Now, we haven't signed any official paperwork nor finished the walk-through yet,  I still keep his deposit, he move his stuffs out already, but he doesn't let me charge this month rent to this deposit. 

PM me and let me know the rest of your requirements.  

It depends on the density target and other factors that the zoning officials evaluate.

I would send them the official letter but also have a phone conversation.But seriously,  raise the rents before you renovate.

Option 2:The other thing I’ve heard is to give back 10% interest (or whatever interest rate agreed on) based on how much each person put in and then split the rest of the profit based on work put in/sweat equity, which in this case would be 50/50.

And he let me know that he will not be working for the rest of the week and why. 

Well keep an eye out for SFs with basements, garages, or even better detached garages, that you can live in and rent out the rest of the house.

We can create a "proforma" on the rest of the figures based on that data alone.

(I will use it sporadically the rest of the time).I have asked my agent to get a letter from HOA in reference to the timing of the increase.I am “reportedly” buying it from an elderly couple ,the house inspection was fine but still does not feel right..

I'm not too sure if you can serve 3 yrs active and then the rest reserves lmk.