248 W 31St St
This building has significantly more problems than most nearby buildings. 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 Armour Square average of 0.7.
What's in the 248 W 31St St report
| Units | 6 |
|---|---|
| Year built | 1895 |
| Stories | — |
| Building area | 6,357 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 17284350310000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with risk grades for each.
Unlock complete reportThe six-unit residential building at 248 W 31st Street in Armour Square, owned by Bai Bing Mendez, has been standing since 1895 and has experienced several maintenance and safety issues in recent years. The property has generated a total of 11 service requests over the past seven years, with the majority occurring in 2025-2026. Most recently, there are multiple street lighting concerns in close succession, with one pending resolution as of May 2026 and another that was resolved in April 2026. The building has also faced pest control challenges, with two documented rodent-related complaints in 2025 and 2026, both of which were addressed through the appropriate channels. Additional maintenance issues have included a graffiti incident in December 2025 and a parking enforcement matter in April 2026, both of which were resolved. While the building's age and history are noteworthy, the recent pattern of service requests suggests ongoing infrastructure and maintenance needs in the immediate surroundings.
AI-generated · may contain errors · check the source data tables below
How 248 W 31St St'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 508 buildings in this neighborhood, 437 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.
248 W 31St St apartment reviews
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248 W 31St St 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 2025 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 248 W 31St St 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