4237 S Washtenaw Ave 1
This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.
This building has 0 building violations (7y), at or below the Brighton Park average of 0.8.
What's in the 4237 S Washtenaw Ave 1 report
| Units | 2 |
|---|---|
| Year built | 1924 |
| Stories | — |
| Building area | 2,296 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 19012180140000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with risk grades for each.
Unlock complete reportThe two-unit residential building at 4237 S Washtenaw Ave 1 in Brighton Park, constructed in 1924 and currently owned by Ji Wen Guo, has a relatively low number of recorded service requests over the past seven years, with a total of six complaints filed through the city's 311 system. The most recent activity, occurring in June 2026, involves abandoned vehicle complaints, with one case still open and another having been resolved. Prior to this, the property experienced a cluster of tree-related service requests in October 2024, with three separate trim requests submitted within a two-week period, all of which have been closed. Earlier in the year, in April 2024, there was another abandoned vehicle complaint that has since been resolved. While the building's 311 service request history is limited, it is worth noting that most of the issues reported have been related to external matters such as street-side concerns rather than building-specific problems, and the majority of cases have been promptly resolved.
AI-generated · may contain errors · check the source data tables below
How 4237 S Washtenaw Ave 1'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 3956 buildings in this neighborhood, 1147 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.
4237 S Washtenaw Ave 1 apartment reviews
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4237 S Washtenaw Ave 1 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 2024 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 4237 S Washtenaw Ave 1 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