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Single Family ResidenceResidential
$868,617$578 / 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 Jul 14, 2026
Last sold for $877,500 on May 19, 2026

9255 RIO DELL ST

ROSEMEAD, CA 91770
3
Beds
1
Baths
1,504 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.
1938
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$869K
$719K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$877,500 · May 19, 2026
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.$868,617
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$694,894

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,049 (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.$204,003 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$78,036
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$125,967
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$200,004

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.Conventional
CountyLOS ANGELES
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.1943
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
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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.

E
Encinita Elementary SchoolB
Elementary · Grades KG–6 · 0.2 mi
H
Rosemead High SchoolA-
High · Grades 9–12 · 0.4 mi
M
Muscatel Middle SchoolA
Middle · Grades 7–8 · 0.6 mi

District: Rosemead Elementary School District

Neighborhood · ZIP 91770These 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.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.386

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.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.57,788
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,576 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,486
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$83,265
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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

9255 Rio Dell 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.

  • Older than 83% of homes in Rosemead 91770

What homes are worth in Rosemead 91770

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

This home
$510K$1.5M

This home is worth more than 55% of homes in Rosemead 91770.

How it measures up in Rosemead 91770

The dot is this home. The mark in the middle is the typical home in Rosemead 91770.

Estimated value$868,617
CheaperTypical $842,750Pricier

Pricier than 55% of homes nearby

Price per ft²$578
CheaperTypical $589Pricier

Pricier than 47% of homes nearby

Living area1,504 ft²
SmallerTypical 1,510 ft²Bigger

Bigger than 50% of homes nearby

Lot size0.15 ac
SmallerTypical 0.16 acBigger

Bigger than 38% of homes nearby

Year built1938
OlderTypical 1953Newer

Newer than 17% of homes nearby

How 9255 Rio Dell St ranks against every home in each area.
MeasureThis homeRosemead 91770Los Angeles County
Estimated valuepricier than$868,61755% of homes54% of homes
Price per ft²pricier than$57847% of homes52% of homes
Living areabigger than1,504 ft²50% of homes44% of homes
Lot sizebigger than0.15 ac38% of homes37% of homes
Year builtnewer than193817% of homes17% of homes

About 9255 Rio Dell St

How much is 9255 Rio Dell St, Rosemead, CA worth?

The TopHap Estimate for 9255 Rio Dell St, Rosemead, CA is $868,617 as of Jul 14, 2026. The likely range is $719,160 to $1,018,074. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9255 Rio Dell St, Rosemead, CA last sell?

9255 Rio Dell St, Rosemead, CA last sold on May 19, 2026 for $877,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 9255 Rio Dell St, Rosemead, CA?

9255 Rio Dell St, Rosemead, CA has 3 bedrooms, 1 bathrooms, 1,504 square feet of living space and a 0.15-acre lot.

When was 9255 Rio Dell St, Rosemead, CA built?

9255 Rio Dell St, Rosemead, CA was built in 1938, making it 88 years old. It is a conventional home. The building has 1 story.

What schools serve 9255 Rio Dell St, Rosemead, CA?

9255 Rio Dell St, Rosemead, CA is assigned to Encinita Elementary School (elementary), rated B; Rosemead High School (high), rated A-; Muscatel Middle School (middle), rated A. All sit in Rosemead Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 9255 Rio Dell St, Rosemead, CA compare to other homes in Rosemead 91770?

Among the 11,989 homes in Rosemead 91770, it is worth more than 55% of them ($868,617 against a typical $842,750), its price per square foot is higher than 47% of them ($578 against a typical $589), it is bigger than 50% of them (1,504 ft² against a typical 1,510 ft²), its lot is bigger than 38% of them (0.15 ac against a typical 0.16 ac) and it is newer than 17% of them (1938 against a typical 1953). Measured against all of Los Angeles County, it is worth more than 54% 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 9255 Rio Dell St, Rosemead, CA?

The 2025 property tax bill for 9255 Rio Dell St, Rosemead, CA was $3,049. The county assessed it at $204,003.

Closest homes

More homes in Rosemead 91770

Assigned schools

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