A leanto is like a shed but it leans against the house. you can park a car in a leanto. and finally, an external car port is a garage/shed that is separate from the house � external building. Despite these differences losing their significance, one major difference yet persists. this difference between a shed and a garage is in terms of size. it is still true that a garage is larger than the largest shed. usually, sheds are below 199 square feet in area as well as need a site permit.. Budget wise a big shed will cost you around
