4581 N Mulligan Ave
Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.
This building has 0 building violations (7y), at or below the Portage Park average of 0.6.
What's in the 4581 N Mulligan Ave report
| Units | 2 |
|---|---|
| Year built | 1918 |
| Stories | — |
| Building area | 2,027 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 13171090720000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with a risk rating for each.
Unlock complete reportThe two-unit residential building at 4581 N Mulligan Ave in Chicago's Portage Park neighborhood is an approximately 105-year-old structure currently owned by J Koziara. Over the past seven years, there have been four documented 311 service requests associated with the property, with the most recent occurring in late 2025. The service requests have primarily related to municipal infrastructure rather than building-specific issues, including a garbage cart maintenance request, a tree trimming request (which is no longer being accepted), a street pothole complaint, and a sewer cleaning inspection request. All of these service requests have been marked as closed, indicating that the city has addressed these matters as they pertained to public services. Notably, there have been no documented building-specific complaints or safety concerns on record, and all service requests have been routine in nature, primarily involving municipal infrastructure rather than the building itself.
AI-generated · may contain errors · check the source data tables below
How 4581 N Mulligan 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
Lower risk — safer than most nearby
City inspectors rarely find violations here. Strong maintenance history and a clean complaint record.
Typical — about average for the neighborhood
Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.
Higher risk — riskier than most nearby
Elevated violation and complaint history. City inspectors have found issues here before and are statistically likely to again.
Out of 3924 buildings in this neighborhood, 2276 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.
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.
4581 N Mulligan Ave apartment reviews
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4581 N Mulligan Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 1 events
Full history back to 2023 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 4581 N Mulligan 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.
| SR # | Created | Type | Department | Status |
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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