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3733 N Christiana Ave

Irving Park, Chicago IL 60618 13232230100000 2 units · 1921

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.

Building Violations (7y) vs. neighborhood
Compared to a typical building in Irving Park
At or below average
avg 0.9
0
FewerMore

This building has 0 building violations (7y), at or below the Irving Park average of 0.9.

Building characteristics
Units2
Year built1921
Stories
Building area2,000 sq ft
Property class211
PIN (Cook County parcel)13232230100000
Ownership

Registered owner per Cook County Assessor records.

Owner name
Marc J Ostrof
Mailing address
Po Box 578099

Landlord portfolio

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

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Augrented Insights
AI summary

The two-flat residential building at 3733 N Christiana Ave in Chicago's Irving Park neighborhood, owned by Marc J Ostrof, is a 1921 structure currently containing two units. The property has maintained a relatively low volume of service requests over the past seven years, with only two 311 requests recorded for the current and previous years. Both of these requests were related to tree maintenance and planting in proximity to the property, with the most recent being a tree planting request initiated in May 2026 that remains open, while an earlier tree trimming request from April 2024 has been closed. The building's documented service history shows minimal immediate concerns regarding the property itself, with no recorded complaints or service requests directly related to the building's condition, maintenance, or resident services.

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Risk rating

How 3733 N Christiana 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.

Neighborhood percentile
59thpercentile

Out of 3714 buildings in this neighborhood, 1523 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
76%
No code
violation
24%
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.

Owner's portfolio size

The number of parcels this owner is registered on — larger portfolios can mean more management complexity.

Number of bedrooms

Total bedroom count is a proxy for property scale.

311 call rate, owner's portfolio

Per-property 311 call rate across the owner's portfolio.

12-Month severity forecast
No violation 69.3%
Moderate concern 24.0%
Severe concern 6.7%
Estimated probability of a code violation in the next 12 months at each severity level.
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The story over time

3733 N Christiana Ave event timeline

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

2026
311 Request May 21
Tree Planting Request

See all 2 events

Full history back to 2024 — violations, complaints, permits, and 311 calls.

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Every record we have

Full data for 3733 N Christiana Ave 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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