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Single Family ResidenceResidential
Last sold for $130,000 on Aug 20, 1996

18521 MARIPOSA AVE

RIVERSIDE, CA 92508
3
Beds
2.5
Baths
1,588 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
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

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$130,000 · Aug 20, 1996
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$750,000
VALLEY BANK · recorded Aug 3, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,344 (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.$214,264 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$58,121
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$156,143
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$210,064
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$505,080

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.Traditional/Old
CountyRIVERSIDE
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.1989
Lot (acres)The size of the land the home sits on, from county records.0.31
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.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.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.

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

M
Frank Augustus Miller Middle SchoolA-
Middle · Grades 7–8 · 0.7 mi
H
Martin Luther King High SchoolA
High · Grades 9–12 · 0.8 mi
E
Mark Twain Elementary SchoolB
Elementary · Grades KG–6 · 1.0 mi

District: Riverside Unified School District

Neighborhood · ZIP 92508These 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.26
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 100.315

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.37,730
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,323 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,856
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$155,505
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.13 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

18521 Mariposa 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.

  • Smaller than 86% of homes in Riverside 92508
  • Has a smaller lot than 78% of homes in Woodcrest
  • Older than 86% of homes in Riverside 92508

How it measures up in Riverside 92508

The dot is this home. The mark in the middle is the typical home in Riverside 92508.

Living area1,588 ft²
SmallerTypical 2,428 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.31 ac
SmallerTypical 0.2 acBigger

Bigger than 77% of homes nearby

Year built1988
OlderTypical 1999Newer

Newer than 14% of homes nearby

How 18521 Mariposa Ave ranks against every home in each area.
MeasureThis homeWoodcrestRiverside 92508Riverside County
Living areabigger than1,588 ft²15% of homes14% of homes39% of homes
Lot sizebigger than0.31 ac22% of homes77% of homes70% of homes
Year builtnewer than198845% of homes14% of homes44% of homes

About 18521 Mariposa Ave

When did 18521 Mariposa Ave, Riverside, CA last sell?

18521 Mariposa Ave, Riverside, CA last sold on Aug 20, 1996 for $130,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18521 Mariposa Ave, Riverside, CA?

18521 Mariposa Ave, Riverside, CA has 3 bedrooms, 2.5 bathrooms, 1,588 square feet of living space and a 0.31-acre lot.

When was 18521 Mariposa Ave, Riverside, CA built?

18521 Mariposa Ave, Riverside, CA was built in 1988, making it 38 years old. It is a traditional/old home. The building has 1 story.

What schools serve 18521 Mariposa Ave, Riverside, CA?

18521 Mariposa Ave, Riverside, CA is assigned to Frank Augustus Miller Middle School (middle), rated A-; Martin Luther King High School (high), rated A; Mark Twain Elementary School (elementary), rated B. All sit in Riverside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18521 Mariposa Ave, Riverside, CA compare to other homes in Riverside 92508?

Among the 10,165 homes in Riverside 92508, it is bigger than 14% of them (1,588 ft² against a typical 2,428 ft²), its lot is bigger than 77% of them (0.31 ac against a typical 0.2 ac) and it is newer than 14% of them (1988 against a typical 1999). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 18521 Mariposa Ave, Riverside, CA?

The 2025 property tax bill for 18521 Mariposa Ave, Riverside, CA was $2,344. The county assessed it at $214,264.

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Assigned schools

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