Apart from HOA fees, property taxes, any other fees for day to day basis?.

Do your normal analysis and inspections.  

Normal wear and tear for that type of flooring.  

You can lower your cost basis by renting out other parts of your house/building.

Having touch up paint is pretty normal for houses or small multi.

Normally I leave 3 business days gap at minimum to allow for carpet cleaning/minor fixes.3.

Given that what do you think i could expect to spend even on a cost per sq ft basis to rehab this project? 

Student Rentals don't work too much different than a normal house with roommates. 

@Justin SummersIf your total gain on the property is $500k, and you're married, normally you can exclude $500k. ($250k for single folks).Unfortunately, by moving back in your former house you screwed up your exclusion, instead of stopping the clock.

Does it sound normal?