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Single Family ResidenceResidential
$652,498$561 / 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 96How 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

1870 VIA RANCHO

SAN LORENZO, CA 94580
3
Beds
2
Baths
1,164 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1955
Year BuiltThe year the home was originally built, according to county records.
1
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$652K
$628K low$677K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,332 (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.$219,315 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$127,247
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$99,068
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$214,878
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$703,440

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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.1957
Lot (acres)The size of the land the home sits on, from county records.0.12
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(3)

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
Bay Elementary SchoolA-
Elementary · Grades KG–5 · 0.1 mi
H
Arroyo High SchoolB+
High · Grades 9–12 · 0.7 mi
M
Bohannon Middle SchoolC-
Middle · Grades 6–8 · 1.1 mi

District: San Lorenzo Unified School District

Neighborhood · ZIP 94580These 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.45
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.89
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.582

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.7.8%
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.28,849
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,205 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,479
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$130,534
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

1870 Via Rancho 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 81% of homes in Alameda County
  • Costs less per square foot than 71% of homes in Alameda County
  • Smaller than 77% of homes in Alameda County
  • Has a smaller lot than 90% of homes in San Lorenzo 94580
  • Newer than 80% of homes in San Lorenzo 94580

What homes are worth in San Lorenzo 94580

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

This home
$494K$995K

This home is worth more than 20% of homes in San Lorenzo 94580.

How it measures up in San Lorenzo 94580

The dot is this home. The mark in the middle is the typical home in San Lorenzo 94580.

Estimated value$652,498
CheaperTypical $754,652Pricier

Pricier than 20% of homes nearby

Price per ft²$561
CheaperTypical $572Pricier

Pricier than 45% of homes nearby

Living area1,164 ft²
SmallerTypical 1,288 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.11 ac
SmallerTypical 0.12 acBigger

Bigger than 10% of homes nearby

Year built1955
OlderTypical 1951Newer

Newer than 80% of homes nearby

How 1870 Via Rancho ranks against every home in each area.
MeasureThis homeSan Lorenzo 94580Alameda County
Estimated valuepricier than$652,49820% of homes19% of homes
Price per ft²pricier than$56145% of homes29% of homes
Living areabigger than1,164 ft²39% of homes23% of homes
Lot sizebigger than0.11 ac10% of homes29% of homes
Year builtnewer than195580% of homes39% of homes

About 1870 Via Rancho

How much is 1870 Via Rancho, San Lorenzo, CA worth?

The TopHap Estimate for 1870 Via Rancho, San Lorenzo, CA is $652,498 as of Aug 30, 2026. The likely range is $627,506 to $677,490. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1870 Via Rancho, San Lorenzo, CA last sell?

1870 Via Rancho, San Lorenzo, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1870 Via Rancho, San Lorenzo, CA?

1870 Via Rancho, San Lorenzo, CA has 3 bedrooms, 2 bathrooms, 1,164 square feet of living space and a 0.12-acre lot.

When was 1870 Via Rancho, San Lorenzo, CA built?

1870 Via Rancho, San Lorenzo, CA was built in 1955, making it 71 years old. The building has 1 story.

What schools serve 1870 Via Rancho, San Lorenzo, CA?

1870 Via Rancho, San Lorenzo, CA is assigned to Bay Elementary School (elementary), rated A-; Arroyo High School (high), rated B+; Bohannon Middle School (middle), rated C-. All sit in San Lorenzo Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1870 Via Rancho, San Lorenzo, CA compare to other homes in San Lorenzo 94580?

Among the 8,131 homes in San Lorenzo 94580, it is worth more than 20% of them ($652,498 against a typical $754,652), its price per square foot is higher than 45% of them ($561 against a typical $572), it is bigger than 39% of them (1,164 ft² against a typical 1,288 ft²), its lot is bigger than 10% of them (0.11 ac against a typical 0.12 ac) and it is newer than 80% of them (1955 against a typical 1951). Measured against all of Alameda County, it is worth more than 19% 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 1870 Via Rancho, San Lorenzo, CA?

The 2025 property tax bill for 1870 Via Rancho, San Lorenzo, CA was $3,332. The county assessed it at $219,315.

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