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Single Family ResidenceResidential
$745,844$362 / 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

4370 RIOLANI PL

NORCO, CA 92860
3
Beds
2.3
Baths
2,062 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.
0.81 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
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

$746K
$673K low$818K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,075 (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.$102,305 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,782
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$76,523
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$100,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$591,660

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Single Family Residence
CountyRIVERSIDE
Lot (acres)The size of the land the home sits on, from county records.0.81
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.Wood Shingle
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, Detached
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.

E
Highland Elementary SchoolA
Elementary · Grades KG–6 · 0.4 mi
M
Norco Intermediate SchoolB-
Middle · Grades 7–8 · 1.9 mi
H
Norco High SchoolB-
High · Grades 9–12 · 2.4 mi

District: Corona-Norco Unified School District

Neighborhood · ZIP 92860These 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.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.360

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.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.27,720
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,990 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$122,196
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$139,314
Average tempThe average temperature here across a full year.64°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%

Owner Tools

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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

4370 Riolani Pl 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 80% of homes in Norco 92860
  • Costs less per square foot than 86% of homes in Norco 92860
  • Has a bigger lot than 84% of homes in Norco 92860
  • Older than 90% of homes in Riverside County

What homes are worth in Norco 92860

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

This home
$554K$1.5M

This home is worth more than 20% of homes in Norco 92860.

How it measures up in Norco 92860

The dot is this home. The mark in the middle is the typical home in Norco 92860.

Estimated value$745,844
CheaperTypical $901,358Pricier

Pricier than 20% of homes nearby

Price per ft²$362
CheaperTypical $448Pricier

Pricier than 14% of homes nearby

Living area2,062 ft²
SmallerTypical 1,979 ft²Bigger

Bigger than 54% of homes nearby

Lot size0.81 ac
SmallerTypical 0.5 acBigger

Bigger than 84% of homes nearby

Year built1960
OlderTypical 1974Newer

Newer than 21% of homes nearby

How 4370 Riolani Pl ranks against every home in each area.
MeasureThis homeNorco 92860Riverside County
Estimated valuepricier than$745,84420% of homes75% of homes
Price per ft²pricier than$36214% of homes68% of homes
Living areabigger than2,062 ft²54% of homes62% of homes
Lot sizebigger than0.81 ac84% of homes82% of homes
Year builtnewer than196021% of homes10% of homes

About 4370 Riolani Pl

How much is 4370 Riolani Pl, Norco, CA worth?

The TopHap Estimate for 4370 Riolani Pl, Norco, CA is $745,844 as of Sep 24, 2026. The likely range is $673,215 to $818,473. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4370 Riolani Pl, Norco, CA last sell?

4370 Riolani Pl, Norco, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4370 Riolani Pl, Norco, CA?

4370 Riolani Pl, Norco, CA has 3 bedrooms, 2.3 bathrooms, 2,062 square feet of living space and a 0.81-acre lot.

When was 4370 Riolani Pl, Norco, CA built?

4370 Riolani Pl, Norco, CA was built in 1960, making it 66 years old. The building has 1 story.

What schools serve 4370 Riolani Pl, Norco, CA?

4370 Riolani Pl, Norco, CA is assigned to Highland Elementary School (elementary), rated A; Norco Intermediate School (middle), rated B-; Norco High School (high), rated B-. All sit in Corona-Norco Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4370 Riolani Pl, Norco, CA compare to other homes in Norco 92860?

Among the 6,814 homes in Norco 92860, it is worth more than 20% of them ($745,844 against a typical $901,358), its price per square foot is higher than 14% of them ($362 against a typical $448), it is bigger than 54% of them (2,062 ft² against a typical 1,979 ft²), its lot is bigger than 84% of them (0.81 ac against a typical 0.5 ac) and it is newer than 21% of them (1960 against a typical 1974). Measured against all of Riverside County, it is worth more than 75% 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 4370 Riolani Pl, Norco, CA?

The 2025 property tax bill for 4370 Riolani Pl, Norco, CA was $1,075. The county assessed it at $102,305.

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