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Single Family ResidenceResidential
$275,129
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 88How 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

520 GANNON AVE

MADISON, WI 53714
0
Baths
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$275K
$243K low$307K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,338 (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.$326,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$115,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$210,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$326,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$358,200

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.25
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Lowell Elementary SchoolC
Elementary · Grades PK–5 · 0.9 mi
H
East High SchoolA-
High · Grades 9–12 · 1.2 mi
M
O'Keeffe Middle SchoolA
Middle · Grades 6–8 · 1.8 mi

District: Madison Metropolitan School District

Neighborhood · ZIP 53714These 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.114
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.16,957
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,560 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,140
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,781
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

520 Gannon 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 82% of homes in Dane County
  • Has a bigger lot than 95% of homes in Worthington Park

What homes are worth in Madison 53714

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

This home
$165K$497K

This home is worth more than 20% of homes in Madison 53714.

How it measures up in Madison 53714

The dot is this home. The mark in the middle is the typical home in Madison 53714.

Estimated value$275,129
CheaperTypical $324,161Pricier

Pricier than 20% of homes nearby

Lot size0.25 ac
SmallerTypical 0.2 acBigger

Bigger than 78% of homes nearby

How 520 Gannon Ave ranks against every home in each area.
MeasureThis homeWorthington ParkMadison 53714Dane County
Estimated valuepricier than$275,12956% of homes20% of homes18% of homes
Lot sizebigger than0.25 ac95% of homes78% of homes47% of homes

About 520 Gannon Ave

How much is 520 Gannon Ave, Madison, WI worth?

The TopHap Estimate for 520 Gannon Ave, Madison, WI is $275,129 as of Aug 30, 2026. The likely range is $243,092 to $307,166. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

What schools serve 520 Gannon Ave, Madison, WI?

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

How does 520 Gannon Ave, Madison, WI compare to other homes in Madison 53714?

Among the 5,250 homes in Madison 53714, it is worth more than 20% of them ($275,129 against a typical $324,161) and its lot is bigger than 78% of them (0.25 ac against a typical 0.2 ac). Measured against all of Dane County, it is worth more than 18% 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 520 Gannon Ave, Madison, WI?

The 2025 property tax bill for 520 Gannon Ave, Madison, WI was $4,338. The county assessed it at $326,000.

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Assigned schools

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