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Single Family ResidenceResidential
$269,254$160 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $361,500 on Jun 24, 2026

21870 W LAKE AVE

ROUND LAKE, IL 60073
3
Beds
1
Baths
1,680 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.
0.12 ac
Lot SizeThe size of the land the home sits on, from county records.
1933
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$269K
$247K low$291K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$361,500 · Jun 24, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,600 (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.$70,970 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,298
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$59,672
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$64,081
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$212,931

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.0.12
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 With Air Conditioning
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.DeckPatio · 208 ft²Porch · 24 ft²

Transaction History(3)

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
Grayslake North High SchoolB-
High · Grades 9–12 · 1.0 mi
E
Prairieview SchoolA-
Elementary · Grades KG–4 · 1.4 mi
M
Grayslake Middle SchoolC+
Middle · Grades 7–8 · 1.6 mi

District: Grayslake Consolidated Community School District 46

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%

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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

21870 W Lake Ave 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 76% of homes in Lake County
  • Costs less per square foot than 92% of homes in Lake County
  • Bigger than 68% of homes in Round Lake 60073
  • Has a smaller lot than 82% of homes in Lake County
  • Older than 97% 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
$137K$541K

This home is worth more than 49% 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$269,254
CheaperTypical $274,013Pricier

Pricier than 49% of homes nearby

Price per ft²$160
CheaperTypical $197Pricier

Pricier than 12% of homes nearby

Living area1,680 ft²
SmallerTypical 1,418 ft²Bigger

Bigger than 68% of homes nearby

Lot size0.12 ac
SmallerTypical 0.14 acBigger

Bigger than 35% of homes nearby

Year built1933
OlderTypical 1995Newer

Newer than 3% of homes nearby

How 21870 W Lake Ave ranks against every home in each area.
MeasureThis homeRound Lake 60073Lake County
Estimated valuepricier than$269,25449% of homes24% of homes
Price per ft²pricier than$16012% of homes8% of homes
Living areabigger than1,680 ft²68% of homes47% of homes
Lot sizebigger than0.12 ac35% of homes18% of homes
Year builtnewer than19333% of homes7% of homes

About 21870 W Lake Ave

How much is 21870 W Lake Ave, Round Lake, IL worth?

The TopHap Estimate for 21870 W Lake Ave, Round Lake, IL is $269,254 as of Oct 21, 2026. The likely range is $247,296 to $291,212. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21870 W Lake Ave, Round Lake, IL last sell?

21870 W Lake Ave, Round Lake, IL last sold on Jun 24, 2026 for $361,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21870 W Lake Ave, Round Lake, IL?

21870 W Lake Ave, Round Lake, IL has 3 bedrooms, 1 bathrooms, 1,680 square feet of living space and a 0.12-acre lot.

When was 21870 W Lake Ave, Round Lake, IL built?

21870 W Lake Ave, Round Lake, IL was built in 1933, making it 93 years old. It is a conventional home. The building has 2 stories.

What schools serve 21870 W Lake Ave, Round Lake, IL?

21870 W Lake Ave, Round Lake, IL is assigned to Grayslake North High School (high), rated B-; Prairieview School (elementary), rated A-; Grayslake Middle School (middle), rated C+. All sit in Grayslake Consolidated Community School District 46. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21870 W Lake Ave, Round Lake, IL compare to other homes in Round Lake 60073?

Among the 19,179 homes in Round Lake 60073, it is worth more than 49% of them ($269,254 against a typical $274,013), its price per square foot is higher than 12% of them ($160 against a typical $197), it is bigger than 68% of them (1,680 ft² against a typical 1,418 ft²), its lot is bigger than 35% of them (0.12 ac against a typical 0.14 ac) and it is newer than 3% of them (1933 against a typical 1995). Measured against all of Lake County, it is worth more than 24% 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 21870 W Lake Ave, Round Lake, IL?

The 2024 property tax bill for 21870 W Lake Ave, Round Lake, IL was $2,600. The county assessed it at $70,970.

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