Step between accommodation and basement car park area.

[nearlythere]

I would love to have a garage for my cars. What I do have is a large storage building which, strangely enough, is about the size of two cars side by side with still have about 2M clearance around the sides. It has two wide roller shutter doors on the front I suppose for taking in large storage items.
Was thinking I might build a double garage beside it.