1811 W 21St St
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 Lower West Side average of 0.9.
What's in the 1811 W 21St St report
| Units | 2 |
|---|---|
| Year built | 1887 |
| Stories | — |
| Building area | 1,995 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 17194230200000 |
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 1811 W 21st Street in Chicago's Lower West Side neighborhood, owned by 1811 21ST STREET LLC, has been in operation since 1887. The property has had a total of six documented service requests through the 311 system over the past seven years, with the most recent three incidents occurring within the same year (2025) and featuring two consecutive snow-related complaints regarding uncleared sidewalks in December and November 2025. The building's other documented incidents include a building violation in June 2025, a street pothole complaint in May 2025, a street cleaning request in October 2024, and a blue recycling cart issue in August 2024. While the total number of service requests is relatively low for a residential property of this age, it's worth noting that three of the six documented incidents have occurred within the same year (2025), with two of those being related to winter maintenance issues.
How 1811 W 21St 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 3674 buildings in this neighborhood, 698 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.
1811 W 21St St apartment reviews
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1811 W 21St 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 2024 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 1811 W 21St 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