This Wikipedia page gives different wall types and how well they block sound.  

Well I may not be the most seasoned in the world but my wife and I have established processes that work for us. 

If I am hell bent on renting by the room (I don't think that is a good LONG-TERM strategy, will elaborate later), I can do that on both sides of my duplex as well.  

@V.G Jason Well that was a lackluster response.  

We stick to high quality neighborhoods and homes and are doing really well with it.

I invest here as well.

Yes trying to find info as well, offered 1031 and/or straight investment $s w 6 month min lockup period for a return in the 14s, seems too good(i know what they say, lol)

I did hundreds of them .. then the crash happened and well things in the BRRR world stalled and then of course the new buy and BP coined the term like it was something new.. but its old old school for sure. 

So you can see why mentioning that solar benefits from tax credits without including the fact that every other form of energy does as well comes across as remiss to anyone who knows a little bit about energy. 

Other lease provisions may apply as well, such as prohibition against causing the LL to incur fines and damages.