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Single Family ResidenceResidential
$492,199$393 / 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 $285,000 on Jul 21, 2004

3900 FOREST AVE

DOWNERS GROVE, IL 60515
3
Beds
1
Baths
1,254 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$492K
$468K low$516K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$285,000 · Jul 21, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,080 (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.$150,638 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$89,521
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$61,117
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$139,609
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$451,914

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.Ranch
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.33
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
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.

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

E
Highland Elementary SchoolA+
Elementary · Grades KG–6 · 0.2 mi
M
Herrick Middle SchoolA
Middle · Grades 7–8 · 0.7 mi
H
Community High School District 99 - North High SchoolA+
High · Grades 9–12 · 0.7 mi

District: Community High School District 99

Neighborhood · ZIP 60515These 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.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.121
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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.30,825
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,919 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,934
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$153,944
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

3900 Forest 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.

  • Costs more per square foot than 94% of homes in DuPage County
  • Smaller than 78% of homes in DuPage County
  • Has a bigger lot than 69% of homes in DuPage County
  • Older than 88% of homes in DuPage County

What homes are worth in Downers Grove 60515

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

This home
$171K$1.6M

This home is worth more than 41% of homes in Downers Grove 60515.

How it measures up in Downers Grove 60515

The dot is this home. The mark in the middle is the typical home in Downers Grove 60515.

Estimated value$492,199
CheaperTypical $545,055Pricier

Pricier than 41% of homes nearby

Price per ft²$393
CheaperTypical $325Pricier

Pricier than 77% of homes nearby

Living area1,254 ft²
SmallerTypical 1,624 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.33 ac
SmallerTypical 0.27 acBigger

Bigger than 59% of homes nearby

Year built1953
OlderTypical 1968Newer

Newer than 28% of homes nearby

How 3900 Forest Ave ranks against every home in each area.
MeasureThis homeDowners Grove 60515DuPage County
Estimated valuepricier than$492,19941% of homes57% of homes
Price per ft²pricier than$39377% of homes94% of homes
Living areabigger than1,254 ft²34% of homes22% of homes
Lot sizebigger than0.33 ac59% of homes69% of homes
Year builtnewer than195328% of homes12% of homes

About 3900 Forest Ave

How much is 3900 Forest Ave, Downers Grove, IL worth?

The TopHap Estimate for 3900 Forest Ave, Downers Grove, IL is $492,199 as of Sep 24, 2026. The likely range is $468,080 to $516,318. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3900 Forest Ave, Downers Grove, IL last sell?

3900 Forest Ave, Downers Grove, IL last sold on Jul 21, 2004 for $285,000, according to the county's recorded deed.

How big is 3900 Forest Ave, Downers Grove, IL?

3900 Forest Ave, Downers Grove, IL has 3 bedrooms, 1 bathrooms, 1,254 square feet of living space and a 0.33-acre lot.

When was 3900 Forest Ave, Downers Grove, IL built?

3900 Forest Ave, Downers Grove, IL was built in 1953, making it 73 years old. It is a ranch home. The building has 1 story.

What schools serve 3900 Forest Ave, Downers Grove, IL?

3900 Forest Ave, Downers Grove, IL is assigned to Highland Elementary School (elementary), rated A+; Herrick Middle School (middle), rated A; Community High School District 99 - North High School (high), rated A+. All sit in Community High School District 99. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3900 Forest Ave, Downers Grove, IL compare to other homes in Downers Grove 60515?

Among the 11,004 homes in Downers Grove 60515, it is worth more than 41% of them ($492,199 against a typical $545,055), its price per square foot is higher than 77% of them ($393 against a typical $325), it is bigger than 34% of them (1,254 ft² against a typical 1,624 ft²), its lot is bigger than 59% of them (0.33 ac against a typical 0.27 ac) and it is newer than 28% of them (1953 against a typical 1968). Measured against all of DuPage County, it is worth more than 57% 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 3900 Forest Ave, Downers Grove, IL?

The 2025 property tax bill for 3900 Forest Ave, Downers Grove, IL was $8,080. The county assessed it at $150,638.

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