In order to prepare for disclosure deadlines and detect potential deal roadblocks, the seller may carry out "reverse diligence" on the buyer.Finally, it's crucial to comprehend the motivation behind the trade.

@Chris Heinmiller you can export a list of recent (i.e. 18 months) land trades from Redfin, but you do have to separate the apples from the orange and the bananas, but in an area that is somewhat homogenous, you'll usually be able to see a trend, i.e. you might have two low ones at 20-30k per lot, and one or two high ones at 175k-200k/lot, but then you'll see six or seven trades in the 55-65k range, and then you've figured it out. 

We keep a very accurate spreadsheet of STR eligible properties from Brookings through Astoria to help us and our investor clients navigate and focus their search on listings that are both eligible for a permit and forecast lucratively as a AirBnB rental (our current list hosts roughly 100+ on and off market STR's for sale.)Due to the very limited housing inventory, properties that meet client(s) search criteria and budget can boil down to a handful of active listings along the entire coast.

What made my investor interested in this deal was being a corner property you are able to build a full 3rd story addition by right which would massively increase the value of the property with similar 3 story properties trading in the low 600k's.

Don't listen to anyone you aren't willing to trade places with.

And if you find something that does, there are likely trade-offs.

Cleaning is not an easy trade to do prooerly.

FTC Suit Leads to $16.7 Million Judgment Against Principals and Celebrity Endorsers of Real Estate Investment Training Program | Federal Trade Commission 

If your looking to learn the trade and want to find a mentor to guide you, the I would suggest visiting one of the local REI clubs in Spokane or Couer D'Alene.

Only way I think you could get the info would be to see if you can forecast the work needed to be done based on the inspection and work out the total cost to the HOA.