Skip to content
Skip to content
TopHapOpen in map
CondominiumResidential
$745,531$746 / 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
Last sold for $770,500 on Nov 18, 2024

423 SENTINEL DR

ALAMEDA, CA 94501
1
Beds
1.5
Baths
1,000 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.
2024
Year BuiltThe year the home was originally built, according to county records.
3
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$746K
$679K low$812K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$770,500 · Nov 18, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,273 (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.$776,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$232,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$543,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$770,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.28
21
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
16
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
40
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
62
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyALAMEDA
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(1)

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
Ruby Bridges Elementary SchoolC+
Elementary · Grades KG–5 · 0.7 mi
M
Encinal Jr. & Sr. High School SchoolB+
Middle · Grades 6–12 · 1.4 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

423 Sentinel 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.

  • Worth less than 84% of homes in Alameda 94501
  • Costs more per square foot than 66% of homes in West End
  • Smaller than 89% of homes in Alameda 94501
  • Among the newest homes in West End

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
$394K$2.2M

This home is worth more than 16% 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$745,531
CheaperTypical $1,125,123Pricier

Pricier than 16% of homes nearby

Price per ft²$746
CheaperTypical $718Pricier

Pricier than 58% of homes nearby

Living area1,000 ft²
SmallerTypical 1,654 ft²Bigger

Bigger than 11% of homes nearby

Year built2024
OlderTypical 1933Newer

Newer than almost all homes nearby

How 423 Sentinel Dr ranks against every home in each area.
MeasureThis homeWest EndAlameda 94501Alameda County
Estimated valuepricier than$745,53119% of homes16% of homes27% of homes
Price per ft²pricier than$74666% of homes58% of homes66% of homes
Living areabigger than1,000 ft²13% of homes11% of homes12% of homes
Year builtnewer than2024almost all homesalmost all homesalmost all homes

About 423 Sentinel Dr

How much is 423 Sentinel Dr, Alameda, CA worth?

The TopHap Estimate for 423 Sentinel Dr, Alameda, CA is $745,531 as of Sep 24, 2026. The likely range is $678,849 to $812,213. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 423 Sentinel Dr, Alameda, CA last sell?

423 Sentinel Dr, Alameda, CA last sold on Nov 18, 2024 for $770,500, according to the county's recorded deed.

How big is 423 Sentinel Dr, Alameda, CA?

423 Sentinel Dr, Alameda, CA has 1 bedrooms, 1.5 bathrooms and 1,000 square feet of living space.

When was 423 Sentinel Dr, Alameda, CA built?

423 Sentinel Dr, Alameda, CA was built in 2024, making it 2 years old. It is a condo/apartment home. The building has 3 stories.

What schools serve 423 Sentinel Dr, Alameda, CA?

423 Sentinel Dr, Alameda, CA is assigned to Ruby Bridges Elementary School (elementary), rated C+; Encinal Jr. & Sr. High School School (middle), rated B+. All sit in Alameda City Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 423 Sentinel Dr, Alameda, CA compare to other homes in Alameda 94501?

Among the 14,802 homes in Alameda 94501, it is worth more than 16% of them ($745,531 against a typical $1,125,123), its price per square foot is higher than 58% of them ($746 against a typical $718), it is bigger than 11% of them (1,000 ft² against a typical 1,654 ft²) and it is newer than almost all of them (2024 against a typical 1933). Measured against all of Alameda County, it is worth more than 27% 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 423 Sentinel Dr, Alameda, CA?

The 2025 property tax bill for 423 Sentinel Dr, Alameda, CA was $14,273. The county assessed it at $776,000.

More homes on Sentinel Dr

Closest homes

More homes in Alameda 94501

Assigned schools

Explore the area

See this home in context

Open 423 Sentinel 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