With my purchase and sale agreement if that ever happens and can sue the seller for not performing, prevent the sale to someone else, and get money for specific performance and/or damages."

If for example there were signs of root infiltration through a joint or something, I would consider taking an action, BUT that might not mean replacing the line. 

The key occupancy requirement for FHA loans is at the time of the original purchase—usually requiring you to live in the home for at least a year.If you've met the initial FHA loan requirement of living in the property for 12 months (which you would have by November 2024), you're typically free to move out and house-hack again, even if you choose the FHA streamline option If your goal is to acquire another property in Q1 2025, refinancing via FHA streamline shouldn’t prevent that.

The IRS has strict rules preventing passive losses from offsetting active income unless you qualify as a Real Estate Professional (REP).

But log siding is absolutely not going to prevent any lender from financing a home. 

How do you prevent them from running up crazy purchases?

It requires a higher down payment and remote management, which can be harder without a strong team.House hacking with a VA loan is better for hands-on management; DSCR is great if you're ready to start from a distance.From a tax perspective, if you intend to qualify as REPS or have material participation in STR, being overseas will prevent that.

So, my question is using "involuntary conversion provisions" prevents you from doing partial disposition, recognizing a loss for remaining depreciation on the old roof, and depreciating the new roof?

(Perhaps starting out with a little contrition and modesty would help prevent the zuckerberg effect.)Trying to automate property management via a start up/app/web/tech approach is laughable.

And most of the damages a guest will do can be covered by these str booking sites insurance.Your budget will prevent you from buying homes in some of these big cities or vacatation areas with tons of str's.