Even before the construction boom reached its current frenzied pitch, L&I struggled to stay on top of violations at the city’s construction sites. Things have only gotten worse in recent years, as more inexperienced contractors and developers try to cash in on Philadelphia’s thriving real estate market. So far this year, six occupied homes have been undermined to the point of collapse, up from two in all of 2018. Every few days there is another allegation of subpar or dangerous construction on the Facebook page set up by Whitaker’s coalition.