Networking with other investors and seeking advice from financial advisors can provide valuable insights and help you avoid common pitfalls.Keep an eye on your financial health by maintaining an emergency fund and avoiding over-leveraging.

Currently my husband's parents own the property but need to sell due to declining health. 

That's my mental block.

There is strong data that correlates lead exposure with health problems. 

@Allan Kapoor, when I bought my first property my defining mental moment is when I decided that I didn't care if I lost money!

AND IF SHE DID, I would suggest not to go into REI because that charity mentality will lead you to go BK.

Zoning make sure its zoned  then health department for waste disposal.

He then drew up a site plan, the county health department perc'ed it themselves, and now we're just kind of waiting for me to get the financing the finish the job here.

I recommend this option, as just sitting on the property with no income is a drain on you both financially and mentally. 

She is actually okay for the past few years until she saw that I have totally rehabbed one unit when tenant moved out and I guess she feel jealous and have since demanded a lot of repair/upgrade and started making a lot of accuse saying mold issue causing health issues but at the mean time trash my yard and keep the common area dirty.