What kind of helicopter? Weight? There is probably structural damage to the building immediately below the crash site.
I am sorry to hear about the death.
If there were rattling windows all the way down to the 9th floor, there is reason to carry out inspections for safety before reoccupying the building. Buildings sway with strong wind so they are very sturdy. But, this wasn’t wind, but, a crash. It is reasonable to be cautious.
This is very sad. The pilot died. Perhaps he knew his health was in trouble and he did what he could to prevent any deaths of others.
The winds were 11 mph.