Tracking Down a Banging Sound (Pipes?)

[Brandon Seyferth]

Hi All,

Hoping for advice here. I manage a six unit building with a commercial space on the first floor in Chicago (I own only one of the condos, but I manage the building). The commercial space is not part of the HOA.

Recently, the units directly above the commercial space as well as the commercial space have heard a loud banging which they believe might be the pipes. As I understand it, the HOA would be responsible to repair this issue. How might you begin to track down the problem? Hire a plumber to come out and make sure they have access to multiple units to track down the problem? Might be an obvious answer, but I'd be grateful for any thoughts.

Thank you!

Brandon