Inspection before renting

[Mary Witt]

I've lived in my condo for four years and want to rent it out as an investment property. Last year, there was a leak from upstairs, and the maintenance guy opened a hole in my drywall to investigate. He removed wet insulation and a concrete-like chunk that felt sandy at the edge, possibly mortar. He said that chunk was already loose so he took it out.  I am not sure if the concrete/mortar piece could indicate any structure issue or I am completely over thinking.... To have peace of mind before renting it out, is there a third-party inspection service that can check the unit's structural safety and other aspects to protect myself and future tenants?"