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Single Family ResidenceResidential
$1,414,225$256 / 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 $755,000 on Aug 26, 2013

455 FLOCK AVE

NAPERVILLE, IL 60565
3.5
Baths
5,526 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.
0.41 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
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

$1.4M
$1.4M low$1.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$755,000 · Aug 26, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$23,577 (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.$411,986 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$85,287
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$326,699
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$379,606
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,235,958

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.0.41
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
Lincoln Junior High SchoolA
Middle · Grades 6–8 · 0.6 mi
E
Maplebrook Elementary SchoolA
Elementary · Grades KG–5 · 0.8 mi
H
Naperville Central High SchoolA+
High · Grades 9–12 · 1.8 mi

District: Naperville Community Unit District 203

Neighborhood · ZIP 60565These 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.25
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 100.56

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.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.0%
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.38,555
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,445 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$151,582
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$178,271
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

455 Flock 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.

  • Among the most valuable homes in Naperville 60565
  • Among the largest homes in Naperville 60565
  • Has a bigger lot than 88% of homes in Naperville 60565
  • Newer than 93% of homes in Naperville 60565

What homes are worth in Naperville 60565

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

This home
$230K$1.3M

This home is worth more than almost all homes in Naperville 60565.

How it measures up in Naperville 60565

The dot is this home. The mark in the middle is the typical home in Naperville 60565.

Estimated value$1,414,225
CheaperTypical $640,921Pricier

Pricier than almost all homes nearby

Price per ft²$256
CheaperTypical $261Pricier

Pricier than 44% of homes nearby

Living area5,526 ft²
SmallerTypical 2,434 ft²Bigger

Bigger than almost all homes nearby

Lot size0.41 ac
SmallerTypical 0.25 acBigger

Bigger than 88% of homes nearby

Year built1999
OlderTypical 1986Newer

Newer than 93% of homes nearby

How 455 Flock Ave ranks against every home in each area.
MeasureThis homeNaperville 60565DuPage County
Estimated valuepricier than$1,414,225almost all homes97% of homes
Price per ft²pricier than$25644% of homes56% of homes
Living areabigger than5,526 ft²almost all homes98% of homes
Lot sizebigger than0.41 ac88% of homes75% of homes
Year builtnewer than199993% of homes88% of homes

About 455 Flock Ave

How much is 455 Flock Ave, Naperville, IL worth?

The TopHap Estimate for 455 Flock Ave, Naperville, IL is $1,414,225 as of Sep 24, 2026. The likely range is $1,352,471 to $1,475,979. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 455 Flock Ave, Naperville, IL last sell?

455 Flock Ave, Naperville, IL last sold on Aug 26, 2013 for $755,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 455 Flock Ave, Naperville, IL?

455 Flock Ave, Naperville, IL has 3.5 bathrooms, 5,526 square feet of living space and a 0.41-acre lot.

When was 455 Flock Ave, Naperville, IL built?

455 Flock Ave, Naperville, IL was built in 1999, making it 27 years old. The building has 2 stories.

What schools serve 455 Flock Ave, Naperville, IL?

455 Flock Ave, Naperville, IL is assigned to Lincoln Junior High School (middle), rated A; Maplebrook Elementary School (elementary), rated A; Naperville Central High School (high), rated A+. All sit in Naperville Community Unit District 203. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 455 Flock Ave, Naperville, IL compare to other homes in Naperville 60565?

Among the 13,214 homes in Naperville 60565, it is worth more than almost all of them ($1,414,225 against a typical $640,921), its price per square foot is higher than 44% of them ($256 against a typical $261), it is bigger than almost all of them (5,526 ft² against a typical 2,434 ft²), its lot is bigger than 88% of them (0.41 ac against a typical 0.25 ac) and it is newer than 93% of them (1999 against a typical 1986). Measured against all of DuPage County, it is worth more than 97% 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 455 Flock Ave, Naperville, IL?

The 2025 property tax bill for 455 Flock Ave, Naperville, IL was $23,577. The county assessed it at $411,986.

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