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Single Family ResidenceResidential
$383,028$187 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $178,500 on Dec 1, 2011

421 ASSEMBLY DR

BOLINGBROOK, IL 60440
4
Beds
3
Baths
2,050 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.
1972
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$383K
$358K low$408K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$178,500 · Dec 1, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,184 (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.$110,477 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$20,805
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$89,672
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$102,104
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$331,431

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.47
40
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
StyleThe architectural style of the home, such as ranch or colonial.Bi-Level
CountyWILL
Lot (acres)The size of the land the home sits on, from county records.0.21
ConstructionThe main material the home's frame and walls are built from.Brick
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.

Foreclosure Filings(2)

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

E
Wood View Elementary SchoolC+
Elementary · Grades KG–5 · 0.5 mi
M
Brooks Middle SchoolB-
Middle · Grades 6–8 · 1.9 mi
H
Bolingbrook High SchoolC
High · Grades 9–12 · 2.8 mi

District: Valley View Community Unit School District 365u

Neighborhood · ZIP 60440These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.52

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.55,981
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,322 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,505
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,853
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

421 Assembly Dr 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 72% of homes in Bolingbrook 60440
  • Costs less per square foot than 75% of homes in Bolingbrook 60440
  • Bigger than 79% of homes in Bolingbrook 60440
  • Has a bigger lot than 69% of homes in Bolingbrook 60440
  • Older than 74% of homes in Will County

What homes are worth in Bolingbrook 60440

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

This home
$175K$593K

This home is worth more than 72% of homes in Bolingbrook 60440.

How it measures up in Bolingbrook 60440

The dot is this home. The mark in the middle is the typical home in Bolingbrook 60440.

Estimated value$383,028
CheaperTypical $332,544Pricier

Pricier than 72% of homes nearby

Price per ft²$187
CheaperTypical $207Pricier

Pricier than 25% of homes nearby

Living area2,050 ft²
SmallerTypical 1,587 ft²Bigger

Bigger than 79% of homes nearby

Lot size0.21 ac
SmallerTypical 0.19 acBigger

Bigger than 69% of homes nearby

Year built1972
OlderTypical 1975Newer

Newer than 37% of homes nearby

How 421 Assembly Dr ranks against every home in each area.
MeasureThis homeBolingbrook 60440Will County
Estimated valuepricier than$383,02872% of homes53% of homes
Price per ft²pricier than$18725% of homes30% of homes
Living areabigger than2,050 ft²79% of homes60% of homes
Lot sizebigger than0.21 ac69% of homes41% of homes
Year builtnewer than197237% of homes26% of homes

About 421 Assembly Dr

How much is 421 Assembly Dr, Bolingbrook, IL worth?

The TopHap Estimate for 421 Assembly Dr, Bolingbrook, IL is $383,028 as of Oct 21, 2026. The likely range is $358,184 to $407,872. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Assembly Dr, Bolingbrook, IL last sell?

421 Assembly Dr, Bolingbrook, IL last sold on Dec 1, 2011 for $178,500, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 421 Assembly Dr, Bolingbrook, IL?

421 Assembly Dr, Bolingbrook, IL has 4 bedrooms, 3 bathrooms, 2,050 square feet of living space and a 0.21-acre lot.

When was 421 Assembly Dr, Bolingbrook, IL built?

421 Assembly Dr, Bolingbrook, IL was built in 1972, making it 54 years old. It is a bi-level home.

What schools serve 421 Assembly Dr, Bolingbrook, IL?

421 Assembly Dr, Bolingbrook, IL is assigned to Wood View Elementary School (elementary), rated C+; Brooks Middle School (middle), rated B-; Bolingbrook High School (high), rated C. All sit in Valley View Community Unit School District 365u. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Assembly Dr, Bolingbrook, IL compare to other homes in Bolingbrook 60440?

Among the 15,144 homes in Bolingbrook 60440, it is worth more than 72% of them ($383,028 against a typical $332,544), its price per square foot is higher than 25% of them ($187 against a typical $207), it is bigger than 79% of them (2,050 ft² against a typical 1,587 ft²), its lot is bigger than 69% of them (0.21 ac against a typical 0.19 ac) and it is newer than 37% of them (1972 against a typical 1975). Measured against all of Will County, it is worth more than 53% 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 421 Assembly Dr, Bolingbrook, IL?

The 2025 property tax bill for 421 Assembly Dr, Bolingbrook, IL was $9,184. The county assessed it at $110,477.

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