Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$458,511$416 / 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 80How 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
Last sold for $205,000 on Sep 12, 2011

640 W KNOPF ST

COMPTON, CA 90222
3
Beds
2
Baths
1,103 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1947
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$459K
$367K low$550K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$205,000 · Sep 12, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,490 (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.$294,539 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$148,609
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$145,930
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$288,770

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.1954
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Floor/Wall Furnace
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

Foreclosure Filings(1)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Anderson K - 8 SchoolB
Elementary · Grades KG–8 · 0.3 mi
H
Centennial High SchoolC-
High · Grades 9–12 · 1.0 mi

District: Compton Unified School District

Neighborhood · ZIP 90222These 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.83
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 100.426

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.9.0%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.31,862
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12,514 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,050
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$80,199
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.14 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

Owner Tools

Do you own this home?
Claim this home

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

640 W Knopf 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 less than 92% of homes in Los Angeles County
  • Costs less per square foot than 83% of homes in Los Angeles County
  • Smaller than 83% of homes in Los Angeles County
  • Has a bigger lot than 74% of homes in Compton 90222
  • Older than 74% of homes in Los Angeles County

What homes are worth in Compton 90222

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

This home
$339K$799K

This home is worth more than 27% of homes in Compton 90222.

How it measures up in Compton 90222

The dot is this home. The mark in the middle is the typical home in Compton 90222.

Estimated value$458,511
CheaperTypical $533,406Pricier

Pricier than 27% of homes nearby

Price per ft²$416
CheaperTypical $498Pricier

Pricier than 23% of homes nearby

Living area1,103 ft²
SmallerTypical 1,124 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.14 ac
SmallerTypical 0.12 acBigger

Bigger than 74% of homes nearby

Year built1947
OlderTypical 1950Newer

Newer than 39% of homes nearby

How 640 W Knopf St ranks against every home in each area.
MeasureThis homeCompton 90222Los Angeles County
Estimated valuepricier than$458,51127% of homes8% of homes
Price per ft²pricier than$41623% of homes17% of homes
Living areabigger than1,103 ft²49% of homes17% of homes
Lot sizebigger than0.14 ac74% of homes34% of homes
Year builtnewer than194739% of homes26% of homes

About 640 W Knopf St

How much is 640 W Knopf St, Compton, CA worth?

The TopHap Estimate for 640 W Knopf St, Compton, CA is $458,511 as of Aug 30, 2026. The likely range is $367,097 to $549,925. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 W Knopf St, Compton, CA last sell?

640 W Knopf St, Compton, CA last sold on Sep 12, 2011 for $205,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 640 W Knopf St, Compton, CA?

640 W Knopf St, Compton, CA has 3 bedrooms, 2 bathrooms, 1,103 square feet of living space and a 0.14-acre lot.

When was 640 W Knopf St, Compton, CA built?

640 W Knopf St, Compton, CA was built in 1947, making it 79 years old. The building has 1 story.

What schools serve 640 W Knopf St, Compton, CA?

640 W Knopf St, Compton, CA is assigned to Anderson K - 8 School (elementary), rated B; Centennial High School (high), rated C-. All sit in Compton Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 W Knopf St, Compton, CA compare to other homes in Compton 90222?

Among the 5,733 homes in Compton 90222, it is worth more than 27% of them ($458,511 against a typical $533,406), its price per square foot is higher than 23% of them ($416 against a typical $498), it is bigger than 49% of them (1,103 ft² against a typical 1,124 ft²), its lot is bigger than 74% of them (0.14 ac against a typical 0.12 ac) and it is newer than 39% of them (1947 against a typical 1950). Measured against all of Los Angeles County, it is worth more than 8% 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 640 W Knopf St, Compton, CA?

The 2025 property tax bill for 640 W Knopf St, Compton, CA was $5,490. The county assessed it at $294,539.

More homes on W Knopf St

Closest homes

More homes in Compton 90222

Assigned schools

Explore the area

See this home in context

Open 640 W Knopf St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map