The specifics usually depend on agreements with the tribal government.

To whom this may concern, I am an investor looking to buy my second property.

This is a bad practice for STRs and even worse for MTRs.

Yes, you still do online shopping and coordination and so on, but hitting 500 hours in this case becomes far more challenging.

That's an average of 17% annually over that time.The City of Detroit has not only outperformed every city in the Metro Detroit area, its outperformed every city in the USA from 2014-2024:Let that sink in for a minute ... you'll probably need more time than that to process this!

There are about 20 companies that do this and more or less take over as the primary lien holder in place of the taxing authority. 

This can be a good strategy; I say this with one large caveat. 

I've got about $525K in equity in the property, but lenders have told me that I cannot get a HELOC to access that equity for additional purchases because the duplex was financed as an investment - they have said TX law dictates that HELOC can only be used on primary residences.

you could ask lender for more time or also file bankruptcy.

Given you also have a management company to do books for I would suggest the more expensive option of getting a management software that has accounting capabilities so that all you would have to keep track of on a spreadsheet is the management company.