Send via certified mail.As for your post-mortem, assuming the money is gone and it is not worth your time and effort to keep fighting for it, I personally am pretty biased against crowdfunding sites like SmallChange, CrowdStreet, and others.  

Facebook marketplace may be a bit more work butdefinitely worth exploring and looking up reviews for different brands peopleare selling.

The marketplace is always evolving, so may eventually see more listings where sellers only set their listing agent commission for marketing the property and negotiating on their behalf, and not offer any buyer agency fee up front, and just settle on that in the Offer the buyer agent brings them.

#3: I believe he has it on FB Marketplace, we have had one open house (with no one stopping by).

Goal: To establish trust, recognition, and familiarity in the marketplace.

So maybe just publicize it on FB market place 

Additionally, there is usually a document in the loan doc set that has you certifying that no family members would be occupying the subject property. 

In addition to real estate, I’m an entrepreneur and proud owner of several online businesses.Beyond real estate, I’m a certified jeweler, having graduated from GIA, and I’m also a certified Day Trader and FL Housing-certified for affordable housing programs.

When he applied for the garage permit he included this statement to the city certifying that the coach house was neither commercial or residential and only used for storage. 

CRS is certified residential specialist and it’s the highest designation a residential agent can get.