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Single Family ResidenceResidential
$407,011$189 / 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 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $30,000 on Dec 8, 2003

4101 GREENBRIAR DR

JANESVILLE, WI 53546
5
Beds
3
Baths
2,156 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$407K
$386K low$428K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$30,000 · Dec 8, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,662 (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.$351,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$28,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$322,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$351,600

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.Split Level
CountyRock
Lot (acres)The size of the land the home sits on, from county records.0.26
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 224 ft²Patio · 224 ft²Porch · 190 ft²

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

E
Harmony Elementary SchoolA+
Elementary · Grades PK–3 · 0.2 mi
H
Milton High SchoolC+
High · Grades 9–12 · 3.3 mi
M
Milton Middle SchoolB+
Middle · Grades 7–8 · 3.8 mi

District: Milton School District

Neighborhood · ZIP 53546These 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.102
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 100.32

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.96%
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.7.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.31,634
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.403 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,028
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,718
Average tempThe average temperature here across a full year.47°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

4101 Greenbriar 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 more than 83% of homes in Janesville 53546
  • Costs less per square foot than 76% of homes in Janesville 53546
  • Bigger than 89% of homes in Janesville 53546
  • Newer than 91% of homes in Rock County

What homes are worth in Janesville 53546

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

This home
$152K$568K

This home is worth more than 83% of homes in Janesville 53546.

How it measures up in Janesville 53546

The dot is this home. The mark in the middle is the typical home in Janesville 53546.

Estimated value$407,011
CheaperTypical $307,790Pricier

Pricier than 83% of homes nearby

Price per ft²$189
CheaperTypical $219Pricier

Pricier than 24% of homes nearby

Living area2,156 ft²
SmallerTypical 1,368 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.26 ac
SmallerTypical 0.25 acBigger

Bigger than 53% of homes nearby

Year built2003
OlderTypical 1986Newer

Newer than 86% of homes nearby

How 4101 Greenbriar Dr ranks against every home in each area.
MeasureThis homeJanesville 53546Rock County
Estimated valuepricier than$407,01183% of homes80% of homes
Price per ft²pricier than$18924% of homes47% of homes
Living areabigger than2,156 ft²89% of homes86% of homes
Lot sizebigger than0.26 ac53% of homes49% of homes
Year builtnewer than200386% of homes91% of homes

About 4101 Greenbriar Dr

How much is 4101 Greenbriar Dr, Janesville, WI worth?

The TopHap Estimate for 4101 Greenbriar Dr, Janesville, WI is $407,011 as of Sep 24, 2026. The likely range is $386,257 to $427,765. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4101 Greenbriar Dr, Janesville, WI last sell?

4101 Greenbriar Dr, Janesville, WI last sold on Dec 8, 2003 for $30,000, according to the county's recorded deed.

How big is 4101 Greenbriar Dr, Janesville, WI?

4101 Greenbriar Dr, Janesville, WI has 5 bedrooms, 3 bathrooms, 2,156 square feet of living space and a 0.26-acre lot.

When was 4101 Greenbriar Dr, Janesville, WI built?

4101 Greenbriar Dr, Janesville, WI was built in 2003, making it 23 years old. It is a split level home. The building has 2 stories.

What schools serve 4101 Greenbriar Dr, Janesville, WI?

4101 Greenbriar Dr, Janesville, WI is assigned to Harmony Elementary School (elementary), rated A+; Milton High School (high), rated C+; Milton Middle School (middle), rated B+. All sit in Milton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4101 Greenbriar Dr, Janesville, WI compare to other homes in Janesville 53546?

Among the 10,824 homes in Janesville 53546, it is worth more than 83% of them ($407,011 against a typical $307,790), its price per square foot is higher than 24% of them ($189 against a typical $219), it is bigger than 89% of them (2,156 ft² against a typical 1,368 ft²), its lot is bigger than 53% of them (0.26 ac against a typical 0.25 ac) and it is newer than 86% of them (2003 against a typical 1986). Measured against all of Rock County, it is worth more than 80% 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 4101 Greenbriar Dr, Janesville, WI?

The 2025 property tax bill for 4101 Greenbriar Dr, Janesville, WI was $5,662. The county assessed it at $351,600.

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Assigned schools

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