There are benefits and drawbacks to each, and it will depend on your individual situation which is better.

Are you referring to individual mobile homes or parks?

Our original plan was to clear, and create a gated community and sell the lots individually.

Or can individual contractors get licensed to do those inspections?

The county website is just the record keeper but the decisions and rezoning are done by each city individually.  

I've been looking into maximizing performance and one scenario is the idea of building or acquiring a quadplex to take advantage of lower down payments / lower interest rates of a residential mortgage but then layering this with a max value rent by the room strategy.In many places it seems you can have 6-8 unrelated individuals in a home.Is anybody maximizing these joint strategies by building out a quadplex with 6-8 bedrooms per home and then renting out per room?

I previously had a bank that would not lend to my LLC and required that an individual be the lendee.

In both scenarios, you are dealing with individual franchisee/business owner, so it's as important to focus on that person as it is the brand and the use. 

The loan has been approved and requires a 20% downpayment which we are obtaining from individuals that aren't members of the LLC.

This could be an attorney, individual, or other business entity that can receive legal correspondence and other state documents.