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CondominiumResidential
$658,923$366 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $439,000 on Dec 14, 2018

4859 S MONARCH PL

ONTARIO, CA 91762
3
Beds
2.5
Baths
1,800 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 ft²
Lot SizeThe size of the land the home sits on, from county records.
2018
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
7
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

$659K
$635K low$683K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$439,000 · Dec 14, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,778 (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.$499,508 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$176,364
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$323,144

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Modern
CountySAN BERNARDINO
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.Tile
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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

Transaction History(1)

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
Park View Elementary SchoolA
Elementary · Grades KG–6 · 0.3 mi
H
Colony High SchoolB-
High · Grades 9–12 · 2.3 mi
M
Grace Yokley Middle SchoolB
Middle · Grades 7–8 · 2.5 mi

District: Mountain View Elementary School District

Neighborhood · ZIP 91762These 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.81
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 100.404

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.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.55,546
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,695 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,909
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$90,307
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

4859 S Monarch Pl 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 94% of homes in Park Place
  • Costs more per square foot than 82% of homes in Park Place
  • Smaller than 93% of homes in Park Place
  • Has a smaller lot than 98% of homes in San Bernardino County
  • Newer than 94% of homes in San Bernardino County

What homes are worth in Ontario 91762

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

This home
$348K$1.1M

This home is worth more than 51% of homes in Ontario 91762.

How it measures up in Ontario 91762

The dot is this home. The mark in the middle is the typical home in Ontario 91762.

Estimated value$658,923
CheaperTypical $652,921Pricier

Pricier than 51% of homes nearby

Price per ft²$366
CheaperTypical $415Pricier

Pricier than 27% of homes nearby

Living area1,800 ft²
SmallerTypical 1,504 ft²Bigger

Bigger than 67% of homes nearby

Lot size1 ft²
SmallerTypical 0.16 acBigger

Bigger than 8% of homes nearby

Year built2018
OlderTypical 1976Newer

Newer than 86% of homes nearby

How 4859 S Monarch Pl ranks against every home in each area.
MeasureThis homePark PlaceOntario 91762San Bernardino County
Estimated valuepricier than$658,9236% of homes51% of homes71% of homes
Price per ft²pricier than$36682% of homes27% of homes59% of homes
Living areabigger than1,800 ft²7% of homes67% of homes62% of homes
Lot sizebigger than1 ft²14% of homes8% of homes2% of homes
Year builtnewer than201855% of homes86% of homes94% of homes

About 4859 S Monarch Pl

How much is 4859 S Monarch Pl, Ontario, CA worth?

The TopHap Estimate for 4859 S Monarch Pl, Ontario, CA is $658,923 as of Sep 24, 2026. The likely range is $635,286 to $682,560. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4859 S Monarch Pl, Ontario, CA last sell?

4859 S Monarch Pl, Ontario, CA last sold on Dec 14, 2018 for $439,000, according to the county's recorded deed.

How big is 4859 S Monarch Pl, Ontario, CA?

4859 S Monarch Pl, Ontario, CA has 3 bedrooms, 2.5 bathrooms and 1,800 square feet of living space.

When was 4859 S Monarch Pl, Ontario, CA built?

4859 S Monarch Pl, Ontario, CA was built in 2018, making it 8 years old. It is a modern home. The building has 2 stories.

What schools serve 4859 S Monarch Pl, Ontario, CA?

4859 S Monarch Pl, Ontario, CA is assigned to Park View Elementary School (elementary), rated A; Colony High School (high), rated B-; Grace Yokley Middle School (middle), rated B. All sit in Mountain View Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4859 S Monarch Pl, Ontario, CA compare to other homes in Ontario 91762?

Among the 14,891 homes in Ontario 91762, it is worth more than 51% of them ($658,923 against a typical $652,921), its price per square foot is higher than 27% of them ($366 against a typical $415), it is bigger than 67% of them (1,800 ft² against a typical 1,504 ft²), its lot is bigger than 8% of them (1 ft² against a typical 0.16 ac) and it is newer than 86% of them (2018 against a typical 1976). Measured against all of San Bernardino County, it is worth more than 71% 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 4859 S Monarch Pl, Ontario, CA?

The 2025 property tax bill for 4859 S Monarch Pl, Ontario, CA was $8,778. The county assessed it at $499,508.

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