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

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. 

Either way it would be a grey area, selling a house with a different amount of units/bedroom/bathroom seems extreme though. its an auction site, I have seen auction sites miss the fact there was additional lots in a sale.

A common bit of advice seen on this site is, "Don't spend $20K on a mentoring program when you could spend that money on your first deal and you'll learn much more."

is there a tool on this site? 

Please consult your trusted professional in getting accurate information as it relates to the estate.This site has 1031 intermediaries that have far more expertise than I have about 1031 but 1) you cannot 1031 a pure OO property.  

I cannot find any reviews on BP or other sites.

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 $$$.

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?

100% worth it to post on Furnished Finder, but you need to make sure that you understand it is not a booking site.