What are things to consider in house hacking.

[Kal Wol]

Hello awesome BPs.

I in the process of planning to rent the rooms of the townhouse, 3BR 2.5Bath with basement. This is in montgomery MD. I wanted to know if there are any legal things I need to know regarding how many people can be rented out in the house? The basement is a walkout and based on what I gathered if it has an external exit, this one doesn't have a window just door, it shall be treated as bedroom provided I provide a closet. I am also thinking to rent the basement.

Also, anything to be aware of regarding the common area sharing, in this case laundry and kitchen? I am just asking to see for anything that I should be looking for from the legal, insurance and some other angle that I should be aware before i jump into it with the assumption someone has already gone with this and have some insight. 

As always, thanks in advance.