You will have to coordinate with the host when you want to access the space.
Crawl space as big as entire house, sub pump with perimeter drain installed as well as 6”-8” of concrete for flooring. Some moisture does still occur but very little, as long stuff is put on pallets will all be perfectly well kept. Separate entrance in rear of house with light on switch and outlets. Only suggesting to keep things off the floor just to be safe.