An activity is a personal service activity if it involves the performance of personal services in the fields of health (including veterinary services), law, engineering, architecture, accounting, actuarial science, performing arts, consulting, or any other trade or business in which capital isn’t a material income-producing factor.7.

I have had it an unusually long time due to anything that could go wrong did...bad weather, bad GC and back and forth getting the engineer plans through since it is a FEMA zone home.

To make extra sure it appraises high enough for the refinance, this would be after I talk to an inspector and get a few GCs to bid the job, might also get a structural engineer to come up with a repair plan for the GCs to look at when getting me bids.

In Reno, NV the Tesla factory and building of the Tesla Semi-truck factory has been bringing more, construction, executives and engineers to the area for 1-8 weeks. 

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?

You should engage an architect or surveyor/civil engineer for something like this.

Having a robust system in place to vet tenants for the right fit is key to long term success. 

You will have to talk to your Local MLS, they should have a feed that you can provide to your database engineer, pretty much the same way Zillow gets all the MLS data. 

They are more sales than solutions IMO.Also be careful regarding the "structural engineer".

For example, a doctor or software engineer, who makes good money, but does not understand real estate nor finance.