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Single Family ResidenceResidential
$538,119$571 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

4218 MARIPOSA AVE

RIVERSIDE, CA 92503
3
Beds
1
Baths
942 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1956
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$538K
$510K low$567K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$538,119
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$430,495

Tax & Assessment

Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$423,090

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyRIVERSIDE
Lot (acres)The size of the land the home sits on, from county records.0.18
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.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Myra Linn Elementary SchoolC
Elementary · Grades KG–5 · 0.5 mi
H
La Sierra High SchoolC-
High · Grades 9–12 · 1.2 mi
M
Arizona Middle SchoolB-
Middle · Grades 6–8 · 2.0 mi

District: Alvord Unified School District

Neighborhood · ZIP 92503These 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.57
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.290

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.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.5%
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.96,024
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,949 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,069
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,138
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.12 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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

4218 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.

  • Worth less than 75% of homes in Riverside 92503
  • Costs more per square foot than 98% of homes in Riverside 92503
  • Smaller than 95% of homes in Riverside 92503
  • Older than 93% of homes in Riverside County

What homes are worth in Riverside 92503

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

This home
$383K$1.1M

This home is worth more than 25% of homes in Riverside 92503.

How it measures up in Riverside 92503

The dot is this home. The mark in the middle is the typical home in Riverside 92503.

Estimated value$538,119
CheaperTypical $598,757Pricier

Pricier than 25% of homes nearby

Price per ft²$571
CheaperTypical $381Pricier

Pricier than 98% of homes nearby

Living area942 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.18 ac
SmallerTypical 0.19 acBigger

Bigger than 49% of homes nearby

Year built1956
OlderTypical 1978Newer

Newer than 15% of homes nearby

How 4218 Mariposa Ave ranks against every home in each area.
MeasureThis homeArlingtonRiverside 92503Riverside County
Estimated valuepricier than$538,11952% of homes25% of homes40% of homes
Price per ft²pricier than$57195% of homes98% of homes97% of homes
Living areabigger than942 ft²18% of homes5% of homes5% of homes
Lot sizebigger than0.18 ac39% of homes49% of homes45% of homes
Year builtnewer than195646% of homes15% of homes7% of homes

About 4218 Mariposa Ave

How much is 4218 Mariposa Ave, Riverside, CA worth?

The TopHap Estimate for 4218 Mariposa Ave, Riverside, CA is $538,119 as of Jul 14, 2026. The likely range is $509,686 to $566,552. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4218 Mariposa Ave, Riverside, CA last sell?

4218 Mariposa Ave, Riverside, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4218 Mariposa Ave, Riverside, CA?

4218 Mariposa Ave, Riverside, CA has 3 bedrooms, 1 bathrooms, 942 square feet of living space and a 0.18-acre lot.

When was 4218 Mariposa Ave, Riverside, CA built?

4218 Mariposa Ave, Riverside, CA was built in 1956, making it 70 years old. The building has 1 story.

What schools serve 4218 Mariposa Ave, Riverside, CA?

4218 Mariposa Ave, Riverside, CA is assigned to Myra Linn Elementary School (elementary), rated C; La Sierra High School (high), rated C-; Arizona Middle School (middle), rated B-. All sit in Alvord Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4218 Mariposa Ave, Riverside, CA compare to other homes in Riverside 92503?

Among the 21,423 homes in Riverside 92503, it is worth more than 25% of them ($538,119 against a typical $598,757), its price per square foot is higher than 98% of them ($571 against a typical $381), it is bigger than 5% of them (942 ft² against a typical 1,540 ft²), its lot is bigger than 49% of them (0.18 ac against a typical 0.19 ac) and it is newer than 15% of them (1956 against a typical 1978). Measured against all of Riverside County, it is worth more than 40% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Mariposa Ave

Closest homes

More homes in Riverside 92503

Assigned schools

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