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All 311 request types / Chicago 311

Building Violation

How to report it, who handles it, and how often Chicagoans actually file it — from the city's 311 Service Requests dataset. These requests are handled by DOB - Buildings.

139,807

Requests all time

Excludes records the city flagged as duplicates

2,228

Filed in the last 30 days

down 4% vs the previous 30 days

3,762

Currently open

Status has not been set to Completed or Canceled

136,040

Completed all time

97% of all requests

Requests filed, last 12 months

Monthly totals, Sep 2025 – Aug 2026. Peak: 2,360.

How to report this

  • Online at 311.chicago.gov
  • By calling 311 (or 312-744-5000 from outside Chicago)
  • Through the CHI311 mobile app

Whichever way you file, you get a service request number you can use to check status — and the request becomes a public record. That public record is exactly what this page is showing you.

Wards filing the most

  1. Ward 66,295
  2. Ward 75,919
  3. Ward 165,100
  4. Ward 85,066
  5. Ward 205,046
  6. Ward 54,851
  7. Ward 174,615
  8. Ward 284,536
  9. Ward 244,160
  10. Ward 94,047

Community areas filing the most

  1. South Shore7,694
  2. Austin7,289
  3. Auburn Gresham4,203
  4. Greater Grand Crossing4,093
  5. Chatham3,898
  6. Englewood3,667
  7. West Town3,597
  8. Chicago Lawn3,427
  9. North Lawndale3,362
  10. Humboldt Park3,296

How these requests come in

  1. Phone Call84,892
  2. Internet35,264
  3. Mobile Device10,985
  4. Alderman's Office7,711
  5. spot-open311-CHITEXT356
  6. Salesforce Mobile App168
  7. CSCC119
  8. Open31197

Common questions

How do I file a "Building Violation" request with Chicago 311?
Three ways, all of which create the same public record: online at 311.chicago.gov, by calling 311 from inside the city (or 312-744-5000 from outside it), or through the CHI311 mobile app. Give the exact address or nearest intersection — requests without a usable location are the ones that stall. Requests of this type are routed to DOB - Buildings.
How many "Building Violation" requests does Chicago get?
139,807 have been filed in total, excluding duplicates the city flagged. 2,228 came in over the last 30 days, down 4% versus the previous 30 days.
How long does a "Building Violation" request take to close?
The city does not publish a target response time for this request type, and this page does not estimate one. What the data does show: 97% of all "Building Violation" requests are marked Completed and 3% are still Open. The rest were canceled — usually duplicates or requests that turned out to be someone else's jurisdiction.
Is my 311 request public?
Yes. Every service request becomes a public record in the city's open data portal, including the type, status, the street address (block level), the ward, and the dates it was opened and closed. That is exactly what this page is built from. Your name and phone number are not published.

Go deeper

Related

Aircraft Noise ComplaintGraffiti Removal RequestPothole in Street ComplaintStreet Light Out ComplaintGarbage Cart MaintenanceRodent Baiting/Rat ComplaintAll 77 neighborhoodsCommunity area profilesAll 50 wardsAldermen and ward statsAnswersCommon questions about Chicago

Source

Counts exclude records the city flagged as duplicates. Figures are recomputed from the source data at least hourly.