But have you ever considered how beneficial they can be as a tax strategy for estate planning?

Because tax and logistical benefits are so different. 

However, since you already filed 2021 and 2022, the adjustment will be happening on your 2023 taxes.

(lower PITI) Get cheaper property taxes - argue with county with a Property Assessment Appeal that your home is worth less than what they appraised it for, thus lowering your property tax burden (portion of your mortgage payment)4. 

Many won't care about the law and will volunteer to help you for a fee. 2) Hire a real estate agent.But then who will handle the application process and screening?

A rental pays no self employment tax. 

I know it is logical to think you could deduct half of the shared common space, but unfortunately the tax law wasn't written to allow that.  

It will take me 2.5 years to recoup the cost without taking into account tax benefits.

No W-2s, pay stubs, or tax returns are required. 90% of underwriting is based on the property not the borrower.   

I can also share the local contacts I have made in the past decade for all the services you will need if you decide to pull the trigger ie: Notary, CPA, Real Estate law firms, photographers, property managers, financing, developers, etc.