As a result, I’m uncertain if any of the properties have illegal additions or modifications.

So with I decided to ask the seller(lender) for a loan modification. 

Suzette,Stay away from any company that offers you a Loan modification or a foreclosure "Audit" and what ever new name they call it now a days.

Your best bet is to ensure that there are no material modifications that would in any way harm or even moderately delay the ability to rent it out and qualify as a normal SFR (one lease, one family) or sell on the market to an owner-occupant

They are not allowed to do any repairs or modifications, none, without written consent.

If you want to see the original booking length, you might need to look for a column like "nights_booked" (if it's included) or calculate it by combining "nights" and "m_nights_altered" values to get the initial booking duration.This setup allows you to track changes in bookings over time, which can be especially useful for analyzing trends in stay modifications.

I started with an existing plan from a builder then hired the draftsman to make requested modifications. 

If the seller agrees to the contract modification, you can close the inspection contingency.

Reaching out to all you note/CFD veterans again.It's my understanding that in certain states, for delinquent/non-performing CFD's, you must go through a standard foreclosure process (once all other methods like forbearance and modification have been exhausted).

Also, if there is not HOA in the community, am I allowed to make modifications on the house in the process of changing it to multi-family?