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Single Family ResidenceResidential
$805,030
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

12399 SUGARGUM ST

RANCHO CUCAMONGA, CA 91739
0
Baths
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$805K
$739K low$871K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,086 (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.$139,957 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$33,147
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$106,810

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.39 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
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.12
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Windrows Elementary SchoolA-
Elementary · Grades KG–5 · 0.3 mi
M
Etiwanda Intermediate SchoolB-
Middle · Grades 6–8 · 0.6 mi
H
Rancho Cucamonga 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

12399 Sugargum 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 more than 86% of homes in San Bernardino County
  • Has a smaller lot than 80% of homes in Rancho Cucamonga 91739

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
$448K$1.8M

This home is worth more than 38% 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$805,030
CheaperTypical $908,721Pricier

Pricier than 38% of homes nearby

Lot size0.12 ac
SmallerTypical 0.18 acBigger

Bigger than 20% of homes nearby

How 12399 Sugargum St ranks against every home in each area.
MeasureThis homeVictoriaRancho Cucamonga 91739San Bernardino County
Estimated valuepricier than$805,03060% of homes38% of homes86% of homes
Lot sizebigger than0.12 ac45% of homes20% of homes20% of homes

About 12399 Sugargum St

How much is 12399 Sugargum St, Rancho Cucamonga, CA worth?

The TopHap Estimate for 12399 Sugargum St, Rancho Cucamonga, CA is $805,030 as of Aug 30, 2026. The likely range is $738,926 to $871,134. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12399 Sugargum St, Rancho Cucamonga, CA last sell?

12399 Sugargum St, Rancho Cucamonga, CA last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 12399 Sugargum St, Rancho Cucamonga, CA?

12399 Sugargum St, Rancho Cucamonga, CA is assigned to Windrows Elementary School (elementary), rated A-; Etiwanda Intermediate School (middle), rated B-; Rancho Cucamonga 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 12399 Sugargum 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 38% of them ($805,030 against a typical $908,721) and its lot is bigger than 20% of them (0.12 ac against a typical 0.18 ac). Measured against all of San Bernardino County, it is worth more than 86% 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 12399 Sugargum St, Rancho Cucamonga, CA?

The 2025 property tax bill for 12399 Sugargum St, Rancho Cucamonga, CA was $2,086. The county assessed it at $139,957.

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