I have been trying to recall the title & author of a juvenile science fiction novel I borrowed from my public library in the early 80s.
The protagonist had or wanted a backpack flying wings and houses were equipped with some kind of anti-gravity tech and people could move anywhere.
The closest I found was Bob Shaw’s Vertigo but can’t find even an excerpt to verify the floating homes or describe the wings to see if it stirs memories. It was also "juvenile", as I was in 6th or 7th grade (11-13 years old). I know I read Anderson’s Shield around this same time.
I had thought it was Andre Norton, but I might be mixing recall of novels. Norton had been the author of a story of a young man that traveled between dimensions to a world that seemed in ruins, in winter, and there had been a large animal stalking him.