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CondominiumResidential

3909 W 123rd St

ALSIP, IL 60803
0.84 ac
Lot SizeThe size of the land the home sits on, from county records.
1968
Year BuiltThe year the home was originally built, according to county records.
Built 19683 floors28 units292–900 ft²
$3.4M
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.
$116K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$258
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+10.6%vs the Alsip ZIP median sale $/ft² ($233)

Sales Performance

$112K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-6.7%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
3.6%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.3%per yeartypical hold 6.5 yrsfrom 21 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19982002200620132016201920222026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19982002200620132016201920222026

46 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.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$73K$106K$139K$171K292 ft²414 ft²535 ft²657 ft²778 ft²900 ft²
1 bd2 bd3 bd
Studio
1 unit
1 bed
6 units
2 bed
19 units
3 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.
2 bd · 1 ba · 354 ft²
4 units
2 bd · 1 ba · 364 ft²
4 units
2 bd · 1 ba · 375 ft²
3 units
2 bd · 1 ba · 900 ft²
3 units
One-off layouts
14 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.

$73K–$73K
2 units
$86K–$99K
5 units
$102K–$106K
6 units
$113K–$120K
2 units
$129K–$133K
2 units
$139K–$139K
2 units
$152K–$161K
7 units
$171K–$178K
2 units

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$325/ft²
Floor 2
$261/ft²
Floor 3
$294/ft²
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·05
$408/ft²
Line ·04
$298/ft²
Line ·02
$296/ft²
Line ·06
$286/ft²
Line ·01
$259/ft²
Line ·03
$257/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.93%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.4%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.10.5 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.33%
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.47%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$119,900
Median tax billThe middle annual property tax bill among the building's units.$1,112
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 305ASep 1, 2026$112,000Unit 105AJan 23, 2025$120,000Unit 102AJan 22, 2025$148,000Unit 102AOct 11, 2024$50,000Unit 106AFeb 6, 2024$145,000Unit 104BFeb 10, 2022$77,500Unit 203BMay 25, 2021$60,000Unit 305AMar 18, 2020$46,000Unit 104ASep 5, 2019$62,000Unit 302AJul 18, 2019$62,000

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

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.48
54
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
72
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
76
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
40
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.17 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyCook
Lot (acres)The size of the land the home sits on, from county records.0.84
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Central

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

E
George Washington Elementary SchoolC-
Elementary · Grades KG–5 · 0.8 mi
H
Dwight D. Eisenhower High SchoolD-
High · Grades 9–12 · 1.2 mi
M
Nathan Hale Middle SchoolC-
Middle · Grades 6–8 · 2.2 mi

District: Community High School District 218

Neighborhood · ZIP 60803These 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.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.46

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.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.20,810
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,847 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,007
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,389
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.38 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.

3909 W 123rd St # 1
$178K
3909 W 123rd St Apt 101a
2 bd · 1 ba · 364 ft²
$105K
3909 W 123rd St Apt 102a
2 bd · 1 ba · 364 ft²
$171K
3909 W 123rd St # 102b
2 bd · 1 ba · 900 ft²
$153K
3909 W 123rd St Apt 103a
2 bd · 1 ba · 364 ft²
$90K
3909 W 123rd St # 103b
2 bd · 1 ba · 302 ft²
$113K
3909 W 123rd St Apt 104a
2 bd · 1 ba · 364 ft²
$139K
3909 W 123rd St # 104b
1 bd · 1 ba · 850 ft²
$129K
3909 W 123rd St Apt 105a
1 bd · 1 ba · 302 ft²
$139K
3909 W 123rd St # 106a
3 bd · 1 ba · 427 ft²
$161K
3909 W 123rd St Apt 201a
2 bd · 1 ba · 375 ft²
$104K
3909 W 123rd St # 201b
2 bd · 1 ba · 900 ft²
$155K
3909 W 123rd St # 202a
2 bd · 1 ba · 375 ft²
$161K
3909 W 123rd St Apt 203a
2 bd · 1 ba · 800 ft²
$155K
3909 W 123rd St # 203b
1 bd · 1 ba · 313 ft²
$73K
3909 W 123rd St Apt 204a
2 bd · 1 ba · 375 ft²
$89K
3909 W 123rd St # 204b
3 bd · 1 ba · 438 ft²
$99K
3909 W 123rd St # 205a
1 bd · 1 ba · 375 ft²
$133K
3909 W 123rd St Apt 206a
2 bd · 1 ba · 438 ft²
$103K
3909 W 123rd St Apt 301a
2 bd · 1 ba · 354 ft²
$106K
3909 W 123rd St Apt 302a
2 bd · 1 ba · 900 ft²
$152K
3909 W 123rd St # 302b
2 bd · 1 ba · 354 ft²
$86K
3909 W 123rd St Apt 303a
2 bd · 1 ba · 354 ft²
$102K
3909 W 123rd St # 303b
1 bd · 1 ba · 354 ft²
$73K
3909 W 123rd St Apt 304a
2 bd · 1 ba · 354 ft²
$91K
3909 W 123rd St # 304b
2 bd · 1 ba · 292 ft²
$155K
3909 W 123rd St # 305a
1 bd · 1 ba · 292 ft²
$120K
3909 W 123rd St Apt 306a
2 bd · 1 ba · 417 ft²
$102K

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

About 3909 W 123rd St

How many units are in 3909 W 123rd St, Alsip, IL?

3909 W 123rd St, Alsip, IL has 28 residential units across 3 floors, built in 1968, according to county assessor records.

What is a unit at 3909 W 123rd St, Alsip, IL worth?

The median TopHap Estimate across the 28 units at 3909 W 123rd St, Alsip, IL is $116,232. That works out to $258 per square foot. Units run from 292 to 900 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 3909 W 123rd St, Alsip, IL expensive for Alsip?

Units at 3909 W 123rd St, Alsip, IL carry a median of $258 per square foot, 11% above the Alsip median of $233 per square foot.

How often do units sell at 3909 W 123rd St, Alsip, IL?

1 units at 3909 W 123rd St, Alsip, IL sold in the last 12 months, out of 46 recorded arms-length sales all time. That is a turnover rate of 3.6% of the building per year. The median sale over that period was $112K.

Have units at 3909 W 123rd St, Alsip, IL appreciated?

Across 21 repeat sales of the same unit, 3909 W 123rd St, Alsip, IL returned a median 5.3% 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 6.5 years.

What floor plans does 3909 W 123rd St, Alsip, IL have?

The most common plan at 3909 W 123rd St, Alsip, IL is a 2-bedroom of 354 square feet, repeated 4 times, with a median estimate of $96,542. TopHap identifies 4 recurring plans in the building.

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