Then I just made a grunt noise and the phone was silent for about 5 seconds.

Typically the tree is cut by the company and the stump grinding is subbed out.

A word about fire pits and noise. 

Any suggestions on things I can do to reduce the noise between preexisting duct work?

How did you deal with small issues, such as trash, too many guests,noise etc.?  

The other think is look up condo association rules, if the condo can take action against you for unruly pets (waste, noise etc) transfer the responsibility for that to the tenants.

It is different if the activity results in loud offensive noise or damage to your property, but that does not appear to be the case. 

Worst can scenario if the tile is perfectly adhered to the subfloor, cut through grout and first layer of sub-floor/cemet board, grind off whatever is stuck to the tile with an angle grinder and reuse. 

One high up on a wood power/ cable pole, and one on a downspout, both of which would be very difficult to remove with someone making a bunch of noise & a scene with an extension ladder.  

But if its a 3 flat  or triplex, then you'll have to deal with the noise issue.