4020 N Kilbourn Ave 1St
Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.
This building has 0 building violations (7y), at or below the Chicago average of 1.6.
We don't rank this building against its neighbors. The model's estimates for this neighborhood sit too close together for an ordering between them to mean anything.
What's in the 4020 N Kilbourn Ave 1St report
| Units | 2 |
|---|---|
| Year built | 1904 |
| Stories | — |
| Building area | 1,760 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 13153180650000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with a risk rating for each.
Unlock complete reportThe two-unit residential building at 4020 N Kilbourn Ave in Chicago's Irving Park neighborhood, owned by Nancy Martinez, has been in place since 1904 and has experienced various maintenance and service issues over the past seven years. The property currently has several active concerns as of 2026, including an open request for a water lead test kit and an open garbage cart maintenance issue. Recent service requests from 2026 also indicate recurring challenges with waste management infrastructure, as evidenced by both open and closed garbage cart maintenance requests. The building faced several environmental and infrastructure concerns earlier in the year, including a water issue on the street in March 2026 and an alley pothole complaint in May 2026. The property's maintenance history includes a sewer cleaning inspection request that was resolved in March 2026. While the building has a documented history of service requests, dating back to 2016, the current concentration of maintenance issues in 2026 suggests ongoing challenges with basic infrastructure and waste management systems in the neighborhood.
AI-generated · may contain errors · check the source data tables below
How 4020 N Kilbourn Ave 1St'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.
We don't rank this building against its neighbors. The model's estimates within Chicago sit too close together for an ordering between them to mean anything.
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.
4020 N Kilbourn Ave 1St apartment reviews
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4020 N Kilbourn Ave 1St 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 4020 N Kilbourn Ave 1St 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.
| 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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