5339 W Winnemac Ave
Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. 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 5339 W Winnemac Ave report
| Units | 2 |
|---|---|
| Year built | 1923 |
| Stories | — |
| Building area | 1,932 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 13093140080000 |
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 5339 W Winnemac Ave in Jefferson Park, owned by Yajie Zou, has shown a concerning pattern of pest control issues in recent months. Between February 2026 and May 2026, there were seven documented complaints regarding rodent activity at the property, all of which have been officially closed but indicate an ongoing pest management challenge for the building. This recent cluster of rodent-related complaints represents the majority of service requests made to the 311 system for this property over the past seven years, suggesting that while the issue appears to have been addressed promptly through official channels, it may reflect ongoing maintenance or environmental challenges in the building's surroundings. The structure itself, built in 1923, has had a total of 42 service requests filed through the 311 system in the past seven years, though the specific nature of these other requests is not detailed in the provided data. While the rodent complaints have been resolved according to the system records, the frequency of these incidents over a relatively short period would merit attention, though no other recent complaints have been filed since May 2026.
AI-generated · may contain errors · check the source data tables below
How 5339 W Winnemac 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, 1550 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.
5339 W Winnemac Ave apartment reviews
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5339 W Winnemac Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 5 events
Full history back to 2026 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 5339 W Winnemac 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.
| Violation # | Date | Category | Status | Address |
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What this is
Violations issued for failure to register or maintain a vacant or abandoned building.
| Docket # | Violation # | Issued | Department | Type | Disposition | Total Fines |
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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 5339 W Winnemac 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