Thanks for taking the time to introduce yourself 'formally'. 

You could make a formal complaint to the real estate commission. 

If they choose an option, draft a formal PSA or option and go under contract!

Although we have a good business relationship, I want to protect myself and make it formal by creating an agreement so that the terms are clear.

However, those that I've attended mostly require formal identification.

For example, I help people get turnkeys all the time and I'm a licensed real estate agent, but I don't put myself formally on the paperwork as the buyer's agent.

If they have established residency in the home, which clearly they have, you’ll need to go through the formal eviction process.

@Daniel Brown Yes, some banks will HELOC based on your tax assessment after the house has been “seasoned” lived in for 1+ year.While this would save you the $500 appraisal fee, it likely won’t benefit you in this case.You want a formal walkthrough / appraisal.

I have been a part of BP for awhile now and although I have met a handful of you, I have not made a formal introduction to the MHP owners, sponsors/syndicators, and fans of mobile home parks here on the platform. 

Did you formally interview your agent, if so what questions did you ask?