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Planned Unit Development (Pud)Residential
$692,809$484 / 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 Aug 30, 2026
Last sold for $441,000 on Jul 29, 2005

518 DIAMOND ST

MONROVIA, CA 91016
Building report
3
Beds
3
Baths
1,432 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.
1,962 ft²
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.

Valuation

$693K
$641K low$744K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$441,000 · Jul 29, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,258 (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.$614,699 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$387,917
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$226,782
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$602,647

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.15 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.Planned Unit Development (Pud)
CountyLOS ANGELES
Lot (acres)The size of the land the home sits on, from county records.0.04
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Santa Fe Computer Science Magnet SchoolB-
Middle · Grades 6–8 · 0.5 mi
H
Monrovia High SchoolB+
High · Grades 9–12 · 0.8 mi
E
Plymouth Elementary SchoolA-
Elementary · Grades KG–5 · 1.3 mi

District: Monrovia Unified School District

Neighborhood · ZIP 91016These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.694

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.41,126
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,298 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,319
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$114,406
Average tempThe average temperature here across a full year.61°F
Annual precipHow much rain and melted snow falls here in a typical year.32 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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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

518 Diamond 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 77% of homes in Monrovia 91016
  • Costs less per square foot than 82% of homes in Monrovia 91016
  • Among the smallest lots in Los Angeles County
  • Newer than 92% of homes in Monrovia 91016

What homes are worth in Monrovia 91016

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

This home
$496K$1.9M

This home is worth more than 23% of homes in Monrovia 91016.

How it measures up in Monrovia 91016

The dot is this home. The mark in the middle is the typical home in Monrovia 91016.

Estimated value$692,809
CheaperTypical $874,364Pricier

Pricier than 23% of homes nearby

Price per ft²$484
CheaperTypical $608Pricier

Pricier than 18% of homes nearby

Living area1,432 ft²
SmallerTypical 1,552 ft²Bigger

Bigger than 41% of homes nearby

Lot size1,962 ft²
SmallerTypical 0.18 acBigger

Bigger than 3% of homes nearby

Year built1998
OlderTypical 1951Newer

Newer than 92% of homes nearby

How 518 Diamond St ranks against every home in each area.
MeasureThis homeMonrovia 91016Los Angeles County
Estimated valuepricier than$692,80923% of homes33% of homes
Price per ft²pricier than$48418% of homes31% of homes
Living areabigger than1,432 ft²41% of homes40% of homes
Lot sizebigger than1,962 ft²3% of homesalmost no homes
Year builtnewer than199892% of homes90% of homes

About 518 Diamond St

How much is 518 Diamond St, Monrovia, CA worth?

The TopHap Estimate for 518 Diamond St, Monrovia, CA is $692,809 as of Aug 30, 2026. The likely range is $641,466 to $744,152. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 518 Diamond St, Monrovia, CA last sell?

518 Diamond St, Monrovia, CA last sold on Jul 29, 2005 for $441,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 518 Diamond St, Monrovia, CA?

518 Diamond St, Monrovia, CA has 3 bedrooms, 3 bathrooms, 1,432 square feet of living space and a 0.04-acre lot.

When was 518 Diamond St, Monrovia, CA built?

518 Diamond St, Monrovia, CA was built in 1998, making it 28 years old.

What schools serve 518 Diamond St, Monrovia, CA?

518 Diamond St, Monrovia, CA is assigned to Santa Fe Computer Science Magnet School (middle), rated B-; Monrovia High School (high), rated B+; Plymouth Elementary School (elementary), rated A-. All sit in Monrovia Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 518 Diamond St, Monrovia, CA compare to other homes in Monrovia 91016?

Among the 10,399 homes in Monrovia 91016, it is worth more than 23% of them ($692,809 against a typical $874,364), its price per square foot is higher than 18% of them ($484 against a typical $608), it is bigger than 41% of them (1,432 ft² against a typical 1,552 ft²), its lot is bigger than 3% of them (1,962 ft² against a typical 0.18 ac) and it is newer than 92% of them (1998 against a typical 1951). Measured against all of Los Angeles County, it is worth more than 33% 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 518 Diamond St, Monrovia, CA?

The 2025 property tax bill for 518 Diamond St, Monrovia, CA was $8,258. The county assessed it at $614,699.

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