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Single Family ResidenceResidential
$1,015,168$268 / 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 90How 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 $615,000 on Jul 26, 2021

16421 WHIPPLE RD

SYCAMORE, IL 60178
5
Beds
3.5
Baths
3,794 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.
5 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$1M
$916K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$615,000 · Jul 26, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$20,054 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$298,916 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$37,098
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$261,818
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$281,042
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$896,748

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDEKALB
Lot (acres)The size of the land the home sits on, from county records.5.00
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Raised (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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.

E
North Grove Elementary SchoolA-
Elementary · Grades KG–5 · 2.1 mi
M
Sycamore Middle SchoolB-
Middle · Grades 6–8 · 3.6 mi
H
Sycamore High SchoolB+
High · Grades 9–12 · 5.2 mi

District: Sycamore Community Unit School District 427

Neighborhood · ZIP 60178These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.51

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
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.23,227
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.340 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,175
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$103,851
Average tempThe average temperature here across a full year.48°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.52%

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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

16421 Whipple 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.

  • Among the most valuable homes in Sycamore 60178
  • Costs more per square foot than 70% of homes in DeKalb County
  • Among the largest homes in Sycamore 60178
  • Has a bigger lot than 95% of homes in Sycamore 60178
  • Older than 69% of homes in DeKalb County

What homes are worth in Sycamore 60178

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

This home
$168K$651K

This home is worth more than almost all homes in Sycamore 60178.

How it measures up in Sycamore 60178

The dot is this home. The mark in the middle is the typical home in Sycamore 60178.

Estimated value$1,015,168
CheaperTypical $316,047Pricier

Pricier than almost all homes nearby

Price per ft²$268
CheaperTypical $232Pricier

Pricier than 69% of homes nearby

Living area3,794 ft²
SmallerTypical 1,342 ft²Bigger

Bigger than almost all homes nearby

Lot size5 ac
SmallerTypical 0.25 acBigger

Bigger than 95% of homes nearby

Year built1971
OlderTypical 1990Newer

Newer than 35% of homes nearby

How 16421 Whipple Rd ranks against every home in each area.
MeasureThis homeSycamore 60178DeKalb County
Estimated valuepricier than$1,015,168almost all homesalmost all homes
Price per ft²pricier than$26869% of homes70% of homes
Living areabigger than3,794 ft²almost all homesalmost all homes
Lot sizebigger than5 ac95% of homes94% of homes
Year builtnewer than197135% of homes31% of homes

About 16421 Whipple Rd

How much is 16421 Whipple Rd, Sycamore, IL worth?

The TopHap Estimate for 16421 Whipple Rd, Sycamore, IL is $1,015,168 as of Oct 21, 2026. The likely range is $915,534 to $1,114,802. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 16421 Whipple Rd, Sycamore, IL last sell?

16421 Whipple Rd, Sycamore, IL last sold on Jul 26, 2021 for $615,000, according to the county's recorded deed.

How big is 16421 Whipple Rd, Sycamore, IL?

16421 Whipple Rd, Sycamore, IL has 5 bedrooms, 3.5 bathrooms, 3,794 square feet of living space and a 5.00-acre lot.

When was 16421 Whipple Rd, Sycamore, IL built?

16421 Whipple Rd, Sycamore, IL was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 16421 Whipple Rd, Sycamore, IL?

16421 Whipple Rd, Sycamore, IL is assigned to North Grove Elementary School (elementary), rated A-; Sycamore Middle School (middle), rated B-; Sycamore High School (high), rated B+. All sit in Sycamore Community Unit School District 427. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 16421 Whipple Rd, Sycamore, IL compare to other homes in Sycamore 60178?

Among the 7,702 homes in Sycamore 60178, it is worth more than almost all of them ($1,015,168 against a typical $316,047), its price per square foot is higher than 69% of them ($268 against a typical $232), it is bigger than almost all of them (3,794 ft² against a typical 1,342 ft²), its lot is bigger than 95% of them (5 ac against a typical 0.25 ac) and it is newer than 35% of them (1971 against a typical 1990). Measured against all of DeKalb County, it is worth more than almost all 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 16421 Whipple Rd, Sycamore, IL?

The 2024 property tax bill for 16421 Whipple Rd, Sycamore, IL was $20,054. The county assessed it at $298,916.

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