Also keep in mind that many of these vacation locations have began changing enforcement and regulations for STRs so make sure to research a lot about pending legal actions and public sentiment of STRs in any market you want to enter and formulate several exit strategies to protect yourself in case there is a shift in the market there.

If you can add a legal ADU at $25k in the Austin area then you should add it.  

If youre wanting to make a cash offer, all I can say is that Ive never seen a competent seller/listing agent accept a cash offer without proof of funds, meaning a bank statement or similar document(s) showing liquid cash for closing.

But now you have a challenge of documenting both your time AND time of everybody else involved with the property.Now, to answer your question - is it possible from out of state?

Consider Hiring a Legal Expert- German property law can be complex.

As you alluded to, sometimes a passive note investment purchased for monthly payments “goes south”, and becomes an active participation investment, with plenty of additional capital required for legal fees, forced place insurance, and property taxes.  

Do not rely on it for legal advice.

You get to use any methods legally allowed to create losses. 

We buy at a discount and pledge our legal right to collect the debt (a collateral assignment agreement) as the collateral for the private capital loan we take out, which is backed by the value of the real estate securing the 1st loan.  

Negligence is only a cause of action when there is a legal duty owed.