When you work on it, dust is created, breathed in, and the damage is caused.

From there, it is just a matter of finding something, running the numbers, if it pencils out, hold your breath and jump in :)Forrest Faulconer 

You just analyze properties like breathing air it's almost involuntary.

Relax take a deep breath, maybe a few. 

On acre + lots it sounds like there's breathing room.

Typically, larger apartments and other multi units give a better ROI and have more room to breathe, when it comes to inflation and adjusted value, based relative to income (cap rates, etc).If you want to play it safe, and you don't have a threshold for stress/pain, then play it safe and just keep what you have.

@Jacob Ellsworth Just stop and take a few deep breaths.

Its tough but numbers generally don’t work all that well for myself at first after 2-3 years things settle down and I breath a sigh of relief.  

If they paid utilities directly to the owner, still try to recoup the money, but don't hold your breath.

They just need to buy/find the proper equipment to allow easy breathing in a safely manner.