1137 S Mason Ave
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 Austin average of 1.7.
What's in the 1137 S Mason Ave report
| Units | 2 |
|---|---|
| Year built | 1923 |
| Stories | — |
| Building area | 2,650 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 16174100130000 |
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 1137 S Mason Ave in Chicago's Austin neighborhood, owned by Luke and Danielle Petro, was constructed in 1923 and has had a limited number of service requests on record over the past seven years. Most notably, there are currently two water-related requests in the system - a water lead test kit request from October 2025 (which remains open) and a water lead test visit request from September 2025 (which has been closed). These recent water quality concerns are significant given their potential impact on resident health and safety. Additionally, the building has had two sanitation-related service requests in 2024, including one for garbage cart maintenance and another for a blue recycling cart, both of which were successfully closed. While the relatively low number of service requests might suggest minimal issues, the recent focus on water safety and the presence of unclosed service requests warrant attention.
AI-generated · may contain errors · check the source data tables below
How 1137 S Mason Ave'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 7212 buildings in this neighborhood, 4399 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.
1137 S Mason Ave apartment reviews
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1137 S Mason Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 4 events
Full history back to 2024 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 1137 S Mason Ave 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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