I guess to get a definite answer I'll have to cold call to get see if all these people are behind on their payment or it's just a standard practice behind some salesmen!

@Jonathan Greene @Jay Hinrichs @Nicholas L.Note: Each state has their own way of handling and regulating foreclosures, and as someone who is not specializing in foreclosures I can give you only general ideas and information. 

SFHs are largely exempt from many regulations such as rent control.

That doesn’t go unnoticed by regulators.

You didn't mention what kind of law you're practicing. 

Figure out how to actually analyze property and practice.

Bacon is more yummy than a Christmas tree, but I bet I'm going to have a whole lot less regulation growing Christmas trees... however, before we even get to that, it's necessary to know that the inquiry is even about bacon v Christmas trees, rather than Bacon v grapes. 

While the absolute value may not be high - I have a rehabbed duplex (can you say practically $0 repairs/maintenance/CapEx for the next 10-15 years since I rehabbed when I bought it?)

Your tenants obligation was to pay you on Jan 1, so it doesn't matter if they paid someone else they still owe you...obviously details re: notice and dates all come into play here and from a practical perspective I'd work with the tenant and not move to evict over this.

Seacoast NH, for example, has some great potential with short-term rental markets (Airbnb, VRBO), especially in towns like Portsmouth or Hampton, but the regulations can be a bit tricky.