Totally respect the collective experience here, but if this is what you want to do and succeed at, you will be out of luck exploring here.

As municipalities expand, then contract, then expand, and so on... equity will grow at similar rates respectively.

In your case, you would allocate expenses, such as mortgage interest and property taxes, based on your respective ownership shares (50% for you, 25% each for your mom and brother).Given that the property is an investment for you, you can report your share of rental income and deductions on your tax return.

Thanks for sharing @Anton IvanovI have great respect for people with passion, goals and "right" mindset.Your post demonstrate perfectly what can one achieve even with many unknown variables (remote markets, using teams over self-work).I have much to learn and your post gave some great ideas and especially ambition to pursue my REI goals.Have a great day,Benny

Welcome Andy, I respect the hustle! 

A cost segregation study is a strategic tax planning tool that separates the assets that have a shorter useful life and can be depreciated over 5, 7 and 15 years from the residential rental property or nonresidential real property that are depreciated over 27.5 and 39 years, respectively.

I'm not extremely well-versed in STR investments, but the respective markets seem odd for implementing the strategy.

I imagine you've already invested internationally if you want to do something like this, in which case you know it's different than in the US in many respects. 

Pretty respectable source’s research “found that short-term rentals are not the biggest contributor to high rents, especially when it comes to the most vulnerable segments of a city’s residents.”https://hbr.org/2024/02/what-does-banning-short-term-rentals...

Such a simple thing, that creates respect for self, others and the community.