4907 S Kostner Ave
This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.
This building has 4 building violations (7y), above the Archer Heights average of 0.8.
What's in the 4907 S Kostner Ave report
| Units | 2 |
|---|---|
| Year built | 1941 |
| Stories | — |
| Building area | 1,663 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 19102160030000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with risk grades for each.
Unlock complete reportThe property at 4907 S Kostner Ave is a two-unit residential building located in Chicago's Archer Heights neighborhood, owned by Jordy A Estrada and constructed in 1941. The building's recent history shows a concerning pattern of unresolved issues, with four open violations stemming from complaint-driven inspections conducted on July 15, 2021, all of which remain outstanding as of October 2023. While there have been some municipal service requests associated with the property, the majority of these were resolved relatively quickly: two water-related complaints on the street in May and July of 2024 were both closed, as was a garbage cart maintenance request from April 2026. The building's violation record, particularly the unresolved nature of the 2021 inspections, suggests potential ongoing compliance issues that merit attention, though the relatively recent nature of the water complaints and garbage maintenance issues might indicate more routine maintenance concerns rather than serious structural or safety problems.
AI-generated · may contain errors · check the source data tables below
How 4907 S Kostner Ave's risk score is calculated
We trained a model on 7 years of Chicago code enforcement data — building violations, 311 complaint history, environmental enforcement, and owner track records. It estimates the probability that the City of Chicago will find a code violation at this address in the next 12 months. Lower % = safer.
What the score means for you
Grade A–B — Low risk
City inspectors rarely find violations here. Strong maintenance history and a clean complaint record.
Grade C — Moderate risk
Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.
Grade D–F — High risk
Elevated violation and complaint history. City inspectors have found issues here before and are statistically likely to again.
Out of 836 buildings in this neighborhood, 727 are predicted to be safer.
violation
likely
What's driving this score
The data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.
4907 S Kostner Ave apartment reviews
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4907 S Kostner Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 7 events
Full history back to 2021 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 4907 S Kostner Ave apartments
Chicago public datasets for this parcel — building violations, permits, 311 calls, environmental complaints and enforcement, scofflaw listings, and vacant building registrations.
What this is
Violations issued by the City of Chicago Department of Buildings against this parcel.
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What this is
Violations issued for failure to register or maintain a vacant or abandoned building.
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What this is
Building permits issued by the City of Chicago for new construction, alterations, and repairs at this parcel.
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What this is
Chicago 311 service requests recorded at this parcel — maintenance complaints and quality-of-life requests.
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What this is
Environmental complaints filed about this property with the City of Chicago.
| Complaint # | Date | Type | Inspector | Resolution | Resolved |
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What this is
Formal environmental enforcement cases brought against this property.
| Case # | Date | Type | Violation | Disposition | Status | Fine |
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Cancel anytime · Data sourced from the City of Chicago Department of Buildings, Chicago 311, Cook County Assessor & the Chicago Data Portal