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Single Family ResidenceResidential
$703,426$361 / 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 86How 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

18878 HARNESS RD

RIVERSIDE, CA 92504
4
Beds
2
Baths
1,950 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.
2.34 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

$703K
$603K low$804K 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.$503,426
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$402,741
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.26%
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.$200,000
PROVIDENT SAVINGS BANK · R · recorded Apr 17, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,437 (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.$228,715 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$79,248
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$149,467
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$224,232
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,290

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
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.No

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 · 2.5 mi
H
Martin Luther King High SchoolA
High · Grades 9–12 · 3.3 mi
E
Lake Mathews Elementary SchoolA-
Elementary · Grades KG–6 · 4.8 mi

District: Riverside Unified School District

Neighborhood · ZIP 92504These 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.90
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 100.307

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.9.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.56,759
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,438 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$79,931
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,916
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.11 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

18878 Harness Rd 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 79% of homes in Riverside 92504
  • Costs more per square foot than 71% of homes in Riverside County
  • Bigger than 75% of homes in Riverside 92504
  • Has a bigger lot than 95% of homes in Riverside 92504
  • Newer than 75% of homes in Riverside 92504

What homes are worth in Riverside 92504

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

This home
$389K$1.3M

This home is worth more than 79% of homes in Riverside 92504.

How it measures up in Riverside 92504

The dot is this home. The mark in the middle is the typical home in Riverside 92504.

Estimated value$703,426
CheaperTypical $598,791Pricier

Pricier than 79% of homes nearby

Price per ft²$361
CheaperTypical $416Pricier

Pricier than 30% of homes nearby

Living area1,950 ft²
SmallerTypical 1,416 ft²Bigger

Bigger than 75% of homes nearby

Lot size2.34 ac
SmallerTypical 0.19 acBigger

Bigger than 95% of homes nearby

Year built1979
OlderTypical 1960Newer

Newer than 75% of homes nearby

How 18878 Harness Rd ranks against every home in each area.
MeasureThis homeLake MathewsRiverside 92504Riverside County
Estimated valuepricier than$703,42629% of homes79% of homes73% of homes
Price per ft²pricier than$36160% of homes30% of homes71% of homes
Living areabigger than1,950 ft²43% of homes75% of homes57% of homes
Lot sizebigger than2.34 ac64% of homes95% of homes93% of homes
Year builtnewer than197940% of homes75% of homes27% of homes

About 18878 Harness Rd

How much is 18878 Harness Rd, Riverside, CA worth?

The TopHap Estimate for 18878 Harness Rd, Riverside, CA is $703,426 as of Jul 14, 2026. The likely range is $603,290 to $803,562. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18878 Harness Rd, Riverside, CA last sell?

18878 Harness Rd, Riverside, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18878 Harness Rd, Riverside, CA?

18878 Harness Rd, Riverside, CA has 4 bedrooms, 2 bathrooms and 1,950 square feet of living space.

When was 18878 Harness Rd, Riverside, CA built?

18878 Harness Rd, Riverside, CA was built in 1979, making it 47 years old. It is a contemporary home. The building has 1 story.

What schools serve 18878 Harness Rd, Riverside, CA?

18878 Harness Rd, Riverside, CA is assigned to Frank Augustus Miller Middle School (middle), rated A-; Martin Luther King High School (high), rated A; Lake Mathews Elementary School (elementary), rated A-. All sit in Riverside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18878 Harness Rd, Riverside, CA compare to other homes in Riverside 92504?

Among the 13,368 homes in Riverside 92504, it is worth more than 79% of them ($703,426 against a typical $598,791), its price per square foot is higher than 30% of them ($361 against a typical $416), it is bigger than 75% of them (1,950 ft² against a typical 1,416 ft²), its lot is bigger than 95% of them (2.34 ac against a typical 0.19 ac) and it is newer than 75% of them (1979 against a typical 1960). Measured against all of Riverside County, it is worth more than 73% 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 18878 Harness Rd, Riverside, CA?

The 2025 property tax bill for 18878 Harness Rd, Riverside, CA was $2,437. The county assessed it at $228,715.

Closest homes

More homes in Riverside 92504

Assigned schools

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