Tell them to call the police - and not you - if the other tenant is disturbing them. 

The updates could easily exceed the value of the property after your purchase price.He may be buying a property with lead paint, but not a problem unless it is disturbed.

Same thing with the downstairs shower, even though the ORIGINAL sheetrock was not disturbed and we could have perhaps argued that point with the inspector, I'd rather spend about 50 bucks extra and do it the right way.Our preparations paid off and we PASSED our rough inspection!  

Now if you had a month to month tenant who "broke all the rules" (excessive noise/unreasonably disturbing the neighbors etc etc), you are within your rights to mutually resolve this with said abusive tenant using some of the pointers I outlined earlier.  

I read a suggestion on a DIY forum to tape the wall/ceiling joint flat (butt the tape into ceiling instead of overlapping) so you don't have to disturb then try to match the popcorn.

Basically the clause reads as follows:1.DISTURBANCE, SMOKING, NOISE, ILLEGAL USE: Neither the LESSEE nor his family, friends, relatives, invitees, visitors, agents or servants shall make, permit or suffer any disturbing noises or vibrations by means of a human voice, radio, phonograph, stereo, television, piano or other musical instrument or other device or form of technology of any description within the building or Premises, nor commit or permit any nuisance to exist thereon, nor cause damage to the building or Premises, nor create or permit any substantial interference with the rights, comfort, safety or enjoyment of the LESSOR or other occupants of the same or any other apartment in the building, nor make any use whatsoever thereof than as and for a private residence.

I was leaning towards not doing this as I dont want to disturb the tenants more than necessary.

(Is it disturbing how little I know about this stuff?)

Your lease can state that noise should not disturb neighboring tenants, etc."

@James Wise, how come you had your disturbing reply?