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Single Family ResidenceResidential
$1,345,999$564 / 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 92How 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
Last sold for $1,295,000 on Jun 9, 2025

12921 ARAPAHO RD

RANCHO CUCAMONGA, CA 91739
4
Beds
3
Baths
2,387 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.
0.55 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
2
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.3M
$1.2M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,295,000 · Jun 9, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,762 (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.$1,320,492 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$330,123
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$990,369

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.21 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.11%
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.0.2 percent flood zone

Scores 0–100; higher = greater projected risk.

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.Modern
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.55
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.Pool W/Hot Tub/Spa
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 182 ft²Porch · 182 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
Etiwanda Colony Elementary SchoolA-
Elementary · Grades KG–5 · 0.6 mi
M
Summit Intermediate SchoolA-
Middle · Grades 6–8 · 0.7 mi
H
Etiwanda High SchoolA
High · Grades 9–12 · 0.8 mi

District: Chaffey Joint Union High School District

Neighborhood · ZIP 91739These 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.47
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 100.537

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.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.41,489
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,320 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$136,481
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$176,085
Average tempThe average temperature here across a full year.56°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

12921 Arapaho Rd 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 San Bernardino County
  • Among the highest price per square foot in Etiwanda
  • Bigger than 84% of homes in San Bernardino County
  • Has a bigger lot than 94% of homes in Rancho Cucamonga 91739
  • Older than 85% of homes in Etiwanda

What homes are worth in Rancho Cucamonga 91739

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

This home
$451K$1.8M

This home is worth more than 88% of homes in Rancho Cucamonga 91739.

How it measures up in Rancho Cucamonga 91739

The dot is this home. The mark in the middle is the typical home in Rancho Cucamonga 91739.

Estimated value$1,345,999
CheaperTypical $910,000Pricier

Pricier than 88% of homes nearby

Price per ft²$564
CheaperTypical $370Pricier

Pricier than 92% of homes nearby

Living area2,387 ft²
SmallerTypical 2,566 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.55 ac
SmallerTypical 0.18 acBigger

Bigger than 94% of homes nearby

Year built1990
OlderTypical 2002Newer

Newer than 23% of homes nearby

How 12921 Arapaho Rd ranks against every home in each area.
MeasureThis homeEtiwandaRancho Cucamonga 91739San Bernardino County
Estimated valuepricier than$1,345,99981% of homes88% of homes98% of homes
Price per ft²pricier than$564almost all homes92% of homes97% of homes
Living areabigger than2,387 ft²33% of homes45% of homes84% of homes
Lot sizebigger than0.55 ac84% of homes94% of homes86% of homes
Year builtnewer than199015% of homes23% of homes67% of homes

About 12921 Arapaho Rd

How much is 12921 Arapaho Rd, Rancho Cucamonga, CA worth?

The TopHap Estimate for 12921 Arapaho Rd, Rancho Cucamonga, CA is $1,345,999 as of Aug 30, 2026. The likely range is $1,244,002 to $1,447,996. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12921 Arapaho Rd, Rancho Cucamonga, CA last sell?

12921 Arapaho Rd, Rancho Cucamonga, CA last sold on Jun 9, 2025 for $1,295,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 12921 Arapaho Rd, Rancho Cucamonga, CA?

12921 Arapaho Rd, Rancho Cucamonga, CA has 4 bedrooms, 3 bathrooms, 2,387 square feet of living space and a 0.55-acre lot.

When was 12921 Arapaho Rd, Rancho Cucamonga, CA built?

12921 Arapaho Rd, Rancho Cucamonga, CA was built in 1990, making it 36 years old. It is a modern home. The building has 2 stories.

What schools serve 12921 Arapaho Rd, Rancho Cucamonga, CA?

12921 Arapaho Rd, Rancho Cucamonga, CA is assigned to Etiwanda Colony Elementary School (elementary), rated A-; Summit Intermediate School (middle), rated A-; Etiwanda High School (high), rated A. All sit in Chaffey Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12921 Arapaho Rd, Rancho Cucamonga, CA compare to other homes in Rancho Cucamonga 91739?

Among the 10,775 homes in Rancho Cucamonga 91739, it is worth more than 88% of them ($1,345,999 against a typical $910,000), its price per square foot is higher than 92% of them ($564 against a typical $370), it is bigger than 45% of them (2,387 ft² against a typical 2,566 ft²), its lot is bigger than 94% of them (0.55 ac against a typical 0.18 ac) and it is newer than 23% of them (1990 against a typical 2002). Measured against all of San Bernardino County, it is worth more than 98% 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 12921 Arapaho Rd, Rancho Cucamonga, CA?

The 2025 property tax bill for 12921 Arapaho Rd, Rancho Cucamonga, CA was $10,762. The county assessed it at $1,320,492.

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