W2 employee using STR for tax deduction

[Akarsh]

Leverage, the STR tax deduction through cost segregation. Do I need to own the property fully? Can I win the property 50% with the partner?

If I can, own partly), does that mean that I also only get 50% off the deduction from the cost segregation?

I buy the property in October do I only need to show 750 hours Prorated for three months in the year to leverage, the benefit?

[RobertB4444]

So I am assuming that you are trying to own a property 50% with a partner (which of course you can) and you want to use it as a short term rental and you want to be treated as a real estate professional for 2023 even though you only had the property for the final three months of the year.

Yes, if you split the property with a partner you would put 50% of the income and expenses on your return and they would do the same on theirs.

There is no mechanism to prorate the 750 hours.  But if you're a real estate professional then you are.  

@Akarsh