She has 3 dogs which can complicate things and doesn't have much money and is in poor health.  I

But the IRS has demonstrated a healthy bit of skepticism about investment intent without income when there is significant personal use.It is all going to come down to your intent however on both sale and purchase. 

After years of attempting to work with the county the neighborhood she was in was being demolished due to toxic substances in the soil from a nearby recycling business. 

Do you have large trees around the house that could be in the way of direct sunlight to dry the wood/soil/etc?

People rent instead.iBuyers have been a trend for several years now and I believe it has it's place, but will not grow beyond a small share - Zillow just killed the program with massive losses and laid off 25% of their employees.For 2022 it looks like the market will become more healthy; the rate of appreciation should slow down, but we do expect prices to go up.

It seems that health risks are slightly less concerning to the overall-healthy individual, but what about the more vulnerable populations (immunocompromised, children, pregnant, elderly, etc), and those who are renting a home for longer term?

For me personally, I believe in carrying as much healthy debt as possible.

We're having a soil sample test done next week. 

There are a few national companies (the names escape me) however they can be quite pricey if you don't have healthy lot rents. 

I pay a healthy referral for these seller leads because he's put so much into getting to that meeting, he's already set a baseline with his aggressive offer and a timeline that it can take a few months to sell a distressed house for top dollar.