@Zoran Domazet & @Will Barnard - not an expert, but being in Florida (where sink holes are frequent) and seeing "polyurethane to fill a void" (polyurethane being an expanding foam with little load bearing capability) makes me thing that we are not taking about a small crack in the floors/walls due to foundation settling, but something more vicious.

In Seattle, for example, we are seeing brick and mortar restaurants closing down on a more frequent basis then in the past.

I too live in SoCal, but frequent Mammoth and I'm in early stages of investing in the Mammoth market. 

Could advertise in publications/locations that they frequent. 

It has one of the most frequently climbed mountains called Monadnock, a college close by, and a couple large companies.

You should also be prepared should your primary lender fall through in underwriting because it happens far more frequently than people think.

If you have other investment properties you can frequently collateralize those properties as well. 

Do this for as many listings as you can in your immediate area to see how frequently they are booked.

I’ve now done 33 deals, a handful of which a frequently-deployed military husband has never seen.

@Kalen JordanYou're asking a great question, unfortunately where you're asking it is kinda like a vacuum.