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Single Family ResidenceResidential
$374,624$657 / 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 90How 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 $235,000 on Jul 26, 2006

521 ERWIN ST

CALIMESA, CA 92320
1
Beds
1
Baths
570 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1944
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$375K
$339K low$410K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$235,000 · Jul 26, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,796 (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.$321,118 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$136,644
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$184,474
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$314,822
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$245,520

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.Contemporary
CountyRIVERSIDE
Lot (acres)The size of the land the home sits on, from county records.0.19
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.Rock / Gravel
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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
Mesa View Middle SchoolC+
Middle · Grades 6–8 · 0.8 mi
E
Calimesa Elementary SchoolC-
Elementary · Grades KG–5 · 0.9 mi
H
Yucaipa High SchoolA
High · Grades 9–12 · 2.9 mi

District: Yucaipa-Calimesa Joint Unified School District

Neighborhood · ZIP 92320These 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.82
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.452

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
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.11,115
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.938 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,404
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,032
Average tempThe average temperature here across a full year.62°F
Annual precipHow much rain and melted snow falls here in a typical year.17 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

521 Erwin 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 96% of homes in Calimesa 92320
  • Among the highest price per square foot in Calimesa 92320
  • Among the smallest homes in Calimesa 92320
  • Has a smaller lot than 68% of homes in Calimesa 92320
  • Older than 98% of homes in Calimesa 92320

What homes are worth in Calimesa 92320

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

This home
$328K$876K

This home is worth more than 4% of homes in Calimesa 92320.

How it measures up in Calimesa 92320

The dot is this home. The mark in the middle is the typical home in Calimesa 92320.

Estimated value$374,624
CheaperTypical $567,219Pricier

Pricier than 4% of homes nearby

Price per ft²$657
CheaperTypical $303Pricier

Pricier than almost all homes nearby

Living area570 ft²
SmallerTypical 1,736 ft²Bigger

Smaller than almost all homes nearby

Lot size0.19 ac
SmallerTypical 0.24 acBigger

Bigger than 32% of homes nearby

Year built1944
OlderTypical 1987Newer

Newer than 2% of homes nearby

How 521 Erwin St ranks against every home in each area.
MeasureThis homeCalimesa 92320Riverside County
Estimated valuepricier than$374,6244% of homes11% of homes
Price per ft²pricier than$657almost all homes98% of homes
Living areabigger than570 ft²almost no homesalmost no homes
Lot sizebigger than0.19 ac32% of homes46% of homes
Year builtnewer than19442% of homes3% of homes

About 521 Erwin St

How much is 521 Erwin St, Calimesa, CA worth?

The TopHap Estimate for 521 Erwin St, Calimesa, CA is $374,624 as of Sep 24, 2026. The likely range is $339,031 to $410,217. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Erwin St, Calimesa, CA last sell?

521 Erwin St, Calimesa, CA last sold on Jul 26, 2006 for $235,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 521 Erwin St, Calimesa, CA?

521 Erwin St, Calimesa, CA has 1 bedrooms, 1 bathrooms, 570 square feet of living space and a 0.19-acre lot.

When was 521 Erwin St, Calimesa, CA built?

521 Erwin St, Calimesa, CA was built in 1944, making it 82 years old. It is a contemporary home. The building has 1 story.

What schools serve 521 Erwin St, Calimesa, CA?

521 Erwin St, Calimesa, CA is assigned to Mesa View Middle School (middle), rated C+; Calimesa Elementary School (elementary), rated C-; Yucaipa High School (high), rated A. All sit in Yucaipa-Calimesa Joint Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Erwin St, Calimesa, CA compare to other homes in Calimesa 92320?

Among the 4,325 homes in Calimesa 92320, it is worth more than 4% of them ($374,624 against a typical $567,219), its price per square foot is higher than almost all of them ($657 against a typical $303), it is bigger than almost none of them (570 ft² against a typical 1,736 ft²), its lot is bigger than 32% of them (0.19 ac against a typical 0.24 ac) and it is newer than 2% of them (1944 against a typical 1987). Measured against all of Riverside County, it is worth more than 11% 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 521 Erwin St, Calimesa, CA?

The 2025 property tax bill for 521 Erwin St, Calimesa, CA was $3,796. The county assessed it at $321,118.

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