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4257 W 55Th St 1

West Elsdon, Chicago IL 60632 19152020540000 2 units · 1953

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

Building Violations (7y) vs. neighborhood
Records already on file, against a typical building in West Elsdon — not a forecast
At or below average
avg 0.6
0
FewerMore

This building has 0 building violations (7y), at or below the West Elsdon average of 0.6.

Building characteristics
Units2
Year built1953
Stories
Building area2,112 sq ft
Property class211
PIN (Cook County parcel)19152020540000
Ownership

Registered owner per Cook County Assessor records.

Owner name
Mailing address
4257 W 55Th St

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 4257 W 55th Street in Chicago's West Elsdon neighborhood, owned by Serafin Sosa, has been standing since 1953. Over the past seven years, the property has generated 17 service requests through the 311 system, primarily consisting of external maintenance issues. The most recent requests from 2025-2026 have included tree trimming matters (two requests), garbage cart maintenance, an abandoned vehicle complaint, and notably, a vicious animal complaint in July 2025, which raises potential safety concerns for residents. The building's only permit application in the past seven years, while not specified in the records, suggests minimal structural or major maintenance work has been undertaken during this period. The frequency and nature of the service requests indicate that while the building itself may be relatively stable, there have been ongoing challenges with the immediate neighborhood environment, particularly regarding street maintenance and local wildlife or animal control issues.

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

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Risk rating

How 4257 W 55Th St 1'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
54thpercentile

Out of 446 buildings in this neighborhood, 205 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
72%
No code
violation
28%
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.

Location

Precise location is a proxy for area-level risk — some Chicago zip codes have systematically higher code-enforcement activity.

Construction permits (past 7 years)

Number of permits pulled at this address — construction or renovation activity over 7 years.

Lot size

Total lot square footage is a proxy for property scale.

12-Month risk forecast
Low failure risk 28%
Estimated probability of a code violation in the next 12 months.
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On the map

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The story over time

4257 W 55Th St 1 event timeline

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

2022
311 Request Sep 28
Rodent Baiting/Rat Complaint
311 RequestAug 02
Rodent Baiting/Rat Complaint

See all 2 events

Full history back to 2022 — violations, complaints, permits, and 311 calls.

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Every record we have

Full data for 4257 W 55Th St 1 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 4257 W 55Th St 1 compares to the neighborhood

This building against comparable properties in West Elsdon. Toggle filters to narrow the peer group.

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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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