Last week I used the Chicago data portal to investigate the most common building safety code violations in Chicago and discovered that the frequency of violations is dictated not by the real distribution of problems throughout buildings, but instead by the ability or inability of the city inspectors to observe the state of individual properties. Of the 10 most common overall violations, 8 of them can be observed without entering the building at all, one could be observed by entering publicly accessible areas, leaving only one - the absence of smoke detectors - to require access behind closed doors. Even that one lone interior violation can technically be observed by an inspector without permission to enter the property if they give a good hard look through the windows.
But what if the inspectors have someone on the inside to open the door? This near unanimity of exterior violations led me to wonder what the most common interior violations are, so today I'm going back to the data portal to find out. Continue reading Behind Closed Doors: The Other Most Common Building Violations in Chicago