I think my questions was not clear let me clarify

1-If S-Corp pays rent to owner for building, the owner should file Sch E even he is a shareholder-employee? 

2- next question, When shareholder-employee uses home-office expenses, based on accountable plan he/she should file 8829 monthly and find out mortgage interest and real estate tax for each month that I mentioned in my previous post which hard to find numbers for each month specially for mortgage interest and reduce Sch A for those above items. am I right till now?