5243 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 Jefferson Park average of 0.4.
The bar and the rating point different ways because they measure different things: the bar counts building violations already on file, the rating forecasts the next 12 months.
What's in the 5243 N Mulligan Ave report
| Units | 2 |
|---|---|
| Year built | 1956 |
| Stories | — |
| Building area | 2,056 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 13081250060000 |
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 5243 N Mulligan Ave in Jefferson Park, owned by Witold Kowalczyk, was constructed in 1956 and has had minimal documented service requests over the past seven years, with a total of four recorded through the city's 311 system. The most recent incident occurred in April 2026, involving a rodent baiting request that was subsequently closed. Prior to this, there were two separate tree emergency situations reported between September 2025 and November 2024, both of which were directed to the Alderman's office and marked as closed. The only other documented service request during this period was in July 2024, regarding a potential leak that required investigation by city services, though the specifics of the resolution are not detailed in the available records. While the number of service requests is relatively low for this seven-year period, the varied nature of the incidents - including concerns about pests, tree issues, and water infrastructure - suggests occasional maintenance challenges in the property's immediate environment.
AI-generated · may contain errors · check the source data tables below
How 5243 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 1632 buildings in this neighborhood, 1240 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.
5243 N Mulligan Ave apartment reviews
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5243 N Mulligan Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 2 events
Full history back to 2024 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 5243 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.
| Permit # | Issued | Status | Description |
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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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Unlock complete reportHow 5243 N Mulligan Ave compares to the neighborhood
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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