You may find he never signed the leases and they are not legally binding.

That being said, I believe a CITY is allowed to require a separate meter be installed, as I have read for the City of Oakland (link below).It appears that the Southern California utility is requiring separate meters for all ADUs (link below) though again I don't see how that is legal.

I'm local to the area and am aware of the legality as it differs from town to town.

While the main syndication process may be identical, there will be legal nuances that are country specific. 

This will help to minimize legal liability and any concerns that could arise regarding employee theft (We plan to retroactively count the RV rooftops present at noon each recorded day (every 30 days), and compare it to the park management software/bank statements as a system of checks and balances.

How much in legal fees to prepare for?

However, I'm not a licensed real estate broker, which means I can't legally hold funds in the state. 

There's a Facebook group I'm on called STR Legal Barriers & Action where people will have other recommendations for you. 

There are legal implications to being willfully deceptive to obtain a financial benefit for yourself. 

Increase in family size:A Borrower may be eligible for another house with an FHA-insured Mortgage if the Borrower provides satisfactory evidence that: • the Borrower has had an increase in legal dependents and the Property now fails to meet family needs; and • the Loan-to-Value (LTV) ratio on the current Principal Residence is equal to or less than 75% or is paid down to that amount, based on the outstanding Mortgage balance and a current residential appraisal.