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Single Family ResidenceResidential
$949,203$289 / 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 91How 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

1239 DECLAN CT

NAPERVILLE, IL 60563
2.5
Baths
3,287 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
2017
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$949K
$861K low$1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,845 (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.$270,369 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$80,840
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$189,529
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$249,119
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$811,107

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.0.21
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.

M
Jefferson Junior High SchoolA-
Middle · Grades 6–8 · 1.1 mi
E
Beebe Elementary SchoolA
Elementary · Grades KG–5 · 1.2 mi
H
Naperville North High SchoolA
High · Grades 9–12 · 1.9 mi

District: Naperville Community Unit District 203

Neighborhood · ZIP 60563These 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.116
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.57

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.38%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
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.38,367
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,497 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,499
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$143,639
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

1239 Declan Ct 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 more than 91% of homes in Naperville 60563
  • Costs more per square foot than 76% of homes in Naperville 60563
  • Bigger than 88% of homes in Naperville 60563
  • Has a smaller lot than 72% of homes in Naperville 60563
  • Newer than 98% of homes in DuPage County

What homes are worth in Naperville 60563

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

This home
$186K$1.5M

This home is worth more than 91% of homes in Naperville 60563.

How it measures up in Naperville 60563

The dot is this home. The mark in the middle is the typical home in Naperville 60563.

Estimated value$949,203
CheaperTypical $495,492Pricier

Pricier than 91% of homes nearby

Price per ft²$289
CheaperTypical $251Pricier

Pricier than 76% of homes nearby

Living area3,287 ft²
SmallerTypical 1,937 ft²Bigger

Bigger than 88% of homes nearby

Lot size0.21 ac
SmallerTypical 0.27 acBigger

Bigger than 28% of homes nearby

Year built2017
OlderTypical 1984Newer

Newer than 95% of homes nearby

How 1239 Declan Ct ranks against every home in each area.
MeasureThis homeNaperville 60563DuPage County
Estimated valuepricier than$949,20391% of homes91% of homes
Price per ft²pricier than$28976% of homes73% of homes
Living areabigger than3,287 ft²88% of homes87% of homes
Lot sizebigger than0.21 ac28% of homes40% of homes
Year builtnewer than201795% of homes98% of homes

About 1239 Declan Ct

How much is 1239 Declan Ct, Naperville, IL worth?

The TopHap Estimate for 1239 Declan Ct, Naperville, IL is $949,203 as of Sep 24, 2026. The likely range is $860,736 to $1,037,670. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1239 Declan Ct, Naperville, IL last sell?

1239 Declan Ct, Naperville, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1239 Declan Ct, Naperville, IL?

1239 Declan Ct, Naperville, IL has 2.5 bathrooms, 3,287 square feet of living space and a 0.21-acre lot.

When was 1239 Declan Ct, Naperville, IL built?

1239 Declan Ct, Naperville, IL was built in 2017, making it 9 years old. The building has 2 stories.

What schools serve 1239 Declan Ct, Naperville, IL?

1239 Declan Ct, Naperville, IL is assigned to Jefferson Junior High School (middle), rated A-; Beebe Elementary School (elementary), rated A; Naperville North 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 1239 Declan Ct, Naperville, IL compare to other homes in Naperville 60563?

Among the 10,625 homes in Naperville 60563, it is worth more than 91% of them ($949,203 against a typical $495,492), its price per square foot is higher than 76% of them ($289 against a typical $251), it is bigger than 88% of them (3,287 ft² against a typical 1,937 ft²), its lot is bigger than 28% of them (0.21 ac against a typical 0.27 ac) and it is newer than 95% of them (2017 against a typical 1984). Measured against all of DuPage County, it is worth more than 91% 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 1239 Declan Ct, Naperville, IL?

The 2025 property tax bill for 1239 Declan Ct, Naperville, IL was $14,845. The county assessed it at $270,369.

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