there are streets, neighborhoods with 100 year old houses in complete ruins.  

Im a landlord in NJ and what Murphy has done during this crisis has ruined the appeal for me. 

If you go after them for this you’re just ruining your name.

Maybe the next tenant has a dog or kids and they don't want to risk ruining your new carpet?

What if you have a nicely rehabbed house and turn the water on and there is 3 or 4 leaks that spring up which completely ruin the work you have done?

My husband is a cancer survivor and he preferred to use something called Orange Guard as he thought it was safer.  

Sounds like a good way to ruin a perfectly good business.

Abatement in and of itself may not be helpful or necessary, but an abatement company will certainly not tell you that ... they'll try to make it could like you'll get cancer just from standing in there.And if you're buying a 4-plex, and you plan on holding it for a while, it may not be as problematic as you think.

The sapling under the window needs to go as well; it will eventually ruin the foundation being so close to the house.  

Maybe one competent inspector would notice this, while another competent inspector won't.My point is that there are MANY intervening factors that are hard to predict that come into play and from there, its up to how you (or whoever you have handling this stuff) handles these issues that can determine the difference between major success and ruin.