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Single Family ResidenceResidential
$810,047$271 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $310,000 on Oct 9, 1996

636 ROCK SPRING RD

NAPERVILLE, IL 60565
2.5
Baths
2,994 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.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1993
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$810K
$783K low$837K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$310,000 · Oct 9, 1996
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$387,047
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$309,638
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.53%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$348,000
KEY MORTGAGE SERVICES INC · 4.25% 2 · recorded Mar 1, 2017
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$75,000
FIRST MIDWEST BANK

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,950 (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.$225,366 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$57,627
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$167,739
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$199,086
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$676,098

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
5
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
71
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
74
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
45
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Single Family Residence
CountyWILL
Lot (acres)The size of the land the home sits on, from county records.0.25
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Spring Brook Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
M
Gregory Middle SchoolA
Middle · Grades 6–8 · 1.1 mi
H
Neuqua Valley High SchoolA+
High · Grades 9–12 · 2.0 mi

District: Indian Prairie Community Unit School District 204

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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

636 Rock Spring Rd 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 95% of homes in Will County
  • Costs more per square foot than 88% of homes in Will County
  • Bigger than 87% of homes in Will County
  • Newer than 85% 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
$226K$1.3M

This home is worth more than 81% of 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$810,047
CheaperTypical $637,909Pricier

Pricier than 81% of homes nearby

Price per ft²$271
CheaperTypical $256Pricier

Pricier than 68% of homes nearby

Living area2,994 ft²
SmallerTypical 2,436 ft²Bigger

Bigger than 72% of homes nearby

Lot size0.25 ac
SmallerTypical 0.25 acBigger

Bigger than 56% of homes nearby

Year built1993
OlderTypical 1986Newer

Newer than 85% of homes nearby

How 636 Rock Spring Rd ranks against every home in each area.
MeasureThis homeNaperville 60565Will County
Estimated valuepricier than$810,04781% of homes95% of homes
Price per ft²pricier than$27168% of homes88% of homes
Living areabigger than2,994 ft²72% of homes87% of homes
Lot sizebigger than0.25 ac56% of homes58% of homes
Year builtnewer than199385% of homes48% of homes

About 636 Rock Spring Rd

How much is 636 Rock Spring Rd, Naperville, IL worth?

The TopHap Estimate for 636 Rock Spring Rd, Naperville, IL is $810,047 as of Jul 14, 2026. The likely range is $782,983 to $837,111. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 636 Rock Spring Rd, Naperville, IL last sell?

636 Rock Spring Rd, Naperville, IL last sold on Oct 9, 1996 for $310,000, according to the county's recorded deed.

How big is 636 Rock Spring Rd, Naperville, IL?

636 Rock Spring Rd, Naperville, IL has 2.5 bathrooms, 2,994 square feet of living space and a 0.25-acre lot.

When was 636 Rock Spring Rd, Naperville, IL built?

636 Rock Spring Rd, Naperville, IL was built in 1993, making it 33 years old. The building has 2 stories.

What schools serve 636 Rock Spring Rd, Naperville, IL?

636 Rock Spring Rd, Naperville, IL is assigned to Spring Brook Elementary School (elementary), rated A; Gregory Middle School (middle), rated A; Neuqua Valley High School (high), rated A+. All sit in Indian Prairie Community Unit School District 204. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 636 Rock Spring Rd, Naperville, IL compare to other homes in Naperville 60565?

Among the 13,201 homes in Naperville 60565, it is worth more than 81% of them ($810,047 against a typical $637,909), its price per square foot is higher than 68% of them ($271 against a typical $256), it is bigger than 72% of them (2,994 ft² against a typical 2,436 ft²), its lot is bigger than 56% of them (0.25 ac against a typical 0.25 ac) and it is newer than 85% of them (1993 against a typical 1986). Measured against all of Will County, it is worth more than 95% 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 636 Rock Spring Rd, Naperville, IL?

The 2025 property tax bill for 636 Rock Spring Rd, Naperville, IL was $14,950. The county assessed it at $225,366.

Closest homes

More homes in Naperville 60565

Assigned schools

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