639 N Hamlin Ave
A handful of records on file over the last seven years, and our model predicts a high 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.
This building has 2 building violations (7y), above the Humboldt Park average of 1.2.
What's in the 639 N Hamlin Ave report
| Units | 2 |
|---|---|
| Year built | 1898 |
| Stories | — |
| Building area | 2,348 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 16111140060000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with a risk rating for each.
Unlock complete reportThe property at 639 N Hamlin Ave in Chicago's Humboldt Park neighborhood is a two-unit, 125-year-old building owned by CID Martinez, representing one of four parcels under their ownership. The building's recent history (from 2017 to present) shows some concerning patterns, particularly in 2025, when there were four separate leak-related service requests within a five-month period (May-July). Additionally, there were two unresolved complaint-driven inspection violations recorded in September 2021 that are still open as of the latest update. The property has generated a total of 15 service requests through 311 in the past seven years, with approximately 20% of these (3 of 15) specifically related to leak issues, and other miscellaneous reports including a stray animal complaint and a tree removal inspection. While the building has only one recorded building permit in the past seven years, it's worth noting that the total number of violations and service requests associated with the owner across all four parcels is significantly higher, with four building violations and 30 service requests logged.
AI-generated · may contain errors · check the source data tables below
How 639 N Hamlin 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.
Out of 6229 buildings in this neighborhood, 6042 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.
violation
likely
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.
639 N Hamlin Ave apartment reviews
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639 N Hamlin Ave event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 7 events
Full history back to 2021 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 639 N Hamlin Ave apartments
Chicago public datasets for this parcel — building violations, permits, 311 calls, environmental complaints and enforcement, scofflaw listings, and vacant building registrations.
What this is
Violations issued by the City of Chicago Department of Buildings against this parcel.
| Violation # | Date | Category | Status | Address |
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What this is
Violations issued for failure to register or maintain a vacant or abandoned building.
| Docket # | Violation # | Issued | Department | Type | Disposition | Total Fines |
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What this is
Building permits issued by the City of Chicago for new construction, alterations, and repairs at this parcel.
| Permit # | Issued | Status | Description |
|---|---|---|---|
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What this is
Chicago 311 service requests recorded at this parcel — maintenance complaints and quality-of-life requests.
| SR # | Created | Type | Department | Status |
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What this is
Environmental complaints filed about this property with the City of Chicago.
| Complaint # | Date | Type | Inspector | Resolution | Resolved |
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What this is
Formal environmental enforcement cases brought against this property.
| Case # | Date | Type | Violation | Disposition | Status | Fine |
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Unlock complete reportHow 639 N Hamlin 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