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Single Family ResidenceResidential
$1,876,998$401 / 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 87How 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 $1,780,000 on Jun 27, 2025

657 S LOOMIS ST

NAPERVILLE, IL 60540
4.5
Baths
4,680 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
2016
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.9M
$1.6M low$2.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,780,000 · Jun 27, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$26,160 (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.$456,248 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$134,519
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$321,729
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$420,388
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,368,744

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.20
HeatingThe type of heating system in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Highlands Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
H
Naperville Central High SchoolA+
High · Grades 9–12 · 0.7 mi
M
Kennedy Junior High SchoolA-
Middle · Grades 6–8 · 1.8 mi

District: Naperville Community Unit District 203

Neighborhood · ZIP 60540These 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.74
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 100.51

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.45,217
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,223 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,923
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$182,929
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

657 S Loomis 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.

  • Among the most valuable homes in DuPage County
  • Costs more per square foot than 96% of homes in Naperville 60540
  • Bigger than 97% of homes in DuPage County
  • Has a smaller lot than 76% of homes in Naperville 60540
  • Newer than 98% of homes in DuPage County

What homes are worth in Naperville 60540

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

This home
$244K$2.1M

This home is worth more than 97% of homes in Naperville 60540.

How it measures up in Naperville 60540

The dot is this home. The mark in the middle is the typical home in Naperville 60540.

Estimated value$1,876,998
CheaperTypical $647,930Pricier

Pricier than 97% of homes nearby

Price per ft²$401
CheaperTypical $259Pricier

Pricier than 96% of homes nearby

Living area4,680 ft²
SmallerTypical 2,464 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.2 ac
SmallerTypical 0.25 acBigger

Bigger than 24% of homes nearby

Year built2016
OlderTypical 1984Newer

Newer than 97% of homes nearby

How 657 S Loomis St ranks against every home in each area.
MeasureThis homeNaperville 60540DuPage County
Estimated valuepricier than$1,876,99897% of homesalmost all homes
Price per ft²pricier than$40196% of homes95% of homes
Living areabigger than4,680 ft²91% of homes97% of homes
Lot sizebigger than0.2 ac24% of homes36% of homes
Year builtnewer than201697% of homes98% of homes

About 657 S Loomis St

How much is 657 S Loomis St, Naperville, IL worth?

The TopHap Estimate for 657 S Loomis St, Naperville, IL is $1,876,998 as of Aug 30, 2026. The likely range is $1,623,721 to $2,130,275. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 657 S Loomis St, Naperville, IL last sell?

657 S Loomis St, Naperville, IL last sold on Jun 27, 2025 for $1,780,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 657 S Loomis St, Naperville, IL?

657 S Loomis St, Naperville, IL has 4.5 bathrooms, 4,680 square feet of living space and a 0.20-acre lot.

When was 657 S Loomis St, Naperville, IL built?

657 S Loomis St, Naperville, IL was built in 2016, making it 10 years old. The building has 2 stories.

What schools serve 657 S Loomis St, Naperville, IL?

657 S Loomis St, Naperville, IL is assigned to Highlands Elementary School (elementary), rated A; Naperville Central High School (high), rated A+; Kennedy Junior High School (middle), rated A-. All sit in Naperville Community Unit District 203. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 657 S Loomis St, Naperville, IL compare to other homes in Naperville 60540?

Among the 14,044 homes in Naperville 60540, it is worth more than 97% of them ($1,876,998 against a typical $647,930), its price per square foot is higher than 96% of them ($401 against a typical $259), it is bigger than 91% of them (4,680 ft² against a typical 2,464 ft²), its lot is bigger than 24% of them (0.2 ac against a typical 0.25 ac) and it is newer than 97% of them (2016 against a typical 1984). Measured against all of DuPage County, it is worth more than almost all 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 657 S Loomis St, Naperville, IL?

The 2025 property tax bill for 657 S Loomis St, Naperville, IL was $26,160. The county assessed it at $456,248.

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