However, I don't use the existing garage for a car, and wouldn't use the new one for that either. The current garage is insulated and lined and used as a workshop and I would do the same with the new one.
Though I don't need access for a car it would be handy to have a largish door from the drive to the new garage for moving sizeable items in an out - the current garage still has its double doors, with removable lining panels inside.
If I just build a single front door say 1.5m wide, will the building still be regarded as a garage? The floor will be well below the house floor level, there will be a fire-resistant internal connecting door and so on, but would the garage be classed as habitable and part of the extension? And would it actually make all that much difference if it was? Is there actually a statutary requirement to have a garage?
I've looked for the answer to this online and not turned up anything that seems relevant. But if it is out there somewhere I'd appreciate a pointer in the right direction. Many thanks.