A building-code violation is the City of Chicago telling a property owner that something does not meet the municipal code and must be fixed. The City’s Department of Buildings issues them after an inspection — triggered by a complaint (often a 311 call), a permit inspection, or a periodic sweep. Every violation is public, logged against the property, and searchable by address.
The violation lifecycle
A violation is not a one-time event; it moves through states. It starts when an inspector writes it up. It sits OPEN until the owner corrects it and a re-inspection confirms the fix, at which point it becomes COMPLIED. Along the way it can be routed to an administrative hearing if the owner does not respond, where the City can levy fines — or, in serious cases, to housing court. So the useful question about an address is not just “are there violations” but “how many are still OPEN, and how old are they.”
One recently-complied violation on a century-old three-flat is noise — nearly every older building has been written up for something. A stack of OPEN violations that have sat for years is signal: it usually means a landlord who is not maintaining the building, or a property in distress.
What violations actually cover
The code is broad. Common violations include failing porches and rear stairs (a Chicago perennial after the 2003 porch collapse tightened the rules), missing or dead smoke and carbon-monoxide detectors, no heat during the covered season, broken windows and doors, rodent conditions, illegal conversions (a basement or attic turned into a unit without permits), and structural problems. Each violation code maps to a specific municipal-code section, so a violation record is also a to-do list.
How to look one up
Search the address above and Civic Worth resolves it to its Cook County parcel, whose page shows the code-violation history alongside permits and 311 — so you can read the violations next to the work that was (or was not) permitted to fix them. To compare neighborhoods rather than a single address, the code-violations map rolls the data up by community area. And because most violations begin as a 311 complaint, the two records read together tell you what a block is worried about.
Source: City of Chicago building-violations open data (public records), resolved to the parcel and stamped with the inspection dates the City publishes. Confirm the current status with the Department of Buildings before relying on it.