Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$339,111
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 $201,000 on May 1, 2023

420 GRAF ST

SOMONAUK, IL 60552
3
Beds
3.5
Baths
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
2
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

$339K
$319K low$359K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$201,000 · May 1, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,413 (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.$105,994 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$17,296
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$88,698
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$95,957
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$317,982

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.0.24
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, Detached
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(5)

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

H
Somonauk High SchoolB
High · Grades 9–12 · 0.4 mi
M
Somonauk Middle SchoolA
Middle · Grades 5–8 · 0.4 mi
E
James R Wood Elementary SchoolB-
Elementary · Grades PK–4 · 0.4 mi

District: Somonauk Community Unit School District 432

Neighborhood · ZIP 60552These 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.122
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.47

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
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.1.8%
PopulationHow many people live in this area.4,028
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.151 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$103,197
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,412
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.53%

Owner Tools

Do you own this home?
Claim this home

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

420 Graf 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 68% of homes in DeKalb County
  • Has a smaller lot than 83% of homes in Somonauk 60552

What homes are worth in Somonauk 60552

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

This home
$181K$929K

This home is worth more than 61% of homes in Somonauk 60552.

How it measures up in Somonauk 60552

The dot is this home. The mark in the middle is the typical home in Somonauk 60552.

Estimated value$339,111
CheaperTypical $310,962Pricier

Pricier than 61% of homes nearby

Lot size0.24 ac
SmallerTypical 0.36 acBigger

Bigger than 17% of homes nearby

How 420 Graf St ranks against every home in each area.
MeasureThis homeSomonauk 60552DeKalb County
Estimated valuepricier than$339,11161% of homes68% of homes
Lot sizebigger than0.24 ac17% of homes47% of homes

About 420 Graf St

How much is 420 Graf St, Somonauk, IL worth?

The TopHap Estimate for 420 Graf St, Somonauk, IL is $339,111 as of Oct 21, 2026. The likely range is $319,162 to $359,060. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 420 Graf St, Somonauk, IL last sell?

420 Graf St, Somonauk, IL last sold on May 1, 2023 for $201,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 420 Graf St, Somonauk, IL?

420 Graf St, Somonauk, IL has 3 bedrooms, 3.5 bathrooms and a 0.24-acre lot.

What schools serve 420 Graf St, Somonauk, IL?

420 Graf St, Somonauk, IL is assigned to Somonauk High School (high), rated B; Somonauk Middle School (middle), rated A; James R Wood Elementary School (elementary), rated B-. All sit in Somonauk Community Unit School District 432. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 420 Graf St, Somonauk, IL compare to other homes in Somonauk 60552?

Among the 1,727 homes in Somonauk 60552, it is worth more than 61% of them ($339,111 against a typical $310,962) and its lot is bigger than 17% of them (0.24 ac against a typical 0.36 ac). Measured against all of DeKalb County, it is worth more than 68% 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 420 Graf St, Somonauk, IL?

The 2024 property tax bill for 420 Graf St, Somonauk, IL was $7,413. The county assessed it at $105,994.

More homes on Graf St

Closest homes

More homes in Somonauk 60552

Assigned schools

Explore the area

See this home in context

Open 420 Graf St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map