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CondominiumResidential
$920,572$514 / 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 Oct 21, 2026
Last sold for $932,500 on Oct 25, 2023

918 SIENNA LOOP

SAN LEANDRO, CA 94579
4
Beds
3.5
Baths
1,791 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.
2023
Year BuiltThe year the home was originally built, according to county records.
3
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$921K
$856K low$985K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$932,500 · Oct 25, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,590 (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.$945,797 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$285,069
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$667,728

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.31
35
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.
21
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.
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.1 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.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.

M
Washington Manor Middle SchoolC
Middle · Grades 6–8 · 0.3 mi
E
Corvallis Elementary SchoolC-
Elementary · Grades KG–5 · 0.4 mi
H
Arroyo High SchoolB
High · Grades 9–12 · 0.9 mi

District: San Lorenzo Unified School District

Neighborhood · ZIP 94579These 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.55
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 100.555

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.6%
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.21,577
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,388 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,526
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$114,894
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

918 Sienna Loop 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 95% of homes in Washington Manor
  • Costs less per square foot than 80% of homes in Alameda County
  • Bigger than 89% of homes in Washington Manor
  • Among the newest homes in Washington Manor

What homes are worth in San Leandro 94579

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

This home
$456K$1.1M

This home is worth more than 84% of homes in San Leandro 94579.

How it measures up in San Leandro 94579

The dot is this home. The mark in the middle is the typical home in San Leandro 94579.

Estimated value$920,572
CheaperTypical $757,707Pricier

Pricier than 84% of homes nearby

Price per ft²$514
CheaperTypical $549Pricier

Pricier than 39% of homes nearby

Living area1,791 ft²
SmallerTypical 1,380 ft²Bigger

Bigger than 79% of homes nearby

Year built2023
OlderTypical 1953Newer

Newer than almost all homes nearby

How 918 Sienna Loop ranks against every home in each area.
MeasureThis homeWashington ManorSan Leandro 94579Alameda County
Estimated valuepricier than$920,57295% of homes84% of homes41% of homes
Price per ft²pricier than$51433% of homes39% of homes20% of homes
Living areabigger than1,791 ft²89% of homes79% of homes62% of homes
Year builtnewer than2023almost all homesalmost all homesalmost all homes

About 918 Sienna Loop

How much is 918 Sienna Loop, San Leandro, CA worth?

The TopHap Estimate for 918 Sienna Loop, San Leandro, CA is $920,572 as of Oct 21, 2026. The likely range is $855,738 to $985,406. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 918 Sienna Loop, San Leandro, CA last sell?

918 Sienna Loop, San Leandro, CA last sold on Oct 25, 2023 for $932,500, according to the county's recorded deed.

How big is 918 Sienna Loop, San Leandro, CA?

918 Sienna Loop, San Leandro, CA has 4 bedrooms, 3.5 bathrooms and 1,791 square feet of living space.

When was 918 Sienna Loop, San Leandro, CA built?

918 Sienna Loop, San Leandro, CA was built in 2023, making it 3 years old. It is a condo/apartment home. The building has 3 stories.

What schools serve 918 Sienna Loop, San Leandro, CA?

918 Sienna Loop, San Leandro, CA is assigned to Washington Manor Middle School (middle), rated C; Corvallis Elementary School (elementary), rated C-; Arroyo High School (high), rated B. All sit in San Lorenzo Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 918 Sienna Loop, San Leandro, CA compare to other homes in San Leandro 94579?

Among the 6,156 homes in San Leandro 94579, it is worth more than 84% of them ($920,572 against a typical $757,707), its price per square foot is higher than 39% of them ($514 against a typical $549), it is bigger than 79% of them (1,791 ft² against a typical 1,380 ft²) and it is newer than almost all of them (2023 against a typical 1953). Measured against all of Alameda County, it is worth more than 41% 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 918 Sienna Loop, San Leandro, CA?

The 2025 property tax bill for 918 Sienna Loop, San Leandro, CA was $11,590. The county assessed it at $945,797.

More homes on Sienna Loop

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