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Duplex (2 Units, Any Combination)Residential
$464,027$563 / 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 Jul 14, 2026

10210 HUMBOLDT AVE

RANCHO CUCAMONGA, CA 91730
2
Beds
1
Baths
824 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1945
Year BuiltThe year the home was originally built, according to county records.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$464K
$429K low$499K high

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.44 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountySAN BERNARDINO
Lot (acres)The size of the land the home sits on, from county records.0.14
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.

M
Rancho Cucamonga Middle SchoolB-
Middle · Grades 6–8 · 0.3 mi
E
Cucamonga Elementary SchoolD-
Elementary · Grades KG–5 · 0.7 mi
H
Chaffey High SchoolC-
High · Grades 9–12 · 4.2 mi

District: Chaffey Joint Union High School District

Neighborhood · ZIP 91730These 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.95
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.446

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.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.70,900
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,102 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,634
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,551
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.18 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

10210 Humboldt 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.

  • Worth less than 87% of homes in Rancho Cucamonga 91730
  • Costs more per square foot than 97% of homes in San Bernardino County
  • Smaller than 98% of homes in Rancho Cucamonga 91730
  • Has a smaller lot than 72% of homes in San Bernardino County
  • Older than 98% of homes in Southwest Rancho Cucamonga

What homes are worth in Rancho Cucamonga 91730

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

This home
$346K$961K

This home is worth more than 13% of homes in Rancho Cucamonga 91730.

How it measures up in Rancho Cucamonga 91730

The dot is this home. The mark in the middle is the typical home in Rancho Cucamonga 91730.

Estimated value$464,027
CheaperTypical $625,934Pricier

Pricier than 13% of homes nearby

Price per ft²$563
CheaperTypical $409Pricier

Pricier than 95% of homes nearby

Living area824 ft²
SmallerTypical 1,448 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.15 ac
SmallerTypical 0.13 acBigger

Bigger than 54% of homes nearby

Year built1945
OlderTypical 1986Newer

Newer than 2% of homes nearby

How 10210 Humboldt Ave ranks against every home in each area.
MeasureThis homeSouthwest Rancho CucamongaRancho Cucamonga 91730San Bernardino County
Estimated valuepricier than$464,02725% of homes13% of homes40% of homes
Price per ft²pricier than$56396% of homes95% of homes97% of homes
Living areabigger than824 ft²6% of homes2% of homes6% of homes
Lot sizebigger than0.15 ac54% of homes54% of homes28% of homes
Year builtnewer than19452% of homes2% of homes5% of homes

About 10210 Humboldt Ave

How much is 10210 Humboldt Ave, Rancho Cucamonga, CA worth?

The TopHap Estimate for 10210 Humboldt Ave, Rancho Cucamonga, CA is $464,027 as of Jul 14, 2026. The likely range is $429,032 to $499,022. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10210 Humboldt Ave, Rancho Cucamonga, CA last sell?

10210 Humboldt Ave, Rancho Cucamonga, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 10210 Humboldt Ave, Rancho Cucamonga, CA?

10210 Humboldt Ave, Rancho Cucamonga, CA has 2 bedrooms, 1 bathrooms, 824 square feet of living space and a 0.14-acre lot.

When was 10210 Humboldt Ave, Rancho Cucamonga, CA built?

10210 Humboldt Ave, Rancho Cucamonga, CA was built in 1945, making it 81 years old. It is a duplex single home.

What schools serve 10210 Humboldt Ave, Rancho Cucamonga, CA?

10210 Humboldt Ave, Rancho Cucamonga, CA is assigned to Rancho Cucamonga Middle School (middle), rated B-; Cucamonga Elementary School (elementary), rated D-; Chaffey High School (high), rated C-. All sit in Chaffey Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10210 Humboldt Ave, Rancho Cucamonga, CA compare to other homes in Rancho Cucamonga 91730?

Among the 16,261 homes in Rancho Cucamonga 91730, it is worth more than 13% of them ($464,027 against a typical $625,934), its price per square foot is higher than 95% of them ($563 against a typical $409), it is bigger than 2% of them (824 ft² against a typical 1,448 ft²), its lot is bigger than 54% of them (0.15 ac against a typical 0.13 ac) and it is newer than 2% of them (1945 against a typical 1986). Measured against all of San Bernardino County, it is worth more than 40% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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