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Single Family ResidentialResidential
$355,731$152 / 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 Jul 14, 2026
Last sold for $115,500 on Sep 29, 2015

640 RUSTIC ROOK DR

SOMONAUK, IL 60552
1.5
Baths
2,338 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.
0.4 ac
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.

Valuation

$356K
$339K low$372K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$115,500 · Sep 29, 2015
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$224,779
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$179,823
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.41%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$130,952
PROSPECT MORTGAGE LLC · 4.5% 2 · recorded Sep 29, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,985 (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.$105,276 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$24,403
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$80,873
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$96,815
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$315,828

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
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.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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 Residential
StyleThe architectural style of the home, such as ranch or colonial.Split Level
CountyLASALLE
Lot (acres)The size of the land the home sits on, from county records.0.40
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(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
James R Wood Elementary SchoolA
Elementary · Grades PK–4 · 1.0 mi
H
Somonauk High SchoolB+
High · Grades 9–12 · 1.2 mi
M
Somonauk Middle SchoolA
Middle · Grades 5–8 · 1.2 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

640 Rustic Rook 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 89% of homes in LaSalle County
  • Costs less per square foot than 87% of homes in Somonauk 60552
  • Bigger than 91% of homes in LaSalle County
  • Has a bigger lot than 72% of homes in LaSalle County
  • Newer than 75% of homes in LaSalle County

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$759K

This home is worth more than 67% 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$355,731
CheaperTypical $307,221Pricier

Pricier than 67% of homes nearby

Price per ft²$152
CheaperTypical $207Pricier

Pricier than 13% of homes nearby

Living area2,338 ft²
SmallerTypical 1,600 ft²Bigger

Bigger than 84% of homes nearby

Lot size0.4 ac
SmallerTypical 0.36 acBigger

Bigger than 66% of homes nearby

Year built1980
OlderTypical 1988Newer

Newer than 41% of homes nearby

How 640 Rustic Rook Dr ranks against every home in each area.
MeasureThis homeSomonauk 60552LaSalle County
Estimated valuepricier than$355,73167% of homes89% of homes
Price per ft²pricier than$15213% of homes68% of homes
Living areabigger than2,338 ft²84% of homes91% of homes
Lot sizebigger than0.4 ac66% of homes72% of homes
Year builtnewer than198041% of homes75% of homes

About 640 Rustic Rook Dr

How much is 640 Rustic Rook Dr, Somonauk, IL worth?

The TopHap Estimate for 640 Rustic Rook Dr, Somonauk, IL is $355,731 as of Jul 14, 2026. The likely range is $339,462 to $372,000. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Rustic Rook Dr, Somonauk, IL last sell?

640 Rustic Rook Dr, Somonauk, IL last sold on Sep 29, 2015 for $115,500, according to the county's recorded deed.

How big is 640 Rustic Rook Dr, Somonauk, IL?

640 Rustic Rook Dr, Somonauk, IL has 1.5 bathrooms, 2,338 square feet of living space and a 0.40-acre lot.

When was 640 Rustic Rook Dr, Somonauk, IL built?

640 Rustic Rook Dr, Somonauk, IL was built in 1980, making it 46 years old. It is a split level home.

What schools serve 640 Rustic Rook Dr, Somonauk, IL?

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

How does 640 Rustic Rook Dr, Somonauk, IL compare to other homes in Somonauk 60552?

Among the 1,723 homes in Somonauk 60552, it is worth more than 67% of them ($355,731 against a typical $307,221), its price per square foot is higher than 13% of them ($152 against a typical $207), it is bigger than 84% of them (2,338 ft² against a typical 1,600 ft²), its lot is bigger than 66% of them (0.4 ac against a typical 0.36 ac) and it is newer than 41% of them (1980 against a typical 1988). Measured against all of LaSalle County, it is worth more than 89% 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 640 Rustic Rook Dr, Somonauk, IL?

The 2025 property tax bill for 640 Rustic Rook Dr, Somonauk, IL was $6,985. The county assessed it at $105,276.

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