(For the time being, lets ignore the opportunity cost of burying 8-10K for purchasing the discount during refi instead of investing elsewhere.

You think back and realize that the illegal ferrets look good now.They don't know that you know and you ignore it and pretend you don't know anything about the pets.You could say you know about the ferrets and you are disappointing they didn't tell you about them, but you are willing to waive this one lease violation provided that the ferrets don't cause any issues.I think the ferrets will cause less trouble than dogs or cats so I would try and work out something or ignore it to keep an otherwise good tenant.

I see you’ve ignored my comments...

I think that most of us who collect W9s probably ignore section 3 but it's quite important.

If I am wrong about that, then correct me and ignore much of what I posted above;) 

in ignoring the warning but lesson learned.Second reporting your neighbour out of spite was a petty thing to do.

@Tim Joyce - from what I've heard from everyone it seems that the due on sale clause is 99.99% ignored when transferring into an LLC by most banks because its not a true sale (and only done for the purpose of asset protection as you mentioned) but I'm worried that having an additional owner in the LLC not on the financing may cause a bit more of an issue. 

Pardon my ignorance if I ask anything stupid.

I would do that if you are doing any work which requires them, plus the building inspector will let you know what how to proceed with that addition. unless it was shoddy construction there's a good likelihood that they will go easy on you because you aren't the one who built it. they could require it to be brought up to code but it's an investment because it will hurt the appraisal and potentially scare off buyers in the future. just be real nice and ignorant when you speak with the building inspector. they see lots of this and many times depending on ones attitude they can be a pain or pretty nice.

I don't get too caught up in national market forces as they are highly unpredictable but there seems to be one undeniable trend that is hard to ignore and that is the continued and growing lack of supply of affordable housing.