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Single Family ResidenceResidential
$567,702$328 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $375,000 on Sep 23, 2005

9527 MASON ST

RIVERSIDE, CA 92503
4
Beds
2
Baths
1,729 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1951
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

$568K
$528K low$607K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$375,000 · Sep 23, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,751 (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.$522,694 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$174,227
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$348,467
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$512,446

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.0.21
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(2)

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
Liberty Elementary SchoolD+
Elementary · Grades KG–6 · 0.1 mi
M
Chemawa Middle SchoolC-
Middle · Grades 7–8 · 0.9 mi
H
Arlington High SchoolC+
High · Grades 9–12 · 1.3 mi

District: Riverside 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%

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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

9527 Mason 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.

  • Costs less per square foot than 85% of homes in Arlington
  • Bigger than 81% of homes in Arlington
  • Older than 95% 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
$372K$1.2M

This home is worth more than 39% 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$567,702
CheaperTypical $596,407Pricier

Pricier than 39% of homes nearby

Price per ft²$328
CheaperTypical $374Pricier

Pricier than 29% of homes nearby

Living area1,729 ft²
SmallerTypical 1,536 ft²Bigger

Bigger than 60% of homes nearby

Lot size0.21 ac
SmallerTypical 0.19 acBigger

Bigger than 64% of homes nearby

Year built1951
OlderTypical 1978Newer

Newer than 6% of homes nearby

How 9527 Mason St ranks against every home in each area.
MeasureThis homeArlingtonRiverside 92503Riverside County
Estimated valuepricier than$567,70263% of homes39% of homes45% of homes
Price per ft²pricier than$32815% of homes29% of homes55% of homes
Living areabigger than1,729 ft²81% of homes60% of homes46% of homes
Lot sizebigger than0.21 ac58% of homes64% of homes57% of homes
Year builtnewer than195127% of homes6% of homes5% of homes

About 9527 Mason St

How much is 9527 Mason St, Riverside, CA worth?

The TopHap Estimate for 9527 Mason St, Riverside, CA is $567,702 as of Oct 21, 2026. The likely range is $528,288 to $607,116. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9527 Mason St, Riverside, CA last sell?

9527 Mason St, Riverside, CA last sold on Sep 23, 2005 for $375,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9527 Mason St, Riverside, CA?

9527 Mason St, Riverside, CA has 4 bedrooms, 2 bathrooms, 1,729 square feet of living space and a 0.21-acre lot.

When was 9527 Mason St, Riverside, CA built?

9527 Mason St, Riverside, CA was built in 1951, making it 75 years old. The building has 1 story.

What schools serve 9527 Mason St, Riverside, CA?

9527 Mason St, Riverside, CA is assigned to Liberty Elementary School (elementary), rated D+; Chemawa Middle School (middle), rated C-; Arlington High School (high), rated C+. All sit in Riverside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9527 Mason St, Riverside, CA compare to other homes in Riverside 92503?

Among the 21,428 homes in Riverside 92503, it is worth more than 39% of them ($567,702 against a typical $596,407), its price per square foot is higher than 29% of them ($328 against a typical $374), it is bigger than 60% of them (1,729 ft² against a typical 1,536 ft²), its lot is bigger than 64% of them (0.21 ac against a typical 0.19 ac) and it is newer than 6% of them (1951 against a typical 1978). Measured against all of Riverside County, it is worth more than 45% 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 9527 Mason St, Riverside, CA?

The 2025 property tax bill for 9527 Mason St, Riverside, CA was $5,751. The county assessed it at $522,694.

More homes on Mason St

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Assigned schools

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