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Single Family ResidenceResidential
$632,961$320 / 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 Sep 24, 2026

18350 MARKHAM ST

RIVERSIDE, CA 92508
4
Beds
2.5
Baths
1,976 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.
5 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$633K
$587K low$679K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,483 (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.$230,630 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$54,749
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$175,881
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$226,109
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$497,340

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.14 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
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.1987
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.Rock / Gravel
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(7)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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 · 1.4 mi
H
Martin Luther King High SchoolA
High · Grades 9–12 · 1.8 mi
E
Mark Twain Elementary SchoolB
Elementary · Grades KG–6 · 1.8 mi

District: Riverside Unified School District

Neighborhood · ZIP 92508These 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.26
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.315

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.37,730
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,323 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,856
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$155,505
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.13 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

18350 Markham 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.

  • Worth less than 90% of homes in Woodcrest
  • Smaller than 70% of homes in Woodcrest
  • Among the largest lots in Riverside 92508
  • Older than 89% of homes in Riverside 92508

What homes are worth in Riverside 92508

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

This home
$493K$1.2M

This home is worth more than 11% of homes in Riverside 92508.

How it measures up in Riverside 92508

The dot is this home. The mark in the middle is the typical home in Riverside 92508.

Estimated value$632,961
CheaperTypical $761,535Pricier

Pricier than 11% of homes nearby

Price per ft²$320
CheaperTypical $320Pricier

Pricier than 50% of homes nearby

Living area1,976 ft²
SmallerTypical 2,423 ft²Bigger

Bigger than 32% of homes nearby

Lot size5 ac
SmallerTypical 0.2 acBigger

Bigger than almost all homes nearby

Year built1986
OlderTypical 1999Newer

Newer than 11% of homes nearby

How 18350 Markham St ranks against every home in each area.
MeasureThis homeWoodcrestRiverside 92508Riverside County
Estimated valuepricier than$632,96110% of homes11% of homes58% of homes
Price per ft²pricier than$32036% of homes50% of homes52% of homes
Living areabigger than1,976 ft²30% of homes32% of homes58% of homes
Lot sizebigger than5 ac95% of homesalmost all homes96% of homes
Year builtnewer than198641% of homes11% of homes38% of homes

About 18350 Markham St

How much is 18350 Markham St, Riverside, CA worth?

The TopHap Estimate for 18350 Markham St, Riverside, CA is $632,961 as of Sep 24, 2026. The likely range is $586,639 to $679,283. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18350 Markham St, Riverside, CA last sell?

18350 Markham St, Riverside, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18350 Markham St, Riverside, CA?

18350 Markham St, Riverside, CA has 4 bedrooms, 2.5 bathrooms and 1,976 square feet of living space.

When was 18350 Markham St, Riverside, CA built?

18350 Markham St, Riverside, CA was built in 1986, making it 40 years old. The building has 2 stories.

What schools serve 18350 Markham St, Riverside, CA?

18350 Markham St, Riverside, CA is assigned to Frank Augustus Miller Middle School (middle), rated A-; Martin Luther King High School (high), rated A; Mark Twain Elementary School (elementary), rated B. All sit in Riverside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18350 Markham St, Riverside, CA compare to other homes in Riverside 92508?

Among the 10,164 homes in Riverside 92508, it is worth more than 11% of them ($632,961 against a typical $761,535), its price per square foot is higher than 50% of them ($320 against a typical $320), it is bigger than 32% of them (1,976 ft² against a typical 2,423 ft²), its lot is bigger than almost all of them (5 ac against a typical 0.2 ac) and it is newer than 11% of them (1986 against a typical 1999). Measured against all of Riverside County, it is worth more than 58% 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 18350 Markham St, Riverside, CA?

The 2025 property tax bill for 18350 Markham St, Riverside, CA was $2,483. The county assessed it at $230,630.

More homes on Markham St

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