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Single Family ResidenceResidential
$1,388,471$544 / 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 95How 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

3870 DELTA AVE

ROSEMEAD, CA 91770
4
Beds
3
Baths
2,550 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1995
Year BuiltThe year the home was originally built, according to county records.

Valuation

$1.4M
$1.3M low$1.5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,780 (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.$524,233 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$154,176
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$370,057
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$513,954

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
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.1999
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Mildred B. Janson Elementary SchoolA+
Elementary · Grades KG–6 · 0.4 mi
M
Muscatel Middle SchoolA
Middle · Grades 7–8 · 0.7 mi
H
Rosemead High SchoolA-
High · Grades 9–12 · 0.9 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%

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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

3870 Delta 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 more than 98% of homes in Rosemead 91770
  • Bigger than 86% of homes in Rosemead 91770
  • Has a smaller lot than 73% of homes in Rosemead 91770
  • Newer than 92% 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
$473K$1.4M

This home is worth more than 98% 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$1,388,471
CheaperTypical $810,003Pricier

Pricier than 98% of homes nearby

Price per ft²$544
CheaperTypical $558Pricier

Pricier than 47% of homes nearby

Living area2,550 ft²
SmallerTypical 1,524 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.14 ac
SmallerTypical 0.16 acBigger

Bigger than 27% of homes nearby

Year built1995
OlderTypical 1953Newer

Newer than 92% of homes nearby

How 3870 Delta Ave ranks against every home in each area.
MeasureThis homeRosemead 91770Los Angeles County
Estimated valuepricier than$1,388,47198% of homes81% of homes
Price per ft²pricier than$54447% of homes47% of homes
Living areabigger than2,550 ft²86% of homes82% of homes
Lot sizebigger than0.14 ac27% of homes27% of homes
Year builtnewer than199592% of homes90% of homes

About 3870 Delta Ave

How much is 3870 Delta Ave, Rosemead, CA worth?

The TopHap Estimate for 3870 Delta Ave, Rosemead, CA is $1,388,471 as of Aug 30, 2026. The likely range is $1,322,496 to $1,454,446. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3870 Delta Ave, Rosemead, CA last sell?

3870 Delta Ave, Rosemead, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3870 Delta Ave, Rosemead, CA?

3870 Delta Ave, Rosemead, CA has 4 bedrooms, 3 bathrooms, 2,550 square feet of living space and a 0.14-acre lot.

When was 3870 Delta Ave, Rosemead, CA built?

3870 Delta Ave, Rosemead, CA was built in 1995, making it 31 years old.

What schools serve 3870 Delta Ave, Rosemead, CA?

3870 Delta Ave, Rosemead, CA is assigned to Mildred B. Janson Elementary School (elementary), rated A+; Muscatel Middle School (middle), rated A; Rosemead High School (high), rated A-. All sit in Rosemead Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3870 Delta Ave, Rosemead, CA compare to other homes in Rosemead 91770?

Among the 11,982 homes in Rosemead 91770, it is worth more than 98% of them ($1,388,471 against a typical $810,003), its price per square foot is higher than 47% of them ($544 against a typical $558), it is bigger than 86% of them (2,550 ft² against a typical 1,524 ft²), its lot is bigger than 27% of them (0.14 ac against a typical 0.16 ac) and it is newer than 92% of them (1995 against a typical 1953). Measured against all of Los Angeles County, it is worth more than 81% 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 3870 Delta Ave, Rosemead, CA?

The 2025 property tax bill for 3870 Delta Ave, Rosemead, CA was $6,780. The county assessed it at $524,233.

More homes on Delta Ave

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