1337 N Mason Ave
This building has more problems than most buildings in this neighborhood. 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 1337 N Mason Ave report
| Units | 2 |
|---|---|
| Year built | 1916 |
| Stories | — |
| Building area | 2,025 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 16052170070000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with risk grades for each.
Unlock complete reportThe property at 1337 N Mason Avenue is a two-unit residential building located in Chicago's Austin neighborhood. Owned by B J Gonzalez, this century-old structure built in 1916 has generated a moderate volume of service requests over the past seven years, with a total of 22 documented cases. Most notably in 2026, the building has experienced multiple infrastructure-related issues, with three open complaints in June 2026 concerning tree removal inspection and alley potholes, following an April 2026 alley pothole complaint. The property has also encountered service disruptions, evidenced by two missed garbage pick-up complaints recorded in March 2026, though these have since been closed. Looking further back into 2025, there was one alley pothole complaint that reached resolution. Throughout this seven-year period, only one building permit has been recorded for the property, and the relatively high number of 311 service requests in recent months suggests ongoing attention to basic infrastructure and service maintenance issues in the immediate vicinity of the building.
AI-generated · may contain errors · check the source data tables below
How 1337 N 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, 5481 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.
1337 N Mason Ave apartment reviews
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1337 N Mason Ave 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 2026 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 1337 N 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.
| 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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Cancel anytime · Data sourced from the City of Chicago Department of Buildings, Chicago 311, Cook County Assessor & the Chicago Data Portal