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Single Family ResidenceResidential
$621,307$531 / 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 93How 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

12012 EFFEN ST

RANCHO CUCAMONGA, CA 91739
3
Beds
2
Baths
1,170 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.
1975
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$621K
$577K low$666K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,278 (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.$305,467 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$120,083
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$185,384

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.34
58
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
77
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.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.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.0.17
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.Composition Shingle
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.Evaporative
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.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 · 380 ft²Porch · 380 ft²

Transaction History(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Terra Vista Elementary SchoolB+
Elementary · Grades KG–5 · 0.7 mi
H
Rancho Cucamonga High SchoolA-
High · Grades 9–12 · 1.4 mi
M
Etiwanda Intermediate SchoolB-
Middle · Grades 6–8 · 1.6 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%

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

12012 Effen 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.

  • Worth less than 83% of homes in Rancho Cucamonga 91739
  • Costs more per square foot than 94% of homes in San Bernardino County
  • Smaller than 88% of homes in Rancho Cucamonga 91739
  • Has a bigger lot than 91% of homes in Terra Vista
  • Older than 96% of homes in Terra Vista

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
$469K$1.8M

This home is worth more than 17% 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$621,307
CheaperTypical $924,287Pricier

Pricier than 17% of homes nearby

Price per ft²$531
CheaperTypical $382Pricier

Pricier than 89% of homes nearby

Living area1,170 ft²
SmallerTypical 2,554 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.17 ac
SmallerTypical 0.18 acBigger

Bigger than 46% of homes nearby

Year built1975
OlderTypical 2002Newer

Newer than 5% of homes nearby

How 12012 Effen St ranks against every home in each area.
MeasureThis homeTerra VistaRancho Cucamonga 91739San Bernardino County
Estimated valuepricier than$621,30732% of homes17% of homes70% of homes
Price per ft²pricier than$53188% of homes89% of homes94% of homes
Living areabigger than1,170 ft²13% of homes12% of homes21% of homes
Lot sizebigger than0.17 ac91% of homes46% of homes43% of homes
Year builtnewer than19754% of homes5% of homes34% of homes

About 12012 Effen St

How much is 12012 Effen St, Rancho Cucamonga, CA worth?

The TopHap Estimate for 12012 Effen St, Rancho Cucamonga, CA is $621,307 as of Jul 14, 2026. The likely range is $576,566 to $666,048. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12012 Effen St, Rancho Cucamonga, CA last sell?

12012 Effen St, Rancho Cucamonga, CA last sold on Jan 30, 2013, according to the county's recorded deed. TopHap holds 7 recorded sales for this parcel.

How big is 12012 Effen St, Rancho Cucamonga, CA?

12012 Effen St, Rancho Cucamonga, CA has 3 bedrooms, 2 bathrooms, 1,170 square feet of living space and a 0.17-acre lot.

When was 12012 Effen St, Rancho Cucamonga, CA built?

12012 Effen St, Rancho Cucamonga, CA was built in 1975, making it 51 years old. It is a modern home. The building has 1 story.

What schools serve 12012 Effen St, Rancho Cucamonga, CA?

12012 Effen St, Rancho Cucamonga, CA is assigned to Terra Vista Elementary School (elementary), rated B+; Rancho Cucamonga High School (high), rated A-; Etiwanda Intermediate School (middle), rated B-. All sit in Chaffey Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12012 Effen St, 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 17% of them ($621,307 against a typical $924,287), its price per square foot is higher than 89% of them ($531 against a typical $382), it is bigger than 12% of them (1,170 ft² against a typical 2,554 ft²), its lot is bigger than 46% of them (0.17 ac against a typical 0.18 ac) and it is newer than 5% of them (1975 against a typical 2002). Measured against all of San Bernardino County, it is worth more than 70% 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 12012 Effen St, Rancho Cucamonga, CA?

The 2025 property tax bill for 12012 Effen St, Rancho Cucamonga, CA was $3,278. The county assessed it at $305,467.

More homes on Effen St

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Assigned schools

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