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3733 N Nora Ave

Dunning, Chicago IL 60634 13191220400000 2 units · 1947

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems 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.

Building Violations (7y) vs. neighborhood
Records already on file, against a typical building in Dunning — not a forecast
Above average
avg 0.8
2
FewerMore

This building has 2 building violations (7y), above the Dunning average of 0.8.

The bar and the rating point different ways because they measure different things: the bar counts building violations already on file, the rating forecasts the next 12 months.

Building characteristics
Units2
Year built1947
Stories
Building area2,304 sq ft
Property class211
PIN (Cook County parcel)13191220400000
Ownership

Registered owner per Cook County Assessor records.

Mailing address
3733 N Nora Ave

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 3733 N Nora Ave in Chicago's Dunning neighborhood was constructed in 1947 and is currently owned by Rudolph S Mastalerz. The property has experienced some recurring maintenance and compliance issues in recent years, with two unresolved building code violations from 2019 and 2023, both stemming from complaint-driven inspections. The building's service request history over the past seven years shows eight documented incidents, including the most recent open request for tree removal inspection from April 2026 and a leak inspection request from March 2026 that has since been closed. The property has also faced various municipal service concerns, including alley pothole issues and tree trimming needs in 2025, as well as a building permit and construction violation reported in September 2024, which was subsequently closed. While the building's age and service request history suggest ongoing maintenance needs, it is worth noting that the majority of these past issues, including the tree trimming and pothole complaints, have been addressed and closed through appropriate city services.

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

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Risk rating

How 3733 N Nora 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.

Neighborhood percentile
62ndpercentile

Out of 1070 buildings in this neighborhood, 407 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
73%
No code
violation
27%
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.

Code violations (past 7 years)

City of Chicago Department of Buildings violations issued at this address over the last 7 years — a direct record of enforcement activity.

Violation rate, owner's portfolio

Per-property violation rate across the owner's portfolio.

Number of bedrooms

Total bedroom count is a proxy for property scale.

12-Month risk forecast
Low failure risk 27%
Estimated probability of a code violation in the next 12 months.
Apartment reviews

3733 N Nora Ave apartment reviews

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The story over time

3733 N Nora Ave event timeline

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

2026
311 Request Mar 31
Check for Leak
311 City Services

See all 5 events

Full history back to 2019 — violations, complaints, permits, and 311 calls.

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Every record we have

Full data for 3733 N Nora Ave apartments

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

Side by side

How 3733 N Nora 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

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