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Single Family ResidenceResidential
$2,007,550$338 / 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 86How 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

664 ALAMEDA ST

ALTADENA, CA 91001
5
Beds
6
Baths
5,944 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.
1.09 ac
Lot SizeThe size of the land the home sits on, from county records.
1928
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
16
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2M
$1.7M low$2.3M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$19,812 (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.$1,720,519 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$722,534
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$997,985
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,686,784

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.Tudor
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.1940
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(8)

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
Altadena Arts Magnet SchoolC+
Elementary · Grades KG–5 · 0.2 mi
M
Charles W. Eliot Arts Magnet AcademyD
Middle · Grades 6–8 · 0.4 mi
H
John Muir High SchoolC-
High · Grades 9–12 · 1.4 mi

District: Pasadena Unified School District

Neighborhood · ZIP 91001These 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.56
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.728

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.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.34,397
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,046 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,057
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$176,224
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

664 Alameda 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.

  • Worth more than 94% of homes in Altadena
  • Among the lowest price per square foot in Altadena
  • Among the largest homes in Altadena
  • Among the largest lots in Altadena
  • Older than 87% of homes in Los Angeles County

What homes are worth in Altadena 91001

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

This home
$588K$2.8M

This home is worth more than 94% of homes in Altadena 91001.

How it measures up in Altadena 91001

The dot is this home. The mark in the middle is the typical home in Altadena 91001.

Estimated value$2,007,550
CheaperTypical $1,025,785Pricier

Pricier than 94% of homes nearby

Price per ft²$338
CheaperTypical $662Pricier

Cheaper than almost all homes nearby

Living area5,944 ft²
SmallerTypical 1,616 ft²Bigger

Bigger than almost all homes nearby

Lot size1.09 ac
SmallerTypical 0.2 acBigger

Bigger than almost all homes nearby

Year built1928
OlderTypical 1947Newer

Newer than 28% of homes nearby

How 664 Alameda St ranks against every home in each area.
MeasureThis homeAltadenaAltadena 91001Los Angeles County
Estimated valuepricier than$2,007,55094% of homes94% of homes91% of homes
Price per ft²pricier than$338almost no homesalmost no homes7% of homes
Living areabigger than5,944 ft²almost all homesalmost all homes98% of homes
Lot sizebigger than1.09 acalmost all homesalmost all homes91% of homes
Year builtnewer than192828% of homes28% of homes13% of homes

About 664 Alameda St

How much is 664 Alameda St, Altadena, CA worth?

The TopHap Estimate for 664 Alameda St, Altadena, CA is $2,007,550 as of Sep 24, 2026. The likely range is $1,733,249 to $2,281,851. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 664 Alameda St, Altadena, CA last sell?

664 Alameda St, Altadena, CA last sold on May 15, 2003, according to the county's recorded deed.

How big is 664 Alameda St, Altadena, CA?

664 Alameda St, Altadena, CA has 5 bedrooms, 6 bathrooms and 5,944 square feet of living space.

When was 664 Alameda St, Altadena, CA built?

664 Alameda St, Altadena, CA was built in 1928, making it 98 years old. It is a tudor home. The building has 2 stories.

What schools serve 664 Alameda St, Altadena, CA?

664 Alameda St, Altadena, CA is assigned to Altadena Arts Magnet School (elementary), rated C+; Charles W. Eliot Arts Magnet Academy (middle), rated D; John Muir High School (high), rated C-. All sit in Pasadena Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 664 Alameda St, Altadena, CA compare to other homes in Altadena 91001?

Among the 11,174 homes in Altadena 91001, it is worth more than 94% of them ($2,007,550 against a typical $1,025,785), its price per square foot is higher than almost none of them ($338 against a typical $662), it is bigger than almost all of them (5,944 ft² against a typical 1,616 ft²), its lot is bigger than almost all of them (1.09 ac against a typical 0.2 ac) and it is newer than 28% of them (1928 against a typical 1947). Measured against all of Los Angeles County, it is worth more than 91% 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 664 Alameda St, Altadena, CA?

The 2025 property tax bill for 664 Alameda St, Altadena, CA was $19,812. The county assessed it at $1,720,519.

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