Skip to content
Skip to content
TopHapOpen in map
Residential (General/Single)Residential
$56,854
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

4XX UNDERWOOD ST

ROCKFORD, IL 61101
0
Baths
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$57K
$54K low$60K high
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.$56,854
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$45,483

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$52 (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.$587 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$279
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$308
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$526
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,761

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.
9
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.
63
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.Residential (General/Single)
CountyWINNEBAGO
Lot (acres)The size of the land the home sits on, from county records.0.14
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
ViewThe type of view from the property, or another feature of the site that affects value.Alley

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.

E
Lewis Lemon Elementary SchoolD-
Elementary · Grades KG–5 · 0.7 mi
M
Kennedy Middle SchoolD-
Middle · Grades 6–8 · 1.7 mi
H
Auburn High SchoolD-
High · Grades 9–12 · 1.7 mi

District: Rockford School District 205

Neighborhood · ZIP 61101These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.39

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.88%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.9.7%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.30%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.19,188
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.457 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$50,496
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$62,438
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.35 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.Absentee owner
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

4xx Underwood 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 98% of homes in Winnebago County
  • Has a smaller lot than 96% of homes in Winnebago County

What homes are worth in Rockford 61101

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

This home
$49K$327K

This home is worth more than 5% of homes in Rockford 61101.

How it measures up in Rockford 61101

The dot is this home. The mark in the middle is the typical home in Rockford 61101.

Estimated value$56,854
CheaperTypical $99,921Pricier

Pricier than 5% of homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 7% of homes nearby

How 4xx Underwood St ranks against every home in each area.
MeasureThis homeWest Gateway CoalitionRockford 61101Winnebago County
Estimated valuepricier than$56,85410% of homes5% of homes2% of homes
Lot sizebigger than0.14 ac17% of homes7% of homes4% of homes

About 4xx Underwood St

How much is 4xx Underwood St, Rockford, IL worth?

The TopHap Estimate for 4xx Underwood St, Rockford, IL is $56,854 as of Jul 14, 2026. The likely range is $53,920 to $59,788. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4xx Underwood St, Rockford, IL last sell?

4xx Underwood St, Rockford, IL last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 4xx Underwood St, Rockford, IL?

4xx Underwood St, Rockford, IL is assigned to Lewis Lemon Elementary School (elementary), rated D-; Kennedy Middle School (middle), rated D-; Auburn High School (high), rated D-. All sit in Rockford School District 205. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4xx Underwood St, Rockford, IL compare to other homes in Rockford 61101?

Among the 6,665 homes in Rockford 61101, it is worth more than 5% of them ($56,854 against a typical $99,921) and its lot is bigger than 7% of them (0.14 ac against a typical 0.18 ac). Measured against all of Winnebago County, it is worth more than 2% 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 4xx Underwood St, Rockford, IL?

The 2025 property tax bill for 4xx Underwood St, Rockford, IL was $52. The county assessed it at $587.

Closest homes

More homes in Rockford 61101

Assigned schools

Explore the area

See this home in context

Open 4xx Underwood 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