It's a detached house, so there is a good option for access to the garden from the other side of the house. But for Option 3 I was thinking that it would require replacing the flat roof of the garage with a new one (potentially pitched) to accommodate the new width. But that could be pricey...
I just put an offer that was accepted on a house that has a narrow and long garage attached to the house. As I would like to be able to park my car inside the garage, I am looking for the most affordable way to make changes to the existing structure (see photos below). I am based in the North...