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Single Family ResidenceResidential
$254,533$131 / 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 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

3801 SEILER RD

DORSEY, IL 62021
3
Beds
2
Baths
1,950 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.
1.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1965
Year BuiltThe year the home was originally built, according to county records.
1
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.

Valuation

$255K
$208K low$301K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,424 (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.$77,380 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,930
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$65,450
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$69,480
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$232,140

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.49
56
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
30
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
84
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
71
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
4
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.19 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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 Residence
CountyMADISON
Lot (acres)The size of the land the home sits on, from county records.1.20
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
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(2)

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.

H
Alton High SchoolD+
High · Grades 9–12 · 6.8 mi
E
Lewis & Clark Elementary School
Elementary · Grades KG–1 · 7.7 mi
M
Alton Middle SchoolC-
Middle · Grades 6–8 · 7.8 mi

District: Alton Community Unit School District 11

Neighborhood · ZIP 62021These 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.137
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.114
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.125

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
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.1,477
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.74 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,510
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,783
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.59%

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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

3801 Seiler 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.

  • Worth more than 67% of homes in Madison County
  • Costs less per square foot than 89% of homes in Dorsey 62021
  • Bigger than 92% of homes in Madison County
  • Has a bigger lot than 87% of homes in Madison County

What homes are worth in Dorsey 62021

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

This home
$70K$610K

This home is worth more than 52% of homes in Dorsey 62021.

How it measures up in Dorsey 62021

The dot is this home. The mark in the middle is the typical home in Dorsey 62021.

Estimated value$254,533
CheaperTypical $252,920Pricier

Pricier than 52% of homes nearby

Price per ft²$131
CheaperTypical $193Pricier

Pricier than 11% of homes nearby

Living area1,950 ft²
SmallerTypical 1,232 ft²Bigger

Bigger than 91% of homes nearby

Lot size1.2 ac
SmallerTypical 3.84 acBigger

Bigger than 30% of homes nearby

Year built1965
OlderTypical 1970Newer

Newer than 44% of homes nearby

How 3801 Seiler Rd ranks against every home in each area.
MeasureThis homeDorsey 62021Madison County
Estimated valuepricier than$254,53352% of homes67% of homes
Price per ft²pricier than$13111% of homes36% of homes
Living areabigger than1,950 ft²91% of homes92% of homes
Lot sizebigger than1.2 ac30% of homes87% of homes
Year builtnewer than196544% of homes52% of homes

About 3801 Seiler Rd

How much is 3801 Seiler Rd, Dorsey, IL worth?

The TopHap Estimate for 3801 Seiler Rd, Dorsey, IL is $254,533 as of Aug 30, 2026. The likely range is $207,731 to $301,335. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3801 Seiler Rd, Dorsey, IL last sell?

3801 Seiler Rd, Dorsey, IL last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3801 Seiler Rd, Dorsey, IL?

3801 Seiler Rd, Dorsey, IL has 3 bedrooms, 2 bathrooms, 1,950 square feet of living space and a 1.20-acre lot.

When was 3801 Seiler Rd, Dorsey, IL built?

3801 Seiler Rd, Dorsey, IL was built in 1965, making it 61 years old. The building has 1 story.

What schools serve 3801 Seiler Rd, Dorsey, IL?

3801 Seiler Rd, Dorsey, IL is assigned to Alton High School (high), rated D+; Lewis & Clark Elementary School (elementary); Alton Middle School (middle), rated C-. All sit in Alton Community Unit School District 11. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3801 Seiler Rd, Dorsey, IL compare to other homes in Dorsey 62021?

Among the 414 homes in Dorsey 62021, it is worth more than 52% of them ($254,533 against a typical $252,920), its price per square foot is higher than 11% of them ($131 against a typical $193), it is bigger than 91% of them (1,950 ft² against a typical 1,232 ft²), its lot is bigger than 30% of them (1.2 ac against a typical 3.84 ac) and it is newer than 44% of them (1965 against a typical 1970). Measured against all of Madison County, it is worth more than 67% 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 3801 Seiler Rd, Dorsey, IL?

The 2025 property tax bill for 3801 Seiler Rd, Dorsey, IL was $4,424. The county assessed it at $77,380.

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Assigned schools

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