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Single Family ResidenceResidential
$146,861$167 / 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 85How 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 $138,000 on Aug 27, 2025

509 KNOLLWOOD DR

ROUND LAKE PARK, IL 60073
1
Baths
882 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.
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1942
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$147K
$125K low$169K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$138,000 · Aug 27, 2025
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.$146,861
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$117,489

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,004 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$33,220 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$7,373
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$25,847
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$33,220
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$99,670

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.Conventional
CountyLake
Lot (acres)The size of the land the home sits on, from county records.0.10
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(8)

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(1)

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

E
W J Murphy Elementary School
Elementary · Grades 1–5 · 0.7 mi
M
John T. Magee Middle SchoolC-
Middle · Grades 6–8 · 1.1 mi
H
Round Lake High SchoolC
High · Grades 9–12 · 1.1 mi

District: Round Lake Community Unit School District 116

Neighborhood · ZIP 60073These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.97%
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.11%
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.55,828
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,687 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,400
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$103,944
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.54%

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

509 Knollwood 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 less than 98% of homes in Lake County
  • Costs less per square foot than 90% of homes in Lake County
  • Smaller than 95% of homes in Lake County
  • Has a smaller lot than 90% of homes in Lake County
  • Older than 92% of homes in Round Lake 60073

What homes are worth in Round Lake 60073

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

This home
$132K$512K

This home is worth more than 3% of homes in Round Lake 60073.

How it measures up in Round Lake 60073

The dot is this home. The mark in the middle is the typical home in Round Lake 60073.

Estimated value$146,861
CheaperTypical $272,123Pricier

Pricier than 3% of homes nearby

Price per ft²$167
CheaperTypical $195Pricier

Pricier than 18% of homes nearby

Living area882 ft²
SmallerTypical 1,426 ft²Bigger

Bigger than 7% of homes nearby

Lot size0.1 ac
SmallerTypical 0.15 acBigger

Bigger than 14% of homes nearby

Year built1942
OlderTypical 1995Newer

Newer than 8% of homes nearby

How 509 Knollwood Dr ranks against every home in each area.
MeasureThis homeRound Lake 60073Lake County
Estimated valuepricier than$146,8613% of homes2% of homes
Price per ft²pricier than$16718% of homes10% of homes
Living areabigger than882 ft²7% of homes5% of homes
Lot sizebigger than0.1 ac14% of homes10% of homes
Year builtnewer than19428% of homes10% of homes

About 509 Knollwood Dr

How much is 509 Knollwood Dr, Round Lake Park, IL worth?

The TopHap Estimate for 509 Knollwood Dr, Round Lake Park, IL is $146,861 as of Jul 14, 2026. The likely range is $124,644 to $169,078. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Knollwood Dr, Round Lake Park, IL last sell?

509 Knollwood Dr, Round Lake Park, IL last sold on Aug 27, 2025 for $138,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 509 Knollwood Dr, Round Lake Park, IL?

509 Knollwood Dr, Round Lake Park, IL has 1 bathrooms, 882 square feet of living space and a 0.10-acre lot.

When was 509 Knollwood Dr, Round Lake Park, IL built?

509 Knollwood Dr, Round Lake Park, IL was built in 1942, making it 84 years old. It is a conventional home. The building has 2 stories.

What schools serve 509 Knollwood Dr, Round Lake Park, IL?

509 Knollwood Dr, Round Lake Park, IL is assigned to W J Murphy Elementary School (elementary); John T. Magee Middle School (middle), rated C-; Round Lake High School (high), rated C. All sit in Round Lake Community Unit School District 116. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 Knollwood Dr, Round Lake Park, IL compare to other homes in Round Lake 60073?

Among the 19,173 homes in Round Lake 60073, it is worth more than 3% of them ($146,861 against a typical $272,123), its price per square foot is higher than 18% of them ($167 against a typical $195), it is bigger than 7% of them (882 ft² against a typical 1,426 ft²), its lot is bigger than 14% of them (0.1 ac against a typical 0.15 ac) and it is newer than 8% of them (1942 against a typical 1995). Measured against all of Lake 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 509 Knollwood Dr, Round Lake Park, IL?

The 2024 property tax bill for 509 Knollwood Dr, Round Lake Park, IL was $3,004. The county assessed it at $33,220.

Closest homes

More homes in Round Lake Park 60073

Assigned schools

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