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Quadplex (4 Units, Any Combination)Residential

529 Sidney Ave

GLENDALE HEIGHTS, IL 60139
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
Built 19704 units1,196–1,674 ft²
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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.
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Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
—
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

Sales Performance

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Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
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1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
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.
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
199920012003200620242025
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
199920012003200620242025

6 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.

3 bed
4 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.
3 bd · 1.5 ba · 1,196 ft²
2 units
3 bd · 1.5 ba · 1,674 ft²
2 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.50%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.0%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.11.1 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.0%
Median tax billThe middle annual property tax bill among the building's units.$5,143
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 AJul 23, 2025$200,000Unit DDec 26, 2024$197,000Unit AJun 2, 2006$180,000Unit AApr 16, 2003$156,000Unit DSep 24, 2001$116,000Unit DOct 4, 1999$80,000

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.Quadplex (4 Units, Any Combination)
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.10
ConstructionThe main material the home's frame and walls are built from.Mixed (Not Specified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Window A/C
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
Reskin Elementary SchoolC
Elementary · Grades KG–5 · 0.7 mi
M
Marquardt Middle SchoolC
Middle · Grades 6–8 · 1.6 mi
H
Glenbard East High SchoolC+
High · Grades 9–12 · 3.7 mi

District: Glenbard Township High School District 87

Neighborhood · ZIP 60139These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.123
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.29,694
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,119 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$82,732
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$98,431
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.37 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.

529 Sidney Ave
3 bd · 1.5 ba · 1,674 ft²
529 Sidney Ave # B
3 bd · 1.5 ba · 1,196 ft²
529 Sidney Ave # C
3 bd · 1.5 ba · 1,674 ft²
529 Sidney Ave
3 bd · 1.5 ba · 1,196 ft²

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

About 529 Sidney Ave

How many units are in 529 Sidney Ave, Glendale Heights, IL?

529 Sidney Ave, Glendale Heights, IL has 4 residential units across built in 1970, according to county assessor records.

How often do units sell at 529 Sidney Ave, Glendale Heights, IL?

0 units at 529 Sidney Ave, Glendale Heights, IL sold in the last 12 months, out of 6 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 529 Sidney Ave, Glendale Heights, IL appreciated?

Across 4 repeat sales of the same unit, 529 Sidney Ave, Glendale Heights, IL returned a median 3.5% 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 11.1 years.

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