Heavy Bag in half duplex

[Shelley Peever]

Hello everyone - I have new tenants on one side of a duplex - so a side by side duplex. These tenants reported the wood porch floor being damaged, and since it is old, I replaced it with brand new boards.  I drove by the other day and saw a heavy bag, punching bag on the same porch. I can't tell yet if it is free standing or not, will find out today, but either way could be an issue.  Does anyone have some feedback in this case? I am concerned about damage and noise of course thank you.