I have heard developing an rv park one should budget $30k per space, which seems high to me but, all the 50 amp underground power, waste plumbing, possible lift stations, pads for rv's concrete use areas, pavement, landscaping, engineering, surveys, sitework etc, maybe?

Blocking unknown numbers, email junk folder, etc, takes care of another 25%.  

Quote from @Rob Block: Quote from @Greg Scott: I'm not familiar with these deals, but would be very careful when looking at historical results.  

If you can concretly tie increased usage to that unit, I would give a notice that rent is increasing due to excessive use.

The onsite-manager’s unit had a concrete floor which sometimes got wet from water coming over the sill in big storms.

I'm exploring all options at this point including finishing the home with other builders, as well as selling what has been built (slab and block walls of a single family home 4 bed 3 bath) to another builder or investor.Does anyone have any recommendations on where to look for potential buyers for something like this?

My first road block is getting financing with decent rates.

Looks like a bunch of concrete rubble or something.

I sold a beachfront home last year that was ICF constructed in 2000 with a metal roof on concrete pilings and the insurance went up triple what my larger 2019 stick built with shingle roof 6 lots down is. 

I usually fill out the form like this:1) All open and closed permits on (property address) (lot) (block)Let me know if this helps!