1636 W Ontario St
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.
This building has 2 building violations (7y), above the West Town average of 0.9.
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.
What's in the 1636 W Ontario St report
| Units | 2 |
|---|---|
| Year built | 1879 |
| Stories | — |
| Building area | 1,356 sq ft |
| Property class | 211 |
| PIN (Cook County parcel) | 17072150290000 |
Registered owner per Cook County Assessor records.
Landlord portfolio
Other Chicago properties this owner holds, with a risk rating for each.
Unlock complete reportThis two-unit residential building, located at 1636 W Ontario St in Chicago's West Town neighborhood, was constructed in 1879 and is currently owned by Arturo Sandoval. The property has experienced several notable events over the past few years, with the most significant being two unresolved building code violations that were documented on May 29, 2026, following a complaint-driven inspection. These violations, along with the property's inspection history, suggest potential ongoing maintenance or compliance issues. The building has been the subject of multiple 311 service requests in recent years, including three requests in 2026 alone: two related to unresolved violations and one (from May 28, 2026) specifically for a porch inspection. Other service requests include a closed water lead test kit request in September 2025 and a closed city vehicle sticker violation request in April 2025.
AI-generated · may contain errors · check the source data tables below
How 1636 W Ontario St'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 2271 buildings in this neighborhood, 1136 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.
1636 W Ontario St apartment reviews
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1636 W Ontario St event timeline
Building violations, environmental complaints and enforcement, permits, scofflaw listings, and 311 calls — most recent records in order.
See all 5 events
Full history back to 2007 — violations, complaints, permits, and 311 calls.
Unlock complete timelineFull data for 1636 W Ontario St 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.
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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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Cancel anytime · Data sourced from the City of Chicago Department of Buildings, Chicago 311, Cook County Assessor & the Chicago Data Portal