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Single Family ResidenceResidential
$123,110$113 / 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 Jul 14, 2026
Last sold for $71,500 on Jun 28, 2002

3437 18TH ST

ROCKFORD, IL 61109
3
Beds
1
Baths
1,092 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.
0.6 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$123K
$115K low$132K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$71,500 · Jun 28, 2002
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.$34,810
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$27,848
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.63%
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.$68,300
FIRST FSB LA CROSSE MADISON · P · recorded Jul 2, 2002
2nd 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.$10,000
FIRST FEDERAL CAPITAL BANK
3rd 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.$10,000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,988 (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.$40,570 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$5,626
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$34,944
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$36,409
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$121,710

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.34
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
10
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
68
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
60
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
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 Residence
StyleThe architectural style of the home, such as ranch or colonial.Cape Cod
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.60
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 100 ft²

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
Riverdahl Elementary SchoolD+
Elementary · Grades KG–5 · 1.3 mi
H
Jefferson High SchoolF
High · Grades 9–12 · 1.5 mi
M
RESA Middle SchoolD
Middle · Grades 6–8 · 3.7 mi

District: Rockford School District 205

Neighborhood · ZIP 61109These 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.100
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 100.42

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.15%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.26,851
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.669 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,982
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$73,739
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.52%

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

3437 18th 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 less than 80% of homes in Winnebago County
  • Costs more per square foot than 77% of homes in Rockford 61109
  • Smaller than 82% of homes in Winnebago County
  • Has a bigger lot than 80% of homes in Winnebago County
  • Older than 87% of homes in Rockford 61109

What homes are worth in Rockford 61109

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

This home
$47K$376K

This home is worth more than 29% of homes in Rockford 61109.

How it measures up in Rockford 61109

The dot is this home. The mark in the middle is the typical home in Rockford 61109.

Estimated value$123,110
CheaperTypical $197,052Pricier

Pricier than 29% of homes nearby

Price per ft²$113
CheaperTypical $87Pricier

Pricier than 77% of homes nearby

Living area1,092 ft²
SmallerTypical 1,873 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.6 ac
SmallerTypical 0.31 acBigger

Bigger than 79% of homes nearby

Year built1940
OlderTypical 1970Newer

Newer than 13% of homes nearby

How 3437 18th St ranks against every home in each area.
MeasureThis homeRockford 61109Winnebago County
Estimated valuepricier than$123,11029% of homes20% of homes
Price per ft²pricier than$11377% of homes44% of homes
Living areabigger than1,092 ft²20% of homes18% of homes
Lot sizebigger than0.6 ac79% of homes80% of homes
Year builtnewer than194013% of homes20% of homes

About 3437 18th St

How much is 3437 18th St, Rockford, IL worth?

The TopHap Estimate for 3437 18th St, Rockford, IL is $123,110 as of Jul 14, 2026. The likely range is $114,663 to $131,557. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3437 18th St, Rockford, IL last sell?

3437 18th St, Rockford, IL last sold on Jun 28, 2002 for $71,500, according to the county's recorded deed.

How big is 3437 18th St, Rockford, IL?

3437 18th St, Rockford, IL has 3 bedrooms, 1 bathrooms, 1,092 square feet of living space and a 0.60-acre lot.

When was 3437 18th St, Rockford, IL built?

3437 18th St, Rockford, IL was built in 1940, making it 86 years old. It is a cape cod home. The building has 1 story.

What schools serve 3437 18th St, Rockford, IL?

3437 18th St, Rockford, IL is assigned to Riverdahl Elementary School (elementary), rated D+; Jefferson High School (high), rated F; RESA Middle School (middle), rated D. All sit in Rockford School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3437 18th St, Rockford, IL compare to other homes in Rockford 61109?

Among the 8,747 homes in Rockford 61109, it is worth more than 29% of them ($123,110 against a typical $197,052), its price per square foot is higher than 77% of them ($113 against a typical $87), it is bigger than 20% of them (1,092 ft² against a typical 1,873 ft²), its lot is bigger than 79% of them (0.6 ac against a typical 0.31 ac) and it is newer than 13% of them (1940 against a typical 1970). Measured against all of Winnebago County, it is worth more than 20% 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 3437 18th St, Rockford, IL?

The 2025 property tax bill for 3437 18th St, Rockford, IL was $1,988. The county assessed it at $40,570.

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Assigned schools

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