The escrow company and attorney I work with have seen this exercised 1 time in 30 years. 

You can google "debt collection" or "debt buyers" to find companies who do this.In general, be prepared to collect pennies on each dollar of debt owed to you.

Does your company offer any HELOC products for primary residence/house being hacked property?

Those companies are similar to Airbnb in the sense that individuals working with them is at their pleasure, availing chattel property for commercial purposes.

Good advice, thank you.I switched my MI property over to your PM company. 

Doesn't work that way.When you start getting into larger buildings that have been run by property management companies historical data becomes more important and a bigger predictor of future performance.

Any suggestions on insurance companies that specialize in Homeowner Insurance for investors that have a part-time vacation home that also serves as a rental property?

then you really don't have a problem...except that you are forced to switch horses in mid-stream which I know is not desirable....A new GC will not always charge so much more to take over a job mid-stream, it just depends on a lot of things (like the original GCs reputation).I would get a release (of sorts) stating that the original GC will warranty the work that he has completed and that the new GC is not liable for any work not performed by his company.

Several Property Management companies are around the area with teams available from management to repairs.

Both my management company and the homeowner were sued.