My 26DBH is almost 32' long tongue to bumper rack. Probably over that with the spare tire.
When I built a storage cover for it, I worked my way up from a 12'x30' carport to what I have now. I believe in overkill, if you know what I mean.
I built a 30'x50'x14'H fully enclosed metal building on a 6" slab. I have all idea I will eventually end up with a 5er, so, it's got a 14' high rollup door in the front.
I paid more for the building to store my camper in than I did for my camper!!

But I also use it as equipment storage for tractors and other toys too