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Single Family ResidenceResidential
$535,841
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 98How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $525,000 on Feb 16, 2026

503 ISLAND DR

DEFOREST, WI 53532
0
Baths
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$536K
$526K low$546K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$525,000 · Feb 16, 2026
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$115,841
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$92,673
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.79%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$420,000
THE BANK OF NEW GLARUS · recorded Feb 16, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,388 (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.$436,600 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$96,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$340,600
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$436,600
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$474,500

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.0.30
HeatingThe type of heating system in the home.None

Transaction History(2)

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
Yahara Elementary SchoolA
Elementary · Grades KG–3 · 0.6 mi
M
DeForest Middle SchoolB
Middle · Grades 7–8 · 1.2 mi
H
DeForest High SchoolA-
High · Grades 9–12 · 1.7 mi

District: Deforest Area School District

Neighborhood · ZIP 53532These 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.45
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 100.22

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
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.18,206
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.335 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$108,687
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$122,746
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.33 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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

503 Island 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 72% of homes in Deforest 53532

What homes are worth in Deforest 53532

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

This home
$215K$831K

This home is worth more than 72% of homes in Deforest 53532.

How it measures up in Deforest 53532

The dot is this home. The mark in the middle is the typical home in Deforest 53532.

Estimated value$535,841
CheaperTypical $448,545Pricier

Pricier than 72% of homes nearby

Lot size0.31 ac
SmallerTypical 0.3 acBigger

Bigger than 51% of homes nearby

How 503 Island Dr ranks against every home in each area.
MeasureThis homeDeforest 53532Dane County
Estimated valuepricier than$535,84172% of homes71% of homes
Lot sizebigger than0.31 ac51% of homes64% of homes

About 503 Island Dr

How much is 503 Island Dr, Deforest, WI worth?

The TopHap Estimate for 503 Island Dr, Deforest, WI is $535,841 as of Jul 14, 2026. The likely range is $525,589 to $546,093. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 503 Island Dr, Deforest, WI last sell?

503 Island Dr, Deforest, WI last sold on Feb 16, 2026 for $525,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

What schools serve 503 Island Dr, Deforest, WI?

503 Island Dr, Deforest, WI is assigned to Yahara Elementary School (elementary), rated A; DeForest Middle School (middle), rated B; DeForest High School (high), rated A-. All sit in Deforest Area School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 503 Island Dr, Deforest, WI compare to other homes in Deforest 53532?

Among the 5,937 homes in Deforest 53532, it is worth more than 72% of them ($535,841 against a typical $448,545) and its lot is bigger than 51% of them (0.31 ac against a typical 0.3 ac). Measured against all of Dane County, it is worth more than 71% 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 503 Island Dr, Deforest, WI?

The 2025 property tax bill for 503 Island Dr, Deforest, WI was $7,388. The county assessed it at $436,600.

Closest homes

More homes in Deforest 53532

Assigned schools

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