254 W 31St St 3
This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.
This building has 3 building violations (7y), above the Armour Square average of 0.7.
What's in the 254 W 31St St 3 report
| Units | 4 |
|---|---|
| Year built | 1890 |
| Stories | — |
| Building area | 5,880 sq ft |
| Property class | 212 |
| PIN (Cook County parcel) | 17284350280000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with a risk rating for each.
Unlock complete reportThe four-unit residential building at 254 W 31st Street in Armour Square, owned by Dan Yun Chen, is a 133-year-old property constructed in 1890. The building's records over the past seven years show notable concerns, particularly regarding unresolved violations from September 2019 related to periodic routine inspections, with no recorded resolution to date. While the building has experienced various service requests, most recent incidents from 2026 suggest emerging issues with plumbing and water supply, though these complaints have since been resolved. Two other recent service requests from 2024 - for tree trimming and a blue recycling cart - were related to external maintenance and waste management rather than structural or plumbing concerns, and both have been closed. The building's records show a total of three building violations and four 311 service requests in the past seven years, with the majority of these issues appearing to be centered around the property's water systems and routine maintenance needs.
AI-generated · may contain errors · check the source data tables below
How 254 W 31St St 3'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 508 buildings in this neighborhood, 503 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.
254 W 31St St 3 apartment reviews
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254 W 31St St 3 event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 7 events
Full history back to 2019 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 254 W 31St St 3 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.
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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 254 W 31St St 3 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