Building a RV garage input needed. Pictures helpful

make the building as big as you can and i would put 2 doors , built mine before we had a camper we are on our 4th camper and none of them have fit in the building :( , my building is 40x60 and not big enough . that being said good luck and finish it on the inside like you want because if you wait and do it after you move into it makes it hard do after it's full of stuff