That would depend on local bylaws , travel a mile down the road from where I used to live in England and you needed planning permission for anything bigger than a 6x6 wooden shed .. where I live now in NI you can build a garage without planning permission or building control involved as long as it doesn’t cover a certain m2 and it’s no closer than 3 metres to any main drain/sewage pipes
bout a 1/4 saluki in this fella , and there’s none of the saluki traits you hear of.. though he as a very light frame and can run non stop , never been tested as I just dander the fields with him ,