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Duplex (2 Units, Any Combination)Residential
Last sold for $750,000 on Oct 28, 2026

129 W 4TH ST

SAN DIMAS, CA 91773
3
Beds
2
Baths
1,612 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
Year BuiltThe year the home was originally built, according to county records.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$750,000 · Oct 28, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,666 (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.$54,939 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$12,215
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$42,724
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$53,863

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyLOS ANGELES
Lot (acres)The size of the land the home sits on, from county records.0.16
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Fred Ekstrand Elementary SchoolA-
Elementary · Grades KG–5 · 0.4 mi
H
San Dimas High SchoolA-
High · Grades 9–12 · 1.2 mi
M
Lone Hill Middle SchoolA-
Middle · Grades 6–8 · 1.4 mi

District: Bonita Unified School District

Neighborhood · ZIP 91773These 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.68
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.549

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
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.33,478
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,155 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,808
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$124,896
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.20 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

129 W 4th 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.

  • Has a smaller lot than 74% of homes in San Dimas 91773
  • Older than 94% of homes in San Dimas 91773

How it measures up in San Dimas 91773

The dot is this home. The mark in the middle is the typical home in San Dimas 91773.

Living area1,612 ft²
SmallerTypical 1,674 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.16 ac
SmallerTypical 0.19 acBigger

Bigger than 26% of homes nearby

Year built1952
OlderTypical 1977Newer

Newer than 6% of homes nearby

How 129 W 4th St ranks against every home in each area.
MeasureThis homeSan Dimas 91773Los Angeles County
Living areabigger than1,612 ft²45% of homes52% of homes
Lot sizebigger than0.16 ac26% of homes48% of homes
Year builtnewer than19526% of homes39% of homes

About 129 W 4th St

When did 129 W 4th St, San Dimas, CA last sell?

129 W 4th St, San Dimas, CA last sold on Oct 28, 2026 for $750,000, according to the county's recorded deed.

How big is 129 W 4th St, San Dimas, CA?

129 W 4th St, San Dimas, CA has 3 bedrooms, 2 bathrooms, 1,612 square feet of living space and a 0.16-acre lot.

When was 129 W 4th St, San Dimas, CA built?

129 W 4th St, San Dimas, CA was built in 1952, making it 74 years old. It is a duplex single home.

What schools serve 129 W 4th St, San Dimas, CA?

129 W 4th St, San Dimas, CA is assigned to Fred Ekstrand Elementary School (elementary), rated A-; San Dimas High School (high), rated A-; Lone Hill Middle School (middle), rated A-. All sit in Bonita Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 129 W 4th St, San Dimas, CA compare to other homes in San Dimas 91773?

Among the 10,111 homes in San Dimas 91773, it is bigger than 45% of them (1,612 ft² against a typical 1,674 ft²), its lot is bigger than 26% of them (0.16 ac against a typical 0.19 ac) and it is newer than 6% of them (1952 against a typical 1977). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 129 W 4th St, San Dimas, CA?

The 2025 property tax bill for 129 W 4th St, San Dimas, CA was $1,666. The county assessed it at $54,939.

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