I'm exploring potential opportunities in short-term rentals (STR) in West Virginia, with a particular focus on glamping. As I'm new to this domain, I would to hire a consultant to perform some zoning and other due dil...

Vacation rental owners should be on all four listing sites.

@Sue Duvall I suggest you go to a site for the residential assisted living academy in Phoenix.

They list properties on their own site, plus Airbnb, VRBO, Booking.com.

I've consistently written about the forces of nature and her current and future effects on the real estate market (even while often being ridiculed and politicized on this very site for it) regardless: I personally moved and invested in coastal Oregon in 2018 from Venice Beach Los Angeles partly as a result of the trajectory of climate and have assisted several clients that specifically purchased on the Oregon Coast for their own 'climate havens,' investment and future retirement homes. 

This is not yoursituation, but just to walk through the different thought processesin Holding/Selling that a friend of mine is going through.Helped my friend getinto the Self Storage business and walked him through the wholeprocess from evaluating the market, selecting a site, developing thesite, systems, financing, insurance, etc.

See what the $19k was for first, it may have been neccessary, but still that does not make it ok for them to do it without a signed CO.You can ask an attorney a few questions using sites like Avvo or Rocket for not much $$$.

I have a mix of MTRs, STRs, and a room rental and I can perform all the needed property management and bookkeeping features on the site. 

Does this mean the realtor does not have exclusive rights to sell the property and the owner is probably advertising the same property on one of those by owner sites?

They had proffers up there but things you would not be taught - when you have a project site you have to use police officers and not flagman.