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CondominiumResidential

1150 WILLIAMSON ST

MADISON, WI 53703
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
Built 199919 units857–1,132 ft²
$2.9M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$53K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$352
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-2.8%vs the Madison ZIP median sale $/ft² ($362)

Sales Performance

$325K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
5.3%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.7%per yeartypical hold 9.0 yrsfrom 10 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20062010201320152020202120242026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20062010201320152020202120242026

24 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Studio
13 units
1 bed
4 units
2 bed
2 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
1 bd · 1 ba · 1,001 ft²
2 units
One-off layouts
17 units

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$53K–$66K
12 units
$345K–$345K
1 unit
$366K–$394K
5 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.63%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.5%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.11.3 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.43%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.22%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$61,652
Median tax billThe middle annual property tax bill among the building's units.$129
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit P4Jan 5, 2026$325,000Unit 103Mar 15, 2024$426,300Unit P2Mar 15, 2024$426,300Unit P12Mar 15, 2024$426,300Unit 205Dec 22, 2021$300,000Unit P3Dec 22, 2021$300,000Unit P4Nov 5, 2021$243,000Unit 204Oct 20, 2020$234,900Unit P1Oct 20, 2020$234,900Unit 204May 23, 2017$215,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
CountyDane
Lot (acres)The size of the land the home sits on, from county records.0.17
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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 · 0.4 mi
M
O'Keeffe Middle SchoolB-
Middle · Grades 6–8 · 0.4 mi
H
East High SchoolD-
High · Grades 9–12 · 1.1 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%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

1150 Williamson St
$53K
1150 Williamson St # P1
$53K
1150 Williamson St # P2
$53K
1150 Williamson St # P3
$53K
1150 Williamson St # P4
$66K
1150 Williamson St # P5
$53K
1150 Williamson St # P6
$53K
1150 Williamson St # P7
$53K
1150 Williamson St # P8
$53K
1150 Williamson St # P9
$53K
1150 Williamson St # P10
$53K
1150 Williamson St # P11
$53K
1150 Williamson St # P12
$53K
1150 Williamson St Apt 102
1 bd · 1 ba · 1,027 ft²
$366K
1150 Williamson St Apt 103
2 bd · 1 ba · 1,132 ft²
$394K
1150 Williamson St Ste 104
857 ft²
1150 Williamson St Apt 202
1 bd · 1 ba · 1,001 ft²
$383K
1150 Williamson St Apt 203
2 bd · 1 ba · 1,102 ft²
$394K
1150 Williamson St Apt 204
1 bd · 1 ba · 1,001 ft²
$345K
1150 Williamson St Apt 205
1 bd · 1 ba · 1,090 ft²
$378K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 1150 Williamson St

How many units are in 1150 Williamson St, Madison, WI?

1150 Williamson St, Madison, WI has 19 residential units across built in 1999, according to county assessor records.

What is a unit at 1150 Williamson St, Madison, WI worth?

The median TopHap Estimate across the 19 units at 1150 Williamson St, Madison, WI is $52,589. That works out to $352 per square foot. Units run from 857 to 1,132 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 1150 Williamson St, Madison, WI expensive for Madison?

Units at 1150 Williamson St, Madison, WI carry a median of $352 per square foot, 3% below the Madison median of $362 per square foot.

How often do units sell at 1150 Williamson St, Madison, WI?

1 units at 1150 Williamson St, Madison, WI sold in the last 12 months, out of 24 recorded arms-length sales all time. That is a turnover rate of 5.3% of the building per year. The median sale over that period was $325K.

Have units at 1150 Williamson St, Madison, WI appreciated?

Across 10 repeat sales of the same unit, 1150 Williamson St, Madison, WI returned a median 5.7% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 9.0 years.

What floor plans does 1150 Williamson St, Madison, WI have?

The most common plan at 1150 Williamson St, Madison, WI is a 1-bedroom of 1,001 square feet, repeated 2 times, with a median estimate of $363,814. TopHap identifies 1 recurring plans in the building.

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Assigned schools

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