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Single Family ResidenceResidential
$672,912$350 / 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 94How 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

4280 MERCURY CT

RIVERSIDE, CA 92505
4
Beds
2
Baths
1,925 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$673K
$634K low$712K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$255 (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.$195,275 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$55,486
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$139,789
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$191,448
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$823,950

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
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.1980
Lot (acres)The size of the land the home sits on, from county records.0.26
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

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
Myra Linn Elementary SchoolC
Elementary · Grades KG–5 · 0.2 mi
H
La Sierra High SchoolC-
High · Grades 9–12 · 0.8 mi
M
Arizona Middle SchoolB-
Middle · Grades 6–8 · 1.8 mi

District: Alvord Unified School District

Neighborhood · ZIP 92505These 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.68
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.296

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.97%
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.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.53,012
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,326 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,440
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,650
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

4280 Mercury Ct 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 more than 76% of homes in Riverside 92505
  • Costs less per square foot than 68% of homes in Riverside 92505
  • Bigger than 76% of homes in La Sierra
  • Has a bigger lot than 78% of homes in La Sierra
  • Older than 73% of homes in Riverside County

What homes are worth in Riverside 92505

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

This home
$334K$986K

This home is worth more than 76% of homes in Riverside 92505.

How it measures up in Riverside 92505

The dot is this home. The mark in the middle is the typical home in Riverside 92505.

Estimated value$672,912
CheaperTypical $598,655Pricier

Pricier than 76% of homes nearby

Price per ft²$350
CheaperTypical $389Pricier

Pricier than 32% of homes nearby

Living area1,925 ft²
SmallerTypical 1,524 ft²Bigger

Bigger than 76% of homes nearby

Lot size0.26 ac
SmallerTypical 0.19 acBigger

Bigger than 69% of homes nearby

Year built1979
OlderTypical 1977Newer

Newer than 60% of homes nearby

How 4280 Mercury Ct ranks against every home in each area.
MeasureThis homeLa SierraRiverside 92505Riverside County
Estimated valuepricier than$672,91275% of homes76% of homes65% of homes
Price per ft²pricier than$35034% of homes32% of homes64% of homes
Living areabigger than1,925 ft²76% of homes76% of homes56% of homes
Lot sizebigger than0.26 ac78% of homes69% of homes64% of homes
Year builtnewer than197959% of homes60% of homes27% of homes

About 4280 Mercury Ct

How much is 4280 Mercury Ct, Riverside, CA worth?

The TopHap Estimate for 4280 Mercury Ct, Riverside, CA is $672,912 as of Sep 24, 2026. The likely range is $633,862 to $711,962. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4280 Mercury Ct, Riverside, CA last sell?

4280 Mercury Ct, Riverside, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 4280 Mercury Ct, Riverside, CA?

4280 Mercury Ct, Riverside, CA has 4 bedrooms, 2 bathrooms, 1,925 square feet of living space and a 0.26-acre lot.

When was 4280 Mercury Ct, Riverside, CA built?

4280 Mercury Ct, Riverside, CA was built in 1979, making it 47 years old. It is a contemporary home. The building has 1 story.

What schools serve 4280 Mercury Ct, Riverside, CA?

4280 Mercury Ct, 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 4280 Mercury Ct, Riverside, CA compare to other homes in Riverside 92505?

Among the 10,243 homes in Riverside 92505, it is worth more than 76% of them ($672,912 against a typical $598,655), its price per square foot is higher than 32% of them ($350 against a typical $389), it is bigger than 76% of them (1,925 ft² against a typical 1,524 ft²), its lot is bigger than 69% of them (0.26 ac against a typical 0.19 ac) and it is newer than 60% of them (1979 against a typical 1977). Measured against all of Riverside County, it is worth more than 65% 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 4280 Mercury Ct, Riverside, CA?

The 2025 property tax bill for 4280 Mercury Ct, Riverside, CA was $255. The county assessed it at $195,275.

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