That may have health consequences for your residents years down the road(recent research shows.) 

Contact ALL the local media, safety issue, health hazard, poor customer service, undue burden... .get my drift?

The town I invest in has occupancy limits,  meant to maintain the health and safety of the infrastructure.

She just texted me to tell me she got a promotion in another city and needs to move before school starts, this month! 

Everyone we have networked with says we must have skin in the game to do any kind of joint ventures/learn from them or even join a team, which we would love to do, however we basically gave our life savings to a family member to deal with a health battle.

What things should be discussed upfront to promote and protect both parties interests?

Even if you have to sell before the 2-year mark as required by sec 121 rules because of health, work, or some unforeseen circumstances, you might still able to avoid tax.

There is a recovery/behavioral health building down there that seems to be holding the neighborhood back a bit.

I don't yet know about the health of the seller but this could be an interesting exercise even if I don't purchase.

Congratulations on the upcoming baby and hopes to great health.