talk to the dept of health first (records requirements etc), establish what upgrades/maintenance required, line up a reliable repair/handyman/type person, consult lawyer, and then make your offer, see if you can buy the land it's on via lot line adjustment (ideal scenario). a lot to be aware of, such as system upgrades or county code changes bringing in the requirement to add metered connections to an older small system, for just one example.Otherwise- owner doesn't want to manage, I doubt you really do either but could be wrong. 

Banks are requiring I own the business for 90 days before getting a business loan.

I want to use the equity from the house to buy more real estate, but most lenders require my name to be on the title to prove ownership.

You can do a mod less expensively and it's a better home. 

So, yes, each new offering is an opportunity to move to 506(c), but for these established groups with established networks that are limited by good deal flow versus capital availability there is no need to change the process and compliance requirements needed with a 506(c) offering, since the entirety of their marketing and raise will be limited to existing investors and/or referrals.Again, for OPs purpose, it doesn't make finding them easier, admittedly, but to imply that 506(c) equates to better operators is not true in my experience.

What are the income and expenses of the property?

Landlords can conduct credit and background checks and have applicants submit  pay stubs and any other qualifications they may require of any applicant. 

I own a small cleaning company, plus we do small make-readys.The below is going from cheapest to most expensive.

Relevant info: they were a little difficult with any contractors not allowing entry or requiring specific scheduling beyond my several day notice.

Flexibility with your rental requirements can go a long way.