1420 N Dearborn Chicago
This building has a higher-than-average number of open problems nearby. A handful of unresolved issues. Worth a careful walk-through and pointed questions.
This building has 11 building violations (7y), above the Gold Coast average of 3.8.
What's in the 1420 N Dearborn Chicago report
| Units | 8 |
|---|---|
| Year built | 1891 |
| Stories | — |
| Building area | 11,100 sq ft |
| Property class | 315 |
| PIN (Cook County parcel) | 17042110110000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with risk grades for each.
Unlock complete reportThe 8-unit residential building at 1420 N Dearborn Street in Chicago's Gold Coast neighborhood, owned by D P OBRIEN MGT LLC, has been in operation since 1891 and has experienced several notable events over the past seven years. Most concerning are the seven open periodic routine inspection violations recorded in February 2026, marking a significant area of compliance attention. The building has also faced recent sanitation challenges, evidenced by three closed sanitation code violations and a rodent complaint in June 2026. Prior to these recent issues, the property had four documented service requests in 2025, including a building violation and a finance parking code enforcement review. The building's historical records from 1995 show two air pollution work order complaints, resulting in two municipal prosecution cases with $100 fines each, though these older violations were resolved. The property has had minimal construction activity in recent years, with only two building permits issued during the seven-year review period, and the ownership records show an unusual discrepancy between building and owner-level violation counts, with the owner records indicating a total of 25 violations and 66 service requests, though it's unclear why these figures differ from the building-specific counts.
AI-generated · may contain errors · check the source data tables below
How 1420 N Dearborn Chicago'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 89 buildings in this neighborhood, 54 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.
1420 N Dearborn Chicago apartment reviews
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1420 N Dearborn Chicago event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 15 events
Full history back to 1995 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 1420 N Dearborn Chicago 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