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Single Family ResidenceResidential
$449,891$243 / 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 96How 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
Last sold for $235,500 on Apr 14, 2016

18421 ALDER ST

HESPERIA, CA 92345
4
Beds
2
Baths
1,852 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.
0.45 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$450K
$433K low$467K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$235,500 · Apr 14, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,294 (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.$303,461 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,187
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$273,274

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.Modern
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.45
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 171 ft²

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
Carmel Elementary SchoolD+
Elementary · Grades KG–6 · 3.0 mi
H
Sultana High SchoolC
High · Grades 9–12 · 3.8 mi
M
Ranchero Middle SchoolD-
Middle · Grades 7–8 · 5.5 mi

District: Hesperia Unified School District

Neighborhood · ZIP 92345These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.96
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.347

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.7.4%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.17%
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.89,476
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.799 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,309
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$80,179
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.19 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

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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

18421 Alder 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 67% of homes in San Bernardino County
  • Costs less per square foot than 82% of homes in San Bernardino County
  • Has a bigger lot than 81% of homes in San Bernardino County
  • Newer than 91% of homes in Hesperia 92345

What homes are worth in Hesperia 92345

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

This home
$286K$643K

This home is worth more than 57% of homes in Hesperia 92345.

How it measures up in Hesperia 92345

The dot is this home. The mark in the middle is the typical home in Hesperia 92345.

Estimated value$449,891
CheaperTypical $436,977Pricier

Pricier than 57% of homes nearby

Price per ft²$243
CheaperTypical $266Pricier

Pricier than 28% of homes nearby

Living area1,852 ft²
SmallerTypical 1,657 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.45 ac
SmallerTypical 0.46 acBigger

Bigger than 41% of homes nearby

Year built2007
OlderTypical 1987Newer

Newer than 91% of homes nearby

How 18421 Alder St ranks against every home in each area.
MeasureThis homeHesperia 92345San Bernardino County
Estimated valuepricier than$449,89157% of homes33% of homes
Price per ft²pricier than$24328% of homes18% of homes
Living areabigger than1,852 ft²64% of homes64% of homes
Lot sizebigger than0.45 ac41% of homes81% of homes
Year builtnewer than200791% of homes90% of homes

About 18421 Alder St

How much is 18421 Alder St, Hesperia, CA worth?

The TopHap Estimate for 18421 Alder St, Hesperia, CA is $449,891 as of Sep 24, 2026. The likely range is $432,508 to $467,274. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18421 Alder St, Hesperia, CA last sell?

18421 Alder St, Hesperia, CA last sold on Apr 14, 2016 for $235,500, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 18421 Alder St, Hesperia, CA?

18421 Alder St, Hesperia, CA has 4 bedrooms, 2 bathrooms, 1,852 square feet of living space and a 0.45-acre lot.

When was 18421 Alder St, Hesperia, CA built?

18421 Alder St, Hesperia, CA was built in 2007, making it 19 years old. It is a modern home. The building has 1 story.

What schools serve 18421 Alder St, Hesperia, CA?

18421 Alder St, Hesperia, CA is assigned to Carmel Elementary School (elementary), rated D+; Sultana High School (high), rated C; Ranchero Middle School (middle), rated D-. All sit in Hesperia Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18421 Alder St, Hesperia, CA compare to other homes in Hesperia 92345?

Among the 23,578 homes in Hesperia 92345, it is worth more than 57% of them ($449,891 against a typical $436,977), its price per square foot is higher than 28% of them ($243 against a typical $266), it is bigger than 64% of them (1,852 ft² against a typical 1,657 ft²), its lot is bigger than 41% of them (0.45 ac against a typical 0.46 ac) and it is newer than 91% of them (2007 against a typical 1987). Measured against all of San Bernardino County, it is worth more than 33% 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 18421 Alder St, Hesperia, CA?

The 2025 property tax bill for 18421 Alder St, Hesperia, CA was $3,294. The county assessed it at $303,461.

More homes on Alder St

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Assigned schools

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