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Triplex (3 Units, Any Combination)Residential

22431 RUBY ST

CASTRO VALLEY, CA 94546
2
Beds
1
Baths
777 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1895
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$143,500
UNION FED'L BANK INDIANAPOLIS · recorded Jun 26, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,767 (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.$284,803 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$68,795
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$216,008
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$279,220

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Triplex (3 Units, Any Combination)
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.1919
Lot (acres)The size of the land the home sits on, from county records.0.17
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(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.

H
Hayward High SchoolC
High · Grades 9–12 · 0.8 mi
M
Bret Harte Middle SchoolC-
Middle · Grades 7–8 · 0.8 mi
E
Fairview Elementary SchoolD-
Elementary · Grades KG–6 · 1.4 mi

District: Hayward Unified School District

Neighborhood · ZIP 94546These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.657

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.46,776
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,466 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,352
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$142,642
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.23 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

22431 Ruby 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.

  • Among the smallest homes in Castro Valley
  • Has a bigger lot than 68% of homes in Alameda County
  • Among the oldest homes in Castro Valley

How it measures up in Castro Valley 94546

The dot is this home. The mark in the middle is the typical home in Castro Valley 94546.

Living area777 ft²
SmallerTypical 1,548 ft²Bigger

Smaller than almost all homes nearby

Lot size0.17 ac
SmallerTypical 0.16 acBigger

Bigger than 60% of homes nearby

Year built1895
OlderTypical 1955Newer

Older than almost all homes nearby

How 22431 Ruby St ranks against every home in each area.
MeasureThis homeCastro ValleyCastro Valley 94546Alameda County
Living areabigger than777 ft²almost no homesalmost no homes4% of homes
Lot sizebigger than0.17 ac63% of homes60% of homes68% of homes
Year builtnewer than1895almost no homesalmost no homesalmost no homes

About 22431 Ruby St

When did 22431 Ruby St, Castro Valley, CA last sell?

22431 Ruby St, Castro Valley, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 22431 Ruby St, Castro Valley, CA?

22431 Ruby St, Castro Valley, CA has 2 bedrooms, 1 bathrooms, 777 square feet of living space and a 0.17-acre lot.

When was 22431 Ruby St, Castro Valley, CA built?

22431 Ruby St, Castro Valley, CA was built in 1895, making it 131 years old. The building has 1 story.

What schools serve 22431 Ruby St, Castro Valley, CA?

22431 Ruby St, Castro Valley, CA is assigned to Hayward High School (high), rated C; Bret Harte Middle School (middle), rated C-; Fairview Elementary School (elementary), rated D-. All sit in Hayward Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 22431 Ruby St, Castro Valley, CA compare to other homes in Castro Valley 94546?

Among the 13,493 homes in Castro Valley 94546, it is bigger than almost none of them (777 ft² against a typical 1,548 ft²), its lot is bigger than 60% of them (0.17 ac against a typical 0.16 ac) and it is newer than almost none of them (1895 against a typical 1955). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 22431 Ruby St, Castro Valley, CA?

The 2025 property tax bill for 22431 Ruby St, Castro Valley, CA was $5,767. The county assessed it at $284,803.

Closest homes

More homes in Castro Valley 94546

Assigned schools

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