2150 N Mason Ave
A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.
This building has 1 building violations (7y), above the Belmont Cragin average of 0.9.
What's in the 2150 N Mason Ave report
| Units | 2 |
|---|---|
| Year built | 1924 |
| Stories | — |
| Building area | 1,915 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 13322190390000 |
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 2150 N Mason Ave in the Belmont Cragin neighborhood, owned by Alexis Delgado, has been standing since 1924 and has experienced several notable incidents over recent years. The building currently has one open building code violation as of December 24, 2025, resulting from a complaint-driven inspection, and had one additional building violation related to construction and permit issues in April 2024, which was subsequently closed. The property has generated a total of six 311 service requests over the past seven years, with the most recent being a tree debris clean-up request from June 2026 that remains unresolved. Other service requests include a city vehicle sticker violation (October 2025, closed), a building violation (August 2025, closed), and various infrastructure-related issues including a tree emergency (July 2024, closed) and a pothole complaint (May 2024, closed). The frequency of service requests and the presence of both building code and construction-related violations suggest some ongoing maintenance and compliance challenges, though many issues have been addressed through the 311 system.
AI-generated · may contain errors · check the source data tables below
How 2150 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
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.
Out of 4453 buildings in this neighborhood, 3384 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.
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.
2150 N Mason Ave apartment reviews
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2150 N Mason Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 3 events
Full history back to 2024 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 2150 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.
| Violation # | Date | Category | Status | Address |
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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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Unlock complete reportHow 2150 N Mason Ave compares to the neighborhood
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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