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8411 W Bryn Mawr Ave 1Stfl

O'Hare, Chicago IL 60631 12111110290000 6 units · 1973

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

Building Violations (7y) vs. neighborhood
Compared to a typical building in O'Hare
At or below average
avg 0.3
0
FewerMore

This building has 0 building violations (7y), at or below the O'Hare average of 0.3.

Building characteristics
Units6
Year built1973
Stories
Building area6,351 sq ft
Property class211
PIN (Cook County parcel)12111110290000
Ownership

Registered owner per Cook County Assessor records.

Owner name
Spero Margaris
Mailing address
116 N Aldine Ave

Landlord portfolio

Other Chicago properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The six-unit residential building located at 8411 W Bryn Mawr Ave in the O'Hare neighborhood was constructed in 1973 and is currently owned by Spero Margaris. The property has experienced relatively minimal service requests over the past seven years, with a total of 11 requests specifically related to the building itself, compared to 22 requests associated with all three parcels owned by Margaris. The building's documented service requests show the majority of recent issues have been related to traffic and street infrastructure, rather than the building's internal conditions or systems. In 2026 alone, there have been multiple reports of traffic signal problems, with two open complaints and one closed complaint, as well as a street light pole damage report that has since been resolved. Prior to this, in 2025, there were two infrastructure-related requests that were addressed: one for sign repair and another for tree trimming, though it's worth noting that tree trim requests are no longer being accepted. The building's service request history suggests that while there have been various maintenance and infrastructure issues in the vicinity of the property, there are no recent records of internal building complaints that would indicate significant resident experience or safety concerns.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 8411 W Bryn Mawr Ave 1Stfl'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.

Neighborhood percentile
19thpercentile

Out of 439 buildings in this neighborhood, 356 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
70%
No code
violation
30%
Code violation
likely
Model explanation

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.

Building size

Total building square footage is a proxy for property scale and management complexity.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Number of rooms

Total room count is a proxy for property scale.

12-Month severity forecast
No violation 65.4%
Moderate concern 31.4%
Severe concern 3.1%
Estimated probability of a code violation in the next 12 months at each severity level.
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The story over time

8411 W Bryn Mawr Ave 1Stfl event timeline

Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.

2026
311 Request May 27
Traffic Signal Out Complaint
CDOT - Department of Transportation
311 RequestApr 12
Street Light Pole Damage Complaint

See all 5 events

Full history back to 2025 — violations, complaints, permits, and 311 calls.

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Every record we have

Full data for 8411 W Bryn Mawr Ave 1Stfl apartments

Chicago public datasets for this parcel — building violations, permits, 311 calls, environmental complaints and enforcement, scofflaw listings, and vacant building registrations.

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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

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