Free Chicago apartment background check

4257 N Lockwood Ave In

Portage Park, Chicago IL 60641 13163110010000 6 units · 1917

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. 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 Portage Park — not a forecast
At or below average
avg 0.6
0
FewerMore

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

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
Units6
Year built1917
Stories
Building area7,701 sq ft
Property class211
PIN (Cook County parcel)13163110010000
Ownership

Registered owner per Cook County Assessor records.

Mailing address
4257 N Lockwood

Landlord portfolio

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

Unlock complete report
Augrented Insights
Initial analysis

The six-unit residential building at 4257 N Lockwood Ave in Chicago's Portage Park neighborhood, owned by Raymond C Dahl, is a 1917 property that has generated 13 311 service requests over the past seven years. The most recent activity, as of May 2026, includes an open building violation complaint, which warrants attention as the only currently active issue on record. The property has experienced some external infrastructure challenges, particularly in mid-2025 when three separate pothole complaints were filed within a span of just three days, though all these street-related issues were successfully resolved. A tree emergency was reported and closed in late April 2026, and there was also one information-only call made in April 2026. While the building has had its share of service requests, including various non-building related matters such as street conditions and a tree emergency, the most concerning to residents would be the currently open building violation complaint, representing the only pending issue directly related to the property's condition or safety systems.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 4257 N Lockwood Ave In'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
21stpercentile

Out of 3924 buildings in this neighborhood, 3100 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
61%
No code
violation
39%
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 risk forecast
Moderate failure risk 39%
Estimated probability of a code violation in the next 12 months.
Apartment reviews

4257 N Lockwood Ave In apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives in Portage Park, color-coded by risk level. Click any marker to explore.

The story over time

4257 N Lockwood Ave In event timeline

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

2026
311 Request May 01
Building Violation
311 City Services

See all 2 events

Full history back to 2023 — violations, complaints, permits, and 311 calls.

Unlock complete timeline
Every record we have

Full data for 4257 N Lockwood Ave In 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 N Lockwood Ave In compares to the neighborhood

This building against comparable properties in Portage Park. Toggle filters to narrow the peer group.

Loading comparables…
Still apartment hunting in Chicago?

Look up the next apartment before you sign

Search any Chicago address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all Chicago datasets, full history, landlord portfolio, and PDF & Excel exports.

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them

Cancel anytime · Data sourced from the City of Chicago Department of Buildings, Chicago 311, Cook County Assessor & the Chicago Data Portal

Watch 4257 N Lockwood Ave In
Get alerted the moment a new violation or complaint is filed.