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Single Family ResidenceResidential
$426,548$409 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

1821 MARLBOROUGH AVE

RIVERSIDE, CA 92507
2
Beds
1
Baths
1,044 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.
0.44 ac
Lot SizeThe size of the land the home sits on, from county records.
1908
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$427K
$412K low$441K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,452 (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.$403,114 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$163,975
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$239,139
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$395,210
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$292,500

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.0.44
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
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, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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(4)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
University Heights Middle SchoolC+
Middle · Grades 7–8 · 1.0 mi
H
John W. North High SchoolC+
High · Grades 9–12 · 1.1 mi
E
Highgrove Elementary SchoolC-
Elementary · Grades KG–6 · 1.8 mi

District: Riverside Unified School District

Neighborhood · ZIP 92507These 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.112
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 100.450

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.95%
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.15%
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.64,491
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,078 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$66,160
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,952
Average tempThe average temperature here across a full year.63°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

1821 Marlborough Ave 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 88% of homes in Hunter Industrial Park
  • Costs more per square foot than 82% of homes in Riverside County
  • Smaller than 92% of homes in Riverside County
  • Has a bigger lot than 94% of homes in Hunter Industrial Park
  • Among the oldest homes in Hunter Industrial Park

What homes are worth in Riverside 92507

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

This home
$294K$931K

This home is worth more than 16% of homes in Riverside 92507.

How it measures up in Riverside 92507

The dot is this home. The mark in the middle is the typical home in Riverside 92507.

Estimated value$426,548
CheaperTypical $577,599Pricier

Pricier than 16% of homes nearby

Price per ft²$409
CheaperTypical $360Pricier

Pricier than 75% of homes nearby

Living area1,044 ft²
SmallerTypical 1,572 ft²Bigger

Bigger than 16% of homes nearby

Lot size0.44 ac
SmallerTypical 0.19 acBigger

Bigger than 90% of homes nearby

Year built1908
OlderTypical 1977Newer

Newer than 3% of homes nearby

How 1821 Marlborough Ave ranks against every home in each area.
MeasureThis homeHunter Industrial ParkRiverside 92507Riverside County
Estimated valuepricier than$426,54812% of homes16% of homes20% of homes
Price per ft²pricier than$40972% of homes75% of homes82% of homes
Living areabigger than1,044 ft²18% of homes16% of homes8% of homes
Lot sizebigger than0.44 ac94% of homes90% of homes74% of homes
Year builtnewer than1908almost no homes3% of homesalmost no homes

About 1821 Marlborough Ave

How much is 1821 Marlborough Ave, Riverside, CA worth?

The TopHap Estimate for 1821 Marlborough Ave, Riverside, CA is $426,548 as of Aug 30, 2026. The likely range is $411,804 to $441,292. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1821 Marlborough Ave, Riverside, CA last sell?

1821 Marlborough Ave, Riverside, CA last sold on Nov 16, 2022, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 1821 Marlborough Ave, Riverside, CA?

1821 Marlborough Ave, Riverside, CA has 2 bedrooms, 1 bathrooms, 1,044 square feet of living space and a 0.44-acre lot.

When was 1821 Marlborough Ave, Riverside, CA built?

1821 Marlborough Ave, Riverside, CA was built in 1908, making it 118 years old. The building has 1 story.

What schools serve 1821 Marlborough Ave, Riverside, CA?

1821 Marlborough Ave, Riverside, CA is assigned to University Heights Middle School (middle), rated C+; John W. North High School (high), rated C+; Highgrove Elementary School (elementary), rated C-. All sit in Riverside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1821 Marlborough Ave, Riverside, CA compare to other homes in Riverside 92507?

Among the 12,285 homes in Riverside 92507, it is worth more than 16% of them ($426,548 against a typical $577,599), its price per square foot is higher than 75% of them ($409 against a typical $360), it is bigger than 16% of them (1,044 ft² against a typical 1,572 ft²), its lot is bigger than 90% of them (0.44 ac against a typical 0.19 ac) and it is newer than 3% of them (1908 against a typical 1977). Measured against all of Riverside County, it is worth more than 20% 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 1821 Marlborough Ave, Riverside, CA?

The 2025 property tax bill for 1821 Marlborough Ave, Riverside, CA was $4,452. The county assessed it at $403,114.

More homes on Marlborough Ave

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Assigned schools

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