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Single Family ResidenceResidential
$553,944$281 / 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 $435,000 on Apr 20, 2020

420 SIDNEY ST

MADISON, WI 53703
3
Beds
2
Baths
1,973 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1918
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
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

$554K
$529K low$579K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$435,000 · Apr 20, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,979 (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.$583,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$157,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$426,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$583,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$583,600

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.12 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.Traditional/Old
CountyDane
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.1977
Lot (acres)The size of the land the home sits on, from county records.0.14
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
HeatingThe type of heating system in the home.None
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, Detached
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.Deck · 78 ft²Patio · 78 ft²Porch · 182 ft²

Transaction History(1)

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
Lapham Elementary School
Elementary · Grades PK–2 · 0.3 mi
M
O'Keeffe Middle SchoolA
Middle · Grades 6–8 · 0.8 mi
H
East High SchoolA-
High · Grades 9–12 · 1.0 mi

District: Madison Metropolitan School District

Neighborhood · ZIP 53703These 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.167
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.26

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.39%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.35%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.40,725
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.21,930 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$49,802
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,168
Average tempThe average temperature here across a full year.46°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

420 Sidney 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 more than 76% of homes in Madison 53703
  • Costs less per square foot than 87% of homes in Madison 53703
  • Bigger than 70% of homes in Tenney-Lapham
  • Has a smaller lot than 84% of homes in Dane County
  • Older than 93% of homes in Dane County

What homes are worth in Madison 53703

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

This home
$30K$1.5M

This home is worth more than 76% of homes in Madison 53703.

How it measures up in Madison 53703

The dot is this home. The mark in the middle is the typical home in Madison 53703.

Estimated value$553,944
CheaperTypical $319,711Pricier

Pricier than 76% of homes nearby

Price per ft²$281
CheaperTypical $399Pricier

Pricier than 13% of homes nearby

Living area1,973 ft²
SmallerTypical 1,578 ft²Bigger

Bigger than 68% of homes nearby

Lot size0.14 ac
SmallerTypical 0.1 acBigger

Bigger than 69% of homes nearby

Year built1918
OlderTypical 1923Newer

Newer than 48% of homes nearby

How 420 Sidney St ranks against every home in each area.
MeasureThis homeTenney-LaphamMadison 53703Dane County
Estimated valuepricier than$553,94471% of homes76% of homes72% of homes
Price per ft²pricier than$28119% of homes13% of homes66% of homes
Living areabigger than1,973 ft²70% of homes68% of homes66% of homes
Lot sizebigger than0.14 ac78% of homes69% of homes16% of homes
Year builtnewer than191862% of homes48% of homes7% of homes

About 420 Sidney St

How much is 420 Sidney St, Madison, WI worth?

The TopHap Estimate for 420 Sidney St, Madison, WI is $553,944 as of Sep 24, 2026. The likely range is $528,570 to $579,318. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 420 Sidney St, Madison, WI last sell?

420 Sidney St, Madison, WI last sold on Apr 20, 2020 for $435,000, according to the county's recorded deed.

How big is 420 Sidney St, Madison, WI?

420 Sidney St, Madison, WI has 3 bedrooms, 2 bathrooms, 1,973 square feet of living space and a 0.14-acre lot.

When was 420 Sidney St, Madison, WI built?

420 Sidney St, Madison, WI was built in 1918, making it 108 years old. It is a traditional/old home. The building has 2 stories.

What schools serve 420 Sidney St, Madison, WI?

420 Sidney St, Madison, WI is assigned to Lapham Elementary School (elementary); O'Keeffe Middle School (middle), rated A; East High School (high), rated A-. All sit in Madison Metropolitan School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 420 Sidney St, Madison, WI compare to other homes in Madison 53703?

Among the 6,585 homes in Madison 53703, it is worth more than 76% of them ($553,944 against a typical $319,711), its price per square foot is higher than 13% of them ($281 against a typical $399), it is bigger than 68% of them (1,973 ft² against a typical 1,578 ft²), its lot is bigger than 69% of them (0.14 ac against a typical 0.1 ac) and it is newer than 48% of them (1918 against a typical 1923). Measured against all of Dane County, it is worth more than 72% 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 420 Sidney St, Madison, WI?

The 2024 property tax bill for 420 Sidney St, Madison, WI was $9,979. The county assessed it at $583,600.

More homes on Sidney St

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Assigned schools

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