pt, Alameda, CA has 1,976 square feet of living space and a 0.08-acre lot.

When was 20 Stonington Pt, Alameda, CA built?

20 Stonington Pt, Alameda, CA was built in 1979, making it 47 years old.

What schools serve 20 Stonington Pt, Alameda, CA?

20 Stonington Pt, 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 20 Stonington Pt, Alameda, CA compare to other homes in Alameda 94502?

Among the 5,176 homes in Alameda 94502, it is worth more than 63% of them ($1,218,886 against a typical $1,089,953), its price per square foot is higher than 43% of them ($617 against a typical $638), it is bigger than 66% of them (1,976 ft² against a typical 1,702 ft²), its lot is bigger than 45% of them (3,648 ft² against a typical 4,008 ft²) and it is newer than 42% of them (1979 against a typical 1984). Measured against all of Alameda County, it is worth more than 61% 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 20 Stonington Pt, Alameda, CA?

The 2025 property tax bill for 20 Stonington Pt, Alameda, CA was $7,336. The county assessed it at $416,836.

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