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Single Family ResidenceResidential
$698,022$319 / 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 87How 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

18903 HARNESS RD

RIVERSIDE, CA 92504
4
Beds
2.8
Baths
2,191 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.
2.48 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.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$698K
$607K low$789K 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.$392,022
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$313,618
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.36%
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.$285,000
WASHINGTON MUTUAL FSB · recorded Mar 19, 2004
2nd 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.$21,000
BLUME TRUST

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,531 (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.$597,810 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$177,566
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$420,244
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$586,089
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$673,650

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
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.Tile
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

Transaction History(4)

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.

M
Frank Augustus Miller Middle SchoolA-
Middle · Grades 7–8 · 2.6 mi
H
Martin Luther King High SchoolA
High · Grades 9–12 · 3.4 mi
E
Lake Mathews Elementary SchoolA-
Elementary · Grades KG–6 · 4.7 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.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

18903 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 77% of homes in Riverside 92504
  • Costs less per square foot than 83% of homes in Riverside 92504
  • Bigger than 81% of homes in Riverside 92504
  • Has a bigger lot than 96% 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 77% 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$698,022
CheaperTypical $598,791Pricier

Pricier than 77% of homes nearby

Price per ft²$319
CheaperTypical $416Pricier

Pricier than 17% of homes nearby

Living area2,191 ft²
SmallerTypical 1,416 ft²Bigger

Bigger than 81% of homes nearby

Lot size2.48 ac
SmallerTypical 0.19 acBigger

Bigger than 96% of homes nearby

Year built1979
OlderTypical 1960Newer

Newer than 75% of homes nearby

How 18903 Harness Rd ranks against every home in each area.
MeasureThis homeLake MathewsRiverside 92504Riverside County
Estimated valuepricier than$698,02228% of homes77% of homes71% of homes
Price per ft²pricier than$31933% of homes17% of homes55% of homes
Living areabigger than2,191 ft²52% of homes81% of homes67% of homes
Lot sizebigger than2.48 ac71% of homes96% of homes93% of homes
Year builtnewer than197940% of homes75% of homes27% of homes

About 18903 Harness Rd

How much is 18903 Harness Rd, Riverside, CA worth?

The TopHap Estimate for 18903 Harness Rd, Riverside, CA is $698,022 as of Jul 14, 2026. The likely range is $607,488 to $788,556. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18903 Harness Rd, Riverside, CA last sell?

18903 Harness Rd, Riverside, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18903 Harness Rd, Riverside, CA?

18903 Harness Rd, Riverside, CA has 4 bedrooms, 2.8 bathrooms and 2,191 square feet of living space.

When was 18903 Harness Rd, Riverside, CA built?

18903 Harness Rd, Riverside, CA was built in 1979, making it 47 years old. The building has 1 story.

What schools serve 18903 Harness Rd, Riverside, CA?

18903 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 18903 Harness Rd, Riverside, CA compare to other homes in Riverside 92504?

Among the 13,368 homes in Riverside 92504, it is worth more than 77% of them ($698,022 against a typical $598,791), its price per square foot is higher than 17% of them ($319 against a typical $416), it is bigger than 81% of them (2,191 ft² against a typical 1,416 ft²), its lot is bigger than 96% of them (2.48 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 71% 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 18903 Harness Rd, Riverside, CA?

The 2025 property tax bill for 18903 Harness Rd, Riverside, CA was $6,531. The county assessed it at $597,810.

Closest homes

More homes in Riverside 92504

Assigned schools

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