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Duplex (2 Units, Any Combination)Residential
Last sold for $45,500 on Apr 24, 2023

12045 KOSTOPOLOUS AVE

BORON, CA 93516
3
Beds
1
Baths
1,688 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.
0.47 ac
Lot SizeThe size of the land the home sits on, from county records.
1945
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$45,500 · Apr 24, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$932 (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.$48,284 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$10,612
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$37,672
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$47,338

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.51
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
77
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
1
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
98
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyKERN
Lot (acres)The size of the land the home sits on, from county records.0.47
ConstructionThe main material the home's frame and walls are built from.Frame (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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 165 ft²

Transaction History(4)

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.

M
Boron Junior-Senior High SchoolD-
Middle · Grades 7–12 · 0.7 mi
E
West Boron Elementary SchoolD-
Elementary · Grades KG–6 · 2.9 mi

District: Muroc Joint Unified School District

Neighborhood · ZIP 93516These 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.173
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.171

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.82%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.2.2%
PopulationHow many people live in this area.2,697
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.12 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$62,429
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,050
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.5 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.71%

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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

12045 Kostopolous 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.

  • Bigger than 87% of homes in Boron 93516
  • Has a bigger lot than 88% of homes in Kern County
  • Older than 91% of homes in Kern County

How it measures up in Boron 93516

The dot is this home. The mark in the middle is the typical home in Boron 93516.

Living area1,688 ft²
SmallerTypical 1,150 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.47 ac
SmallerTypical 0.24 acBigger

Bigger than 86% of homes nearby

Year built1945
OlderTypical 1957Newer

Newer than 12% of homes nearby

How 12045 Kostopolous Ave ranks against every home in each area.
MeasureThis homeBoron 93516Kern County
Living areabigger than1,688 ft²87% of homes60% of homes
Lot sizebigger than0.47 ac86% of homes88% of homes
Year builtnewer than194512% of homes9% of homes

About 12045 Kostopolous Ave

When did 12045 Kostopolous Ave, Boron, CA last sell?

12045 Kostopolous Ave, Boron, CA last sold on Apr 24, 2023 for $45,500, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 12045 Kostopolous Ave, Boron, CA?

12045 Kostopolous Ave, Boron, CA has 3 bedrooms, 1 bathrooms, 1,688 square feet of living space and a 0.47-acre lot.

When was 12045 Kostopolous Ave, Boron, CA built?

12045 Kostopolous Ave, Boron, CA was built in 1945, making it 81 years old. It is a duplex single home. The building has 1 story.

What schools serve 12045 Kostopolous Ave, Boron, CA?

12045 Kostopolous Ave, Boron, CA is assigned to Boron Junior-Senior High School (middle), rated D-; West Boron Elementary School (elementary), rated D-. All sit in Muroc Joint Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12045 Kostopolous Ave, Boron, CA compare to other homes in Boron 93516?

Among the 911 homes in Boron 93516, it is bigger than 87% of them (1,688 ft² against a typical 1,150 ft²), its lot is bigger than 86% of them (0.47 ac against a typical 0.24 ac) and it is newer than 12% of them (1945 against a typical 1957). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 12045 Kostopolous Ave, Boron, CA?

The 2025 property tax bill for 12045 Kostopolous Ave, Boron, CA was $932. The county assessed it at $48,284.

More homes on Kostopolous Ave

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