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Duplex (2 Units, Any Combination)Residential
Last sold for $285,000 on Oct 1, 2008

321 S 1ST AVE

UPLAND, CA 91786
5
Beds
2
Baths
1,749 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1947
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
12
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$285,000 · Oct 1, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,239 (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.$374,354 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$105,082
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$269,272

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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 36 ft²Porch · 52 ft²

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
Edison Elementary SchoolA
Elementary · Grades KG–6 · 0.4 mi
H
Chaffey High SchoolC-
High · Grades 9–12 · 0.7 mi
M
Vina Danks Middle SchoolC-
Middle · Grades 7–8 · 1.0 mi

District: Ontario-Montclair Elementary School District

Neighborhood · ZIP 91786These 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.107
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 100.508

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.1.7%
PopulationHow many people live in this area.57,038
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,362 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,197
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,298
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.19 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

321 S 1st 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.

  • Older than 93% of homes in San Bernardino County

How it measures up in Upland 91786

The dot is this home. The mark in the middle is the typical home in Upland 91786.

Living area1,749 ft²
SmallerTypical 1,602 ft²Bigger

Bigger than 63% of homes nearby

Lot size0.17 ac
SmallerTypical 0.17 acBigger

Bigger than 41% of homes nearby

Year built1947
OlderTypical 1969Newer

Newer than 11% of homes nearby

How 321 S 1st Ave ranks against every home in each area.
MeasureThis homeUpland 91786San Bernardino County
Living areabigger than1,749 ft²63% of homes59% of homes
Lot sizebigger than0.17 ac41% of homes39% of homes
Year builtnewer than194711% of homes7% of homes

About 321 S 1st Ave

When did 321 S 1st Ave, Upland, CA last sell?

321 S 1st Ave, Upland, CA last sold on Oct 1, 2008 for $285,000, according to the county's recorded deed.

How big is 321 S 1st Ave, Upland, CA?

321 S 1st Ave, Upland, CA has 5 bedrooms, 2 bathrooms, 1,749 square feet of living space and a 0.17-acre lot.

When was 321 S 1st Ave, Upland, CA built?

321 S 1st Ave, Upland, CA was built in 1947, making it 79 years old. It is a conventional home. The building has 1 story.

What schools serve 321 S 1st Ave, Upland, CA?

321 S 1st Ave, Upland, CA is assigned to Edison Elementary School (elementary), rated A; Chaffey High School (high), rated C-; Vina Danks Middle School (middle), rated C-. All sit in Ontario-Montclair Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 S 1st Ave, Upland, CA compare to other homes in Upland 91786?

Among the 12,218 homes in Upland 91786, it is bigger than 63% of them (1,749 ft² against a typical 1,602 ft²), its lot is bigger than 41% of them (0.17 ac against a typical 0.17 ac) and it is newer than 11% of them (1947 against a typical 1969). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 321 S 1st Ave, Upland, CA?

The 2025 property tax bill for 321 S 1st Ave, Upland, CA was $4,239. The county assessed it at $374,354.

More homes on S 1st Ave

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