I've personally done just about every rehab scenario, properties I've lived in, properties bought as investments and even properties bought at auction.You've gotten good advice from folks on this list.

I have personally wanted to build my home on this land for 10 years, as I've always been interested in this.Issue is, I've never done any work with residential development, only smaller land development, about 13 acres, and commercial, all on my own.With the residential development, I'm trying to get a sense of anyone in the space currently and what some ballpark costs might be for infrastructure and how that all works.

If the RV is not permanently affixed and retains mobility, it is considered personal property and depreciated over 5 years under the Modified Accelerated Cost Recovery System (MACRS).

The biggest mistake I see out of state investors make is relying on others too much for direction and guidance instead of doing their own due diligence and building their own team that they actually meet and interviewRelying on one person who alleges that they have a 'team' built already that you can use as well can be a costly mistake.

Is there any benefit to visiting DoH offices in person? 

It's a matter of finding the one where the weaknesses are in areas that aren't relevant to your needs and/or don't aggravate your personal pet peeves. 

As per their terms of use, "The Site is provided solely for your personal noncommercial use."

I highly recommend going to meetups and talking to investors in person. 

Other CPAs and firms have quoted me 5k-10k+ but are no where near as responsive and personable as my current CPA and accountant.

If you're looking for a more landlord-friendly market, I personally recommend Columbus OH.