Taking over a mortgage??

[Anna VW]

Hi everyone!

This is my first post :) I am considering (if it's possible of course) taking over my brother's mortgage when he finds a bigger home for him and his growing family in the coming year.
I apologize in advance if I sound like a newbie, but is this possible only with certain types of mortgages? I have Excellent credit and ample funds in case of repairs etc.Also the home is in a very good area (close to schools about 1500 sq ft 3 bed 2 bath)

 Also my brother and father are contractors so that always helps for future maintenance.

I thought without paying any realty/ closing fee's this could be a great and profitable way to get my first single family rental going.
Any advice/ guidance would be appreciated!

Thanks!!