You've spotted something wrong — construction with no permit, a building shedding bricks, a rental that shouldn't exist. Philadelphia gives you two front doors: 311 and L&I. Here's which one to use, what each actually does, and how to follow what happens after you file.
311 is the city's general intake — it takes non-emergency reports of nearly anything and routes them to the department responsible. L&I (the Department of Licenses & Inspections) is that responsible department for buildings: permits, construction safety, licensing, zoning, and property maintenance. For building problems, a 311 report ends up at L&I anyway — so use whichever is easier, and save your energy for describing the problem well. For anything that looks like an immediate danger to people, skip both and treat it as an emergency.
Quality-of-life issues that aren't about a building's construction or licensing — trash, abandoned autos, graffiti — are classic 311 territory routed to other departments.
Whichever door you use, the same three things make a report actionable: the exact address, a specific description of what you observed (what work, what condition, which part of the building), and dates — when it started, when you saw it. Photos help. Vague reports are easy to close; specific ones are easy to inspect.
A report isn't a confrontation — it's how a private worry becomes a public record the city has to act on. What becomes public is the record about the property, not an accusation from you.
This is the step most people skip, and it's where the public record earns its keep. Your 311 request is logged publicly. If L&I inspects and finds a problem, the violation posts to the property's record. If it escalates, enforcement actions follow. All of it is tied to the address — which means you can check back, or better, stop checking entirely: BlockWatcher watches the address or the whole block and emails you when new violations, permits, or 311 activity post. Filing the report is step one; seeing whether anything changed is what accountability actually looks like. That's the idea behind why every block needs a watcher.
Either works for building issues — 311 routes them to L&I. Use whichever is easier and be specific. Immediate dangers to people are emergencies, not reports.
Unpermitted or unsafe construction, dangerous buildings, unlicensed contractors and rentals, illegal conversions, and property-maintenance violations.
It's logged as a public service request and routed to the responsible department. The request — and any resulting violation — becomes a public record tied to the address, so the outcome is checkable.
What becomes public is the record about the property, not a public accusation from you. Reporting is how a concern becomes an official record the city has to act on.