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Single Family ResidenceResidential
$657,088$570 / 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 92How 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

643 ROSSMORE LN

HAYWARD, CA 94544
3
Beds
2
Baths
1,153 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$657K
$604K low$710K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,826 (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.$126,023 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$71,403
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$61,620
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$123,415
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$705,870

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
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.1959
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(5)

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
Park Elementary SchoolD-
Elementary · Grades KG–6 · 0.4 mi
M
Winton Middle SchoolD
Middle · Grades 7–8 · 0.9 mi
H
Mount Eden High SchoolC+
High · Grades 9–12 · 1.6 mi

District: Hayward Unified School District

Neighborhood · ZIP 94544These 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.74
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.615

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.7%
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.78,842
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,902 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$95,392
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$122,897
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

643 Rossmore Ln 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 69% of homes in Alameda County
  • Smaller than 77% of homes in Alameda County
  • Has a smaller lot than 80% of homes in Santa Clara
  • Newer than 65% of homes in Santa Clara

What homes are worth in Hayward 94544

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

This home
$382K$1.6M

This home is worth more than 22% of homes in Hayward 94544.

How it measures up in Hayward 94544

The dot is this home. The mark in the middle is the typical home in Hayward 94544.

Estimated value$657,088
CheaperTypical $779,107Pricier

Pricier than 22% of homes nearby

Price per ft²$570
CheaperTypical $586Pricier

Pricier than 44% of homes nearby

Living area1,153 ft²
SmallerTypical 1,335 ft²Bigger

Bigger than 31% of homes nearby

Lot size0.12 ac
SmallerTypical 0.13 acBigger

Bigger than 30% of homes nearby

Year built1958
OlderTypical 1957Newer

Newer than 55% of homes nearby

How 643 Rossmore Ln ranks against every home in each area.
MeasureThis homeSanta ClaraHayward 94544Alameda County
Estimated valuepricier than$657,08836% of homes22% of homes19% of homes
Price per ft²pricier than$57067% of homes44% of homes31% of homes
Living areabigger than1,153 ft²34% of homes31% of homes23% of homes
Lot sizebigger than0.12 ac20% of homes30% of homes33% of homes
Year builtnewer than195865% of homes55% of homes43% of homes

About 643 Rossmore Ln

How much is 643 Rossmore Ln, Hayward, CA worth?

The TopHap Estimate for 643 Rossmore Ln, Hayward, CA is $657,088 as of Sep 24, 2026. The likely range is $604,394 to $709,782. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 643 Rossmore Ln, Hayward, CA last sell?

643 Rossmore Ln, Hayward, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 643 Rossmore Ln, Hayward, CA?

643 Rossmore Ln, Hayward, CA has 3 bedrooms, 2 bathrooms, 1,153 square feet of living space and a 0.12-acre lot.

When was 643 Rossmore Ln, Hayward, CA built?

643 Rossmore Ln, Hayward, CA was built in 1958, making it 68 years old. It is a custom design home. The building has 1 story.

What schools serve 643 Rossmore Ln, Hayward, CA?

643 Rossmore Ln, Hayward, CA is assigned to Park Elementary School (elementary), rated D-; Winton Middle School (middle), rated D; Mount Eden High School (high), rated C+. All sit in Hayward Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 643 Rossmore Ln, Hayward, CA compare to other homes in Hayward 94544?

Among the 15,625 homes in Hayward 94544, it is worth more than 22% of them ($657,088 against a typical $779,107), its price per square foot is higher than 44% of them ($570 against a typical $586), it is bigger than 31% of them (1,153 ft² against a typical 1,335 ft²), its lot is bigger than 30% of them (0.12 ac against a typical 0.13 ac) and it is newer than 55% of them (1958 against a typical 1957). 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 643 Rossmore Ln, Hayward, CA?

The 2025 property tax bill for 643 Rossmore Ln, Hayward, CA was $1,826. The county assessed it at $126,023.

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