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Single Family ResidenceResidential
$301,506$179 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $125,000 on Sep 2, 2016

20 S MARTIN RD

JANESVILLE, WI 53545
3
Beds
2
Baths
1,684 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1961
Year BuiltThe year the home was originally built, according to county records.
2
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

$302K
$284K low$319K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$125,000 · Sep 2, 2016

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,989 (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.$235,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$27,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$207,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$235,500

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.13 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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.Colonial
CountyRock
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1969
Lot (acres)The size of the land the home sits on, from county records.0.28
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 · 368 ft²Patio · 550 ft²

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

H
Craig High SchoolC
High · Grades 9–12 · 0.6 mi
E
Monroe Elementary SchoolA
Elementary · Grades KG–5 · 0.8 mi
M
Marshall Middle SchoolC
Middle · Grades 6–8 · 0.8 mi

District: Janesville School District

Neighborhood · ZIP 53545These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.30

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.22,576
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.928 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,159
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,377
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.34 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

20 S Martin Rd 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 65% of homes in Janesville 53545
  • Bigger than 71% of homes in Rock County
  • Has a bigger lot than 71% of homes in Janesville 53545

What homes are worth in Janesville 53545

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

This home
$146K$701K

This home is worth more than 65% of homes in Janesville 53545.

How it measures up in Janesville 53545

The dot is this home. The mark in the middle is the typical home in Janesville 53545.

Estimated value$301,506
CheaperTypical $275,926Pricier

Pricier than 65% of homes nearby

Price per ft²$179
CheaperTypical $196Pricier

Pricier than 37% of homes nearby

Living area1,684 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.28 ac
SmallerTypical 0.23 acBigger

Bigger than 71% of homes nearby

Year built1961
OlderTypical 1958Newer

Newer than 57% of homes nearby

How 20 S Martin Rd ranks against every home in each area.
MeasureThis homeJanesville 53545Rock County
Estimated valuepricier than$301,50665% of homes60% of homes
Price per ft²pricier than$17937% of homes50% of homes
Living areabigger than1,684 ft²67% of homes71% of homes
Lot sizebigger than0.28 ac71% of homes55% of homes
Year builtnewer than196157% of homes49% of homes

About 20 S Martin Rd

How much is 20 S Martin Rd, Janesville, WI worth?

The TopHap Estimate for 20 S Martin Rd, Janesville, WI is $301,506 as of Aug 30, 2026. The likely range is $284,198 to $318,814. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 S Martin Rd, Janesville, WI last sell?

20 S Martin Rd, Janesville, WI last sold on Sep 2, 2016 for $125,000, according to the county's recorded deed.

How big is 20 S Martin Rd, Janesville, WI?

20 S Martin Rd, Janesville, WI has 3 bedrooms, 2 bathrooms, 1,684 square feet of living space and a 0.28-acre lot.

When was 20 S Martin Rd, Janesville, WI built?

20 S Martin Rd, Janesville, WI was built in 1961, making it 65 years old. It is a colonial home. The building has 2 stories.

What schools serve 20 S Martin Rd, Janesville, WI?

20 S Martin Rd, Janesville, WI is assigned to Craig High School (high), rated C; Monroe Elementary School (elementary), rated A; Marshall Middle School (middle), rated C. All sit in Janesville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 S Martin Rd, Janesville, WI compare to other homes in Janesville 53545?

Among the 7,842 homes in Janesville 53545, it is worth more than 65% of them ($301,506 against a typical $275,926), its price per square foot is higher than 37% of them ($179 against a typical $196), it is bigger than 67% of them (1,684 ft² against a typical 1,434 ft²), its lot is bigger than 71% of them (0.28 ac against a typical 0.23 ac) and it is newer than 57% of them (1961 against a typical 1958). Measured against all of Rock County, it is worth more than 60% 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 20 S Martin Rd, Janesville, WI?

The 2025 property tax bill for 20 S Martin Rd, Janesville, WI was $3,989. The county assessed it at $235,500.

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Assigned schools

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