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Single Family ResidenceResidential
$516,423$203 / 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 95How 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 $273,000 on Dec 15, 2003

16423 S DOWNING ST

LOCKPORT, IL 60441
0
Baths
2,541 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.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$516K
$490K low$543K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$273,000 · Dec 15, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,862 (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.$145,899 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,024
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$122,875
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$135,594
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$437,697

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.41
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
21
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
72
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
75
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
40
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.0.20
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
William E. Young Elementary SchoolA-
Elementary · Grades PK–1 · 0.8 mi
M
Homer Junior High SchoolA+
Middle · Grades 7–8 · 2.2 mi
H
Lockport Township High SchoolB
High · Grades 9–12 · 3.3 mi

District: Lockport Township High School District 205

Neighborhood · ZIP 60441These 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.96
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
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.35,427
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,391 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,510
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$113,100
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.37 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

16423 S Downing 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.

  • Worth more than 83% of homes in Lockport 60441
  • Costs less per square foot than 65% of homes in Lockport 60441
  • Bigger than 78% of homes in Lockport 60441
  • Has a smaller lot than 66% of homes in Lockport 60441
  • Newer than 83% of homes in Lockport 60441

What homes are worth in Lockport 60441

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

This home
$130K$678K

This home is worth more than 83% of homes in Lockport 60441.

How it measures up in Lockport 60441

The dot is this home. The mark in the middle is the typical home in Lockport 60441.

Estimated value$516,423
CheaperTypical $348,329Pricier

Pricier than 83% of homes nearby

Price per ft²$203
CheaperTypical $213Pricier

Pricier than 35% of homes nearby

Living area2,541 ft²
SmallerTypical 1,762 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.2 ac
SmallerTypical 0.22 acBigger

Bigger than 34% of homes nearby

Year built2003
OlderTypical 1996Newer

Newer than 83% of homes nearby

How 16423 S Downing St ranks against every home in each area.
MeasureThis homeLockport 60441Will County
Estimated valuepricier than$516,42383% of homes77% of homes
Price per ft²pricier than$20335% of homes47% of homes
Living areabigger than2,541 ft²78% of homes76% of homes
Lot sizebigger than0.2 ac34% of homes34% of homes
Year builtnewer than200383% of homes83% of homes

About 16423 S Downing St

How much is 16423 S Downing St, Lockport, IL worth?

The TopHap Estimate for 16423 S Downing St, Lockport, IL is $516,423 as of Sep 24, 2026. The likely range is $489,504 to $543,342. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 16423 S Downing St, Lockport, IL last sell?

16423 S Downing St, Lockport, IL last sold on Dec 15, 2003 for $273,000, according to the county's recorded deed.

How big is 16423 S Downing St, Lockport, IL?

16423 S Downing St, Lockport, IL has 2,541 square feet of living space and a 0.20-acre lot.

When was 16423 S Downing St, Lockport, IL built?

16423 S Downing St, Lockport, IL was built in 2003, making it 23 years old. The building has 2 stories.

What schools serve 16423 S Downing St, Lockport, IL?

16423 S Downing St, Lockport, IL is assigned to William E. Young Elementary School (elementary), rated A-; Homer Junior High School (middle), rated A+; Lockport Township High School (high), rated B. All sit in Lockport Township High School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 16423 S Downing St, Lockport, IL compare to other homes in Lockport 60441?

Among the 12,514 homes in Lockport 60441, it is worth more than 83% of them ($516,423 against a typical $348,329), its price per square foot is higher than 35% of them ($203 against a typical $213), it is bigger than 78% of them (2,541 ft² against a typical 1,762 ft²), its lot is bigger than 34% of them (0.2 ac against a typical 0.22 ac) and it is newer than 83% of them (2003 against a typical 1996). Measured against all of Will County, it is worth more than 77% 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 16423 S Downing St, Lockport, IL?

The 2025 property tax bill for 16423 S Downing St, Lockport, IL was $10,862. The county assessed it at $145,899.

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