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Single Family ResidenceResidential
$4,137,035$708 / 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 84How 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 $640,000 on Jun 15, 2001

421 LOS ALTOS AVE

ARCADIA, CA 91007
4
Beds
5
Baths
5,844 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.
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.
2008
Year BuiltThe year the home was originally built, according to county records.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$4.1M
$3.5M low$4.8M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$640,000 · Jun 15, 2001

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$24,077 (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.$2,093,342 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$708,231
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,385,111
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,052,297

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyLOS ANGELES
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.2009
Lot (acres)The size of the land the home sits on, from county records.0.49
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(7)

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
Longley Way Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Richard Henry Dana Middle SchoolA
Middle · Grades 6–8 · 1.4 mi
H
Arcadia High SchoolA
High · Grades 9–12 · 1.4 mi

District: Arcadia Unified School District

Neighborhood · ZIP 91007These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.567

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.32,512
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,192 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$92,500
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,443
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.18 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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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

421 Los Altos Ave 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 98% of homes in Los Angeles County
  • Costs more per square foot than 73% of homes in Los Angeles County
  • Bigger than 97% of homes in Los Angeles County
  • Has a bigger lot than 86% of homes in Santa Anita Colony
  • Newer than 96% of homes in Los Angeles County

What homes are worth in Arcadia 91007

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

This home
$663K$4.6M

This home is worth more than 97% of homes in Arcadia 91007.

How it measures up in Arcadia 91007

The dot is this home. The mark in the middle is the typical home in Arcadia 91007.

Estimated value$4,137,035
CheaperTypical $1,479,029Pricier

Pricier than 97% of homes nearby

Price per ft²$708
CheaperTypical $682Pricier

Pricier than 55% of homes nearby

Living area5,844 ft²
SmallerTypical 2,001 ft²Bigger

Bigger than 93% of homes nearby

Lot size0.49 ac
SmallerTypical 0.33 acBigger

Bigger than 69% of homes nearby

Year built2008
OlderTypical 1966Newer

Newer than 90% of homes nearby

How 421 Los Altos Ave ranks against every home in each area.
MeasureThis homeSanta Anita ColonyArcadia 91007Los Angeles County
Estimated valuepricier than$4,137,03596% of homes97% of homes98% of homes
Price per ft²pricier than$70860% of homes55% of homes73% of homes
Living areabigger than5,844 ft²93% of homes93% of homes97% of homes
Lot sizebigger than0.49 ac86% of homes69% of homes84% of homes
Year builtnewer than200889% of homes90% of homes96% of homes

About 421 Los Altos Ave

How much is 421 Los Altos Ave, Arcadia, CA worth?

The TopHap Estimate for 421 Los Altos Ave, Arcadia, CA is $4,137,035 as of Oct 21, 2026. The likely range is $3,494,442 to $4,779,628. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Los Altos Ave, Arcadia, CA last sell?

421 Los Altos Ave, Arcadia, CA last sold on Jun 15, 2001 for $640,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Los Altos Ave, Arcadia, CA?

421 Los Altos Ave, Arcadia, CA has 4 bedrooms, 5 bathrooms, 5,844 square feet of living space and a 0.49-acre lot.

When was 421 Los Altos Ave, Arcadia, CA built?

421 Los Altos Ave, Arcadia, CA was built in 2008, making it 18 years old.

What schools serve 421 Los Altos Ave, Arcadia, CA?

421 Los Altos Ave, Arcadia, CA is assigned to Longley Way Elementary School (elementary), rated A; Richard Henry Dana Middle School (middle), rated A; Arcadia High School (high), rated A. All sit in Arcadia Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Los Altos Ave, Arcadia, CA compare to other homes in Arcadia 91007?

Among the 8,635 homes in Arcadia 91007, it is worth more than 97% of them ($4,137,035 against a typical $1,479,029), its price per square foot is higher than 55% of them ($708 against a typical $682), it is bigger than 93% of them (5,844 ft² against a typical 2,001 ft²), its lot is bigger than 69% of them (0.49 ac against a typical 0.33 ac) and it is newer than 90% of them (2008 against a typical 1966). Measured against all of Los Angeles County, it is worth more than 98% 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 421 Los Altos Ave, Arcadia, CA?

The 2025 property tax bill for 421 Los Altos Ave, Arcadia, CA was $24,077. The county assessed it at $2,093,342.

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