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Single Family ResidenceResidential
$675,207$503 / 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 98How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

1731 S PROSPERO DR

GLENDORA, CA 91740
4
Beds
2
Baths
1,343 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1955
Year BuiltThe year the home was originally built, according to county records.
1
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.

Valuation

$675K
$659K low$692K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,400 (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.$69,195 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,466
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$53,729
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$67,839

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.Conventional
CountyLOS ANGELES
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1956
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Rock / Gravel
HeatingThe type of heating system in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

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
Ben Lomond Elementary SchoolB
Elementary · Grades KG–5 · 0.5 mi
H
Northview High SchoolC+
High · Grades 9–12 · 2.1 mi
M
Las Palmas Middle SchoolB-
Middle · Grades 6–8 · 2.5 mi

District: Covina-Valley Unified School District

Neighborhood · ZIP 91740These 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.55
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 100.513

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.98%
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.7.9%
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.26,149
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,260 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$96,592
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$117,896
Average tempThe average temperature here across a full year.64°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.73%

Owner Tools

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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

1731 S Prospero Dr 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 Glendora 91740
  • Costs less per square foot than 70% of homes in Glendora 91740
  • Smaller than 67% of homes in Los Angeles County
  • Has a smaller lot than 89% of homes in Glendora 91740
  • Older than 78% of homes in Glendora 91740

What homes are worth in Glendora 91740

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

This home
$559K$1.3M

This home is worth more than 13% of homes in Glendora 91740.

How it measures up in Glendora 91740

The dot is this home. The mark in the middle is the typical home in Glendora 91740.

Estimated value$675,207
CheaperTypical $791,911Pricier

Pricier than 13% of homes nearby

Price per ft²$503
CheaperTypical $554Pricier

Pricier than 30% of homes nearby

Living area1,343 ft²
SmallerTypical 1,400 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 11% of homes nearby

Year built1955
OlderTypical 1961Newer

Newer than 22% of homes nearby

How 1731 S Prospero Dr ranks against every home in each area.
MeasureThis homeGlendora 91740Los Angeles County
Estimated valuepricier than$675,20713% of homes27% of homes
Price per ft²pricier than$50330% of homes32% of homes
Living areabigger than1,343 ft²43% of homes33% of homes
Lot sizebigger than0.14 ac11% of homes29% of homes
Year builtnewer than195522% of homes47% of homes

About 1731 S Prospero Dr

How much is 1731 S Prospero Dr, Glendora, CA worth?

The TopHap Estimate for 1731 S Prospero Dr, Glendora, CA is $675,207 as of Oct 21, 2026. The likely range is $658,822 to $691,592. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1731 S Prospero Dr, Glendora, CA last sell?

1731 S Prospero Dr, Glendora, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1731 S Prospero Dr, Glendora, CA?

1731 S Prospero Dr, Glendora, CA has 4 bedrooms, 2 bathrooms, 1,343 square feet of living space and a 0.14-acre lot.

When was 1731 S Prospero Dr, Glendora, CA built?

1731 S Prospero Dr, Glendora, CA was built in 1955, making it 71 years old. It is a conventional home. The building has 1 story.

What schools serve 1731 S Prospero Dr, Glendora, CA?

1731 S Prospero Dr, Glendora, CA is assigned to Ben Lomond Elementary School (elementary), rated B; Northview High School (high), rated C+; Las Palmas Middle School (middle), rated B-. All sit in Covina-Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1731 S Prospero Dr, Glendora, CA compare to other homes in Glendora 91740?

Among the 6,896 homes in Glendora 91740, it is worth more than 13% of them ($675,207 against a typical $791,911), its price per square foot is higher than 30% of them ($503 against a typical $554), it is bigger than 43% of them (1,343 ft² against a typical 1,400 ft²), its lot is bigger than 11% of them (0.14 ac against a typical 0.18 ac) and it is newer than 22% of them (1955 against a typical 1961). Measured against all of Los Angeles County, it is worth more than 27% 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 1731 S Prospero Dr, Glendora, CA?

The 2025 property tax bill for 1731 S Prospero Dr, Glendora, CA was $1,400. The county assessed it at $69,195.

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