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Single Family ResidenceResidential
$316,088$222 / 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 93How 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 $301,500 on May 2, 2025

1235 KOSTER CT

GENEVA, IL 60134
2
Beds
1.5
Baths
1,421 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.
683 ft²
Lot SizeThe size of the land the home sits on, from county records.
1991
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
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

$316K
$295K low$337K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$301,500 · May 2, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,080 (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.$86,328 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$10,083
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$76,245
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$79,565
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$259,088

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKANE
Lot (acres)The size of the land the home sits on, from county records.0.16
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(7)

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(2)

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

E
Harrison Street Elementary SchoolB
Elementary · Grades KG–5 · 0.7 mi
H
Geneva High SchoolB+
High · Grades 9–12 · 1.8 mi
M
Geneva Middle School NorthA
Middle · Grades 6–8 · 3.9 mi

District: Geneva Community Unit School District 304

Neighborhood · ZIP 60134These 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.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.53

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.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.30,629
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,793 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$144,772
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$172,749
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

1235 Koster Ct 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 less than 94% of homes in Geneva 60134
  • Costs less per square foot than 86% of homes in Geneva 60134
  • Smaller than 81% of homes in Geneva 60134
  • Among the smallest lots in Geneva 60134

What homes are worth in Geneva 60134

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

This home
$289K$1.1M

This home is worth more than 6% of homes in Geneva 60134.

How it measures up in Geneva 60134

The dot is this home. The mark in the middle is the typical home in Geneva 60134.

Estimated value$316,088
CheaperTypical $569,213Pricier

Pricier than 6% of homes nearby

Price per ft²$222
CheaperTypical $254Pricier

Pricier than 14% of homes nearby

Living area1,421 ft²
SmallerTypical 2,178 ft²Bigger

Bigger than 19% of homes nearby

Lot size683 ft²
SmallerTypical 0.25 acBigger

Smaller than almost all homes nearby

Year built1991
OlderTypical 1990Newer

Newer than 55% of homes nearby

How 1235 Koster Ct ranks against every home in each area.
MeasureThis homeGeneva 60134Kane County
Estimated valuepricier than$316,0886% of homes34% of homes
Price per ft²pricier than$22214% of homes56% of homes
Living areabigger than1,421 ft²19% of homes32% of homes
Lot sizebigger than683 ft²almost no homesalmost no homes
Year builtnewer than199155% of homes59% of homes

About 1235 Koster Ct

How much is 1235 Koster Ct, Geneva, IL worth?

The TopHap Estimate for 1235 Koster Ct, Geneva, IL is $316,088 as of Sep 24, 2026. The likely range is $295,413 to $336,763. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1235 Koster Ct, Geneva, IL last sell?

1235 Koster Ct, Geneva, IL last sold on May 2, 2025 for $301,500, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 1235 Koster Ct, Geneva, IL?

1235 Koster Ct, Geneva, IL has 2 bedrooms, 1.5 bathrooms, 1,421 square feet of living space and a 0.16-acre lot.

When was 1235 Koster Ct, Geneva, IL built?

1235 Koster Ct, Geneva, IL was built in 1991, making it 35 years old. The building has 2 stories.

What schools serve 1235 Koster Ct, Geneva, IL?

1235 Koster Ct, Geneva, IL is assigned to Harrison Street Elementary School (elementary), rated B; Geneva High School (high), rated B+; Geneva Middle School North (middle), rated A. All sit in Geneva Community Unit School District 304. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1235 Koster Ct, Geneva, IL compare to other homes in Geneva 60134?

Among the 10,358 homes in Geneva 60134, it is worth more than 6% of them ($316,088 against a typical $569,213), its price per square foot is higher than 14% of them ($222 against a typical $254), it is bigger than 19% of them (1,421 ft² against a typical 2,178 ft²), its lot is bigger than almost none of them (683 ft² against a typical 0.25 ac) and it is newer than 55% of them (1991 against a typical 1990). Measured against all of Kane County, it is worth more than 34% 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 1235 Koster Ct, Geneva, IL?

The 2025 property tax bill for 1235 Koster Ct, Geneva, IL was $5,080. The county assessed it at $86,328.

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