What a permit inspection record proves
A permit inspection is an inspection the Department of Buildings performs against an issued permit — a rough inspection while the work is open, a final inspection when it is finished. The record of one proves that a City inspector attended on a stated date and recorded a result for that stage. It proves nothing whatever about the stages that have no record, and in Chicago most stages have none.
That is the whole difficulty with this record, and it is a difficulty of absence rather than of error. The inspections that happened are described accurately. The ones that did not happen look exactly like the ones that happened and were never published — and the City of Chicago, uniquely among the records on this site, does not publish an inspections dataset at all.
So the question a reader should ask of a permit inspection history is not whether the entries are true. It is whether the sequence is complete, and what the record does to signal that it is not. The answer to the second question is: almost nothing.
The City does not initiate the inspection
This is the single most important documented fact about the record, and every other finding follows from it. Chicago does not send an inspector because a permit was issued. The permit holder has to ask.
Section 14A-5-502.3 of the Municipal Code, quoted by the City's auditors, puts it directly: the permit holder must notify the building official when work done pursuant to a permit is ready for inspection. The Inspector General's finding on the operation of that rule is blunter still — the Department does not initiate an inspection unless it receives a request from a permit holder or a complaint, and its system does not flag general contractors that fail to request one.
Three related provisions sit around it in Title 14A, the administrative provisions of the Chicago Construction Codes. Section 14A-1-104.7 makes the building official responsible for making or overseeing the inspections the codes require, and allows certain mandated inspections to be accepted in place of the official's own. Section 14A-4-401.5 requires the permit to stay posted until the work is completed and inspected. Section 14A-3-304.1 makes failure to schedule a required rough or final inspection grounds for suspension of permit privileges.
The obligation is therefore real and the sanction exists. What does not exist is any mechanism that produces an inspection when nobody asks for one.
The number this site is built on
On August 25, 2022 the City of Chicago Office of Inspector General published its Audit of the Department of Buildings' Permit Inspections Process. The office summarized its own finding as a conclusion that the Department's process for inspecting construction work allows some permit holders to construct and occupy uninspected buildings.
The audit examined 146,323 building permits issued between January 1, 2017 and December 31, 2019, of which 125,844 were in scope, and matched them against 249,700 inspection requests. The comparison that matters is between two classes of permit:
- Permits requiring a certificate of occupancy — 1,236 unique permits. The Department completed 98.9 percent of required inspections, and 97.2 percent received passing marks.
- New construction permits generally — 5,351 of them, most requiring no certificate. As of April 27, 2021, 16.7 percent had all related inspections completed.
Two systems, one department, the same inspectors. The difference between them is whether anything forces the permit holder to make the call. Single-family homes and two- or three-flats do not require a certificate of occupancy, which is the structural reason the rates diverge rather than an observation about who builds what.
The audit also examined a targeted sample of 80 new construction permits. The Inspector General states that this was not a statistical sample and cannot be extrapolated, and that qualification travels with every figure drawn from it. Within the sample, 42 buildings were fully constructed — including 35 single-family homes, several of them already sold or listed for sale — and of the 398 required inspections across those 42 buildings, the Department completed 198. Eleven of the 398 received passing marks. See the audit itself, pages 9 to 10 and 15 to 16.
And the City checked again in 2024
Audits age, and an eight-year-old finding invites the reasonable objection that things have moved on. In this case the City answered the objection itself.
On June 5, 2024 the Office of Inspector General published its Follow-up to the Audit of the Department of Buildings' Permit Inspections Process. Its conclusion was that the Department had not implemented corrective actions in response to the audit's findings.
That is what makes the 2022 comparison usable as a current statement about the record rather than a historical one. The watchdog measured a gap, recommended a remedy, returned two years later, and reported that the remedy had not been put in place. A reader looking at a Chicago permit inspection history in the present day is looking at a record produced by the system the 2024 follow-up describes.
The Department's response to the original audit did describe one change: a daily email listing permits more than six months old with no inspection requests, with a plan to assign those locations to inspectors. It described no specific steps to improve data quality, and the audit notes that the Department has been working to replace its data system for over a decade.
The permit record is not a completeness signal
A reader who cannot see the inspections directly will reach for permit status instead. The audit closes that route too. As of the dates the report gives for each figure:
- 82.6 percent of permits remained open as of December 2020;
- 72.5 percent of permits had no associated inspection requests at all;
- 65.6 percent of permits with required inspections do not appear to have received complete inspections;
- the Department scheduled inspections for 91.5 percent of the 155,756 construction inspection requests it received between 2017 and 2019.
That last figure is the one people miss. When somebody asks, the Department largely turns up. The failure is in the asking.
Underneath those numbers the auditors recorded a set of data-quality findings that disqualify permit status as evidence in either direction. The Department does not consistently close permits after required inspections are completed. Different divisions use the closed status differently. Electrical permits for maintenance work, which require no inspection, are generally not closed or deleted, and the system does not distinguish them from construction electrical permits. Inspections incorrectly assigned during plan review are not regularly closed or deleted. And the Department's system cannot identify all uncompleted required inspections.
One caution belongs with these figures. The audit gives a data review date of November 13, 2020 in its methodology and cites the open-permit figures as of December 2020. The two dates are inconsistent within the report, so each figure should be attributed to the date the report gives it, as it is above.
Why you cannot look this up
Chicago publishes permits and it publishes violations. It does not publish inspections. A catalog search of the City's data portal returns no standalone Department of Buildings inspections dataset — the inspection-related fields that do reach the public data are embedded in the Building Violations dataset, and they exist only because an inspection produced a violation.
The consequence is the inverse of what a reader expects. A passed inspection generally produces no public record. Chicago's building inspection history is visible chiefly through its failures. The auditors themselves had to obtain 249,700 inspection requests from the Department directly, because the portal could not supply them.
So the realistic reading of a permit inspection history is narrower than it looks. Entries present are evidence of attendance on a date. Entries absent are ambiguous between an inspection that did not happen, an inspection that happened and was recorded in a system the public cannot see, and a permit class that required no inspection in the first place. A permit history that ends at rough carpentry is consistent with a finished, uninspected building — which, in the only sample the City has published, was the most common outcome. The related Title 14A administrative provisions set out what should have happened; they do not record what did.