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Single Family ResidenceResidential
$520,296$394 / 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 83How 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

10999 MIDDLEBOROUGH RD

RIVERSIDE, CA 92503
3
Beds
1.8
Baths
1,320 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
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

$520K
$431K low$610K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,193 (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.$260,211 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$71,943
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$188,268
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$255,110
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$446,040

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.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.0.15
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(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
Arizona Middle SchoolB-
Middle · Grades 6–8 · 0.2 mi
E
Orrenmaa Elementary SchoolC
Elementary · Grades KG–5 · 0.8 mi
H
Hillcrest High SchoolB+
High · Grades 9–12 · 1.2 mi

District: Alvord 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%

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

10999 Middleborough 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 less than 83% of homes in La Sierra South
  • Costs more per square foot than 77% of homes in Riverside County
  • Smaller than 78% of homes in Riverside County
  • Has a smaller lot than 83% of homes in La Sierra South
  • Older than 75% 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
$384K$1.2M

This home is worth more than 19% 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$520,296
CheaperTypical $598,946Pricier

Pricier than 19% of homes nearby

Price per ft²$394
CheaperTypical $378Pricier

Pricier than 57% of homes nearby

Living area1,320 ft²
SmallerTypical 1,537 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.15 ac
SmallerTypical 0.19 acBigger

Bigger than 21% of homes nearby

Year built1978
OlderTypical 1978Newer

Newer than 51% of homes nearby

How 10999 Middleborough Rd ranks against every home in each area.
MeasureThis homeLa Sierra SouthRiverside 92503Riverside County
Estimated valuepricier than$520,29617% of homes19% of homes35% of homes
Price per ft²pricier than$39462% of homes57% of homes77% of homes
Living areabigger than1,320 ft²28% of homes34% of homes22% of homes
Lot sizebigger than0.15 ac17% of homes21% of homes25% of homes
Year builtnewer than197843% of homes51% of homes25% of homes

About 10999 Middleborough Rd

How much is 10999 Middleborough Rd, Riverside, CA worth?

The TopHap Estimate for 10999 Middleborough Rd, Riverside, CA is $520,296 as of Sep 24, 2026. The likely range is $430,716 to $609,876. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10999 Middleborough Rd, Riverside, CA last sell?

10999 Middleborough Rd, Riverside, CA last sold on Feb 2, 2015, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 10999 Middleborough Rd, Riverside, CA?

10999 Middleborough Rd, Riverside, CA has 3 bedrooms, 1.8 bathrooms, 1,320 square feet of living space and a 0.15-acre lot.

When was 10999 Middleborough Rd, Riverside, CA built?

10999 Middleborough Rd, Riverside, CA was built in 1978, making it 48 years old. The building has 1 story.

What schools serve 10999 Middleborough Rd, Riverside, CA?

10999 Middleborough Rd, Riverside, CA is assigned to Arizona Middle School (middle), rated B-; Orrenmaa Elementary School (elementary), rated C; Hillcrest High School (high), rated B+. All sit in Alvord Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10999 Middleborough Rd, Riverside, CA compare to other homes in Riverside 92503?

Among the 21,420 homes in Riverside 92503, it is worth more than 19% of them ($520,296 against a typical $598,946), its price per square foot is higher than 57% of them ($394 against a typical $378), it is bigger than 34% of them (1,320 ft² against a typical 1,537 ft²), its lot is bigger than 21% of them (0.15 ac against a typical 0.19 ac) and it is newer than 51% of them (1978 against a typical 1978). Measured against all of Riverside County, it is worth more than 35% 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 10999 Middleborough Rd, Riverside, CA?

The 2025 property tax bill for 10999 Middleborough Rd, Riverside, CA was $3,193. The county assessed it at $260,211.

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