All conventional home loans must abide by Fannie Mae/Freddie Mac regulations.

California is the most litigious, regulated corner of the world and navigating the law isn't easy.

As an experienced investor having access to cash with minimal restraints, regulations, complicated rulesets, and fees is very important IMO.  

What are some things to keep in mind, how does one do a background check, what are the laws regarding that (I'm in St Louis), any advice, thoughts recommendations etc is greatly appreciated.Thank you Since there are different regulations in states and counties regarding background checks I recommend you advertise your property via apartment.com. 

They can offer insights into vacancy rates, demand, and any local regulations you need to be aware of.

Can anyone confirm that or not, as to current regulations?

Understanding the local market, construction costs and legal regulations will be crucial to your success.

Ideally, I'd like to run a strictly mid-term rental operation, though I'm open to short-term if it make sense given the regulations here.

Hello, I’m pretty familiar with the tax liens regulations here in Alabama but I wanted to brush up on quieting the title.

It is not regulated compared to your traditional conventional /FHA loans.